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Think about something strange and unexplainable in your life. Maybe you get a headache right before it rains, or maybe you think your favorite sports team wins when you wear a certain color. If you wanted to see whether these are just coincidences or scientific fact, you would form a hypothesis, then create an experiment to see whether that hypothesis is true or not.

But what is a hypothesis, anyway? If you’re not sure about what a hypothesis is--or how to test for one!--you’re in the right place. This article will teach you everything you need to know about hypotheses, including: 

• Defining the term “hypothesis” 
• Providing hypothesis examples 
• Giving you tips for how to write your own hypothesis

So let’s get started!

What Is a Hypothesis?

Merriam Webster defines a hypothesis as “an assumption or concession made for the sake of argument.” In other words, a hypothesis is an educated guess . Scientists make a reasonable assumption--or a hypothesis--then design an experiment to test whether it’s true or not. Keep in mind that in science, a hypothesis should be testable. You have to be able to design an experiment that tests your hypothesis in order for it to be valid. 

As you could assume from that statement, it’s easy to make a bad hypothesis. But when you’re holding an experiment, it’s even more important that your guesses be good...after all, you’re spending time (and maybe money!) to figure out more about your observation. That’s why we refer to a hypothesis as an educated guess--good hypotheses are based on existing data and research to make them as sound as possible.

Hypotheses are one part of what’s called the scientific method .  Every (good) experiment or study is based in the scientific method. The scientific method gives order and structure to experiments and ensures that interference from scientists or outside influences does not skew the results. It’s important that you understand the concepts of the scientific method before holding your own experiment. Though it may vary among scientists, the scientific method is generally made up of six steps (in order):

• Observation
• Asking questions
• Forming a hypothesis
• Analyze the data
• Communicate your results

You’ll notice that the hypothesis comes pretty early on when conducting an experiment. That’s because experiments work best when they’re trying to answer one specific question. And you can’t conduct an experiment until you know what you’re trying to prove!

Independent and Dependent Variables 

After doing your research, you’re ready for another important step in forming your hypothesis: identifying variables. Variables are basically any factor that could influence the outcome of your experiment . Variables have to be measurable and related to the topic being studied.

There are two types of variables:  independent variables and dependent variables. I ndependent variables remain constant . For example, age is an independent variable; it will stay the same, and researchers can look at different ages to see if it has an effect on the dependent variable. 

Speaking of dependent variables... dependent variables are subject to the influence of the independent variable , meaning that they are not constant. Let’s say you want to test whether a person’s age affects how much sleep they need. In that case, the independent variable is age (like we mentioned above), and the dependent variable is how much sleep a person gets. 

Variables will be crucial in writing your hypothesis. You need to be able to identify which variable is which, as both the independent and dependent variables will be written into your hypothesis. For instance, in a study about exercise, the independent variable might be the speed at which the respondents walk for thirty minutes, and the dependent variable would be their heart rate. In your study and in your hypothesis, you’re trying to understand the relationship between the two variables.

Elements of a Good Hypothesis

The best hypotheses start by asking the right questions . For instance, if you’ve observed that the grass is greener when it rains twice a week, you could ask what kind of grass it is, what elevation it’s at, and if the grass across the street responds to rain in the same way. Any of these questions could become the backbone of experiments to test why the grass gets greener when it rains fairly frequently.

As you’re asking more questions about your first observation, make sure you’re also making more observations . If it doesn’t rain for two weeks and the grass still looks green, that’s an important observation that could influence your hypothesis. You'll continue observing all throughout your experiment, but until the hypothesis is finalized, every observation should be noted.

Finally, you should consult secondary research before writing your hypothesis . Secondary research is comprised of results found and published by other people. You can usually find this information online or at your library. Additionally, m ake sure the research you find is credible and related to your topic. If you’re studying the correlation between rain and grass growth, it would help you to research rain patterns over the past twenty years for your county, published by a local agricultural association. You should also research the types of grass common in your area, the type of grass in your lawn, and whether anyone else has conducted experiments about your hypothesis. Also be sure you’re checking the quality of your research . Research done by a middle school student about what minerals can be found in rainwater would be less useful than an article published by a local university.

Writing Your Hypothesis

Once you’ve considered all of the factors above, you’re ready to start writing your hypothesis. Hypotheses usually take a certain form when they’re written out in a research report.

When you boil down your hypothesis statement, you are writing down your best guess and not the question at hand . This means that your statement should be written as if it is fact already, even though you are simply testing it.

The reason for this is that, after you have completed your study, you'll either accept or reject your if-then or your null hypothesis. All hypothesis testing examples should be measurable and able to be confirmed or denied. You cannot confirm a question, only a statement! 

In fact, you come up with hypothesis examples all the time! For instance, when you guess on the outcome of a basketball game, you don’t say, “Will the Miami Heat beat the Boston Celtics?” but instead, “I think the Miami Heat will beat the Boston Celtics.” You state it as if it is already true, even if it turns out you’re wrong. You do the same thing when writing your hypothesis.

Additionally, keep in mind that hypotheses can range from very specific to very broad.  These hypotheses can be specific, but if your hypothesis testing examples involve a broad range of causes and effects, your hypothesis can also be broad.  

The Two Types of Hypotheses

Now that you understand what goes into a hypothesis, it’s time to look more closely at the two most common types of hypothesis: the if-then hypothesis and the null hypothesis.

#1: If-Then Hypotheses

First of all, if-then hypotheses typically follow this formula:

If ____ happens, then ____ will happen.

The goal of this type of hypothesis is to test the causal relationship between the independent and dependent variable. It’s fairly simple, and each hypothesis can vary in how detailed it can be. We create if-then hypotheses all the time with our daily predictions. Here are some examples of hypotheses that use an if-then structure from daily life: 

• If I get enough sleep, I’ll be able to get more work done tomorrow.
• If the bus is on time, I can make it to my friend’s birthday party. 
• If I study every night this week, I’ll get a better grade on my exam. 

In each of these situations, you’re making a guess on how an independent variable (sleep, time, or studying) will affect a dependent variable (the amount of work you can do, making it to a party on time, or getting better grades). 

You may still be asking, “What is an example of a hypothesis used in scientific research?” Take one of the hypothesis examples from a real-world study on whether using technology before bed affects children’s sleep patterns. The hypothesis read s:

“We hypothesized that increased hours of tablet- and phone-based screen time at bedtime would be inversely correlated with sleep quality and child attention.”

It might not look like it, but this is an if-then statement. The researchers basically said, “If children have more screen usage at bedtime, then their quality of sleep and attention will be worse.” The sleep quality and attention are the dependent variables and the screen usage is the independent variable. (Usually, the independent variable comes after the “if” and the dependent variable comes after the “then,” as it is the independent variable that affects the dependent variable.) This is an excellent example of how flexible hypothesis statements can be, as long as the general idea of “if-then” and the independent and dependent variables are present.

#2: Null Hypotheses

Your if-then hypothesis is not the only one needed to complete a successful experiment, however. You also need a null hypothesis to test it against. In its most basic form, the null hypothesis is the opposite of your if-then hypothesis . When you write your null hypothesis, you are writing a hypothesis that suggests that your guess is not true, and that the independent and dependent variables have no relationship .

One null hypothesis for the cell phone and sleep study from the last section might say: 

“If children have more screen usage at bedtime, their quality of sleep and attention will not be worse.” 

In this case, this is a null hypothesis because it’s asking the opposite of the original thesis! 

Conversely, if your if-then hypothesis suggests that your two variables have no relationship, then your null hypothesis would suggest that there is one. So, pretend that there is a study that is asking the question, “Does the amount of followers on Instagram influence how long people spend on the app?” The independent variable is the amount of followers, and the dependent variable is the time spent. But if you, as the researcher, don’t think there is a relationship between the number of followers and time spent, you might write an if-then hypothesis that reads:

“If people have many followers on Instagram, they will not spend more time on the app than people who have less.”

In this case, the if-then suggests there isn’t a relationship between the variables. In that case, one of the null hypothesis examples might say:

“If people have many followers on Instagram, they will spend more time on the app than people who have less.”

You then test both the if-then and the null hypothesis to gauge if there is a relationship between the variables, and if so, how much of a relationship. 

4 Tips to Write the Best Hypothesis

If you’re going to take the time to hold an experiment, whether in school or by yourself, you’re also going to want to take the time to make sure your hypothesis is a good one. The best hypotheses have four major elements in common: plausibility, defined concepts, observability, and general explanation.

#1: Plausibility

At first glance, this quality of a hypothesis might seem obvious. When your hypothesis is plausible, that means it’s possible given what we know about science and general common sense. However, improbable hypotheses are more common than you might think. 

Imagine you’re studying weight gain and television watching habits. If you hypothesize that people who watch more than  twenty hours of television a week will gain two hundred pounds or more over the course of a year, this might be improbable (though it’s potentially possible). Consequently, c ommon sense can tell us the results of the study before the study even begins.

Improbable hypotheses generally go against  science, as well. Take this hypothesis example: 

“If a person smokes one cigarette a day, then they will have lungs just as healthy as the average person’s.” 

This hypothesis is obviously untrue, as studies have shown again and again that cigarettes negatively affect lung health. You must be careful that your hypotheses do not reflect your own personal opinion more than they do scientifically-supported findings. This plausibility points to the necessity of research before the hypothesis is written to make sure that your hypothesis has not already been disproven.

#2: Defined Concepts

The more advanced you are in your studies, the more likely that the terms you’re using in your hypothesis are specific to a limited set of knowledge. One of the hypothesis testing examples might include the readability of printed text in newspapers, where you might use words like “kerning” and “x-height.” Unless your readers have a background in graphic design, it’s likely that they won’t know what you mean by these terms. Thus, it’s important to either write what they mean in the hypothesis itself or in the report before the hypothesis.

Here’s what we mean. Which of the following sentences makes more sense to the common person?

If the kerning is greater than average, more words will be read per minute.

If the space between letters is greater than average, more words will be read per minute.

For people reading your report that are not experts in typography, simply adding a few more words will be helpful in clarifying exactly what the experiment is all about. It’s always a good idea to make your research and findings as accessible as possible. 

Good hypotheses ensure that you can observe the results. 

#3: Observability

In order to measure the truth or falsity of your hypothesis, you must be able to see your variables and the way they interact. For instance, if your hypothesis is that the flight patterns of satellites affect the strength of certain television signals, yet you don’t have a telescope to view the satellites or a television to monitor the signal strength, you cannot properly observe your hypothesis and thus cannot continue your study.

Some variables may seem easy to observe, but if you do not have a system of measurement in place, you cannot observe your hypothesis properly. Here’s an example: if you’re experimenting on the effect of healthy food on overall happiness, but you don’t have a way to monitor and measure what “overall happiness” means, your results will not reflect the truth. Monitoring how often someone smiles for a whole day is not reasonably observable, but having the participants state how happy they feel on a scale of one to ten is more observable. 

In writing your hypothesis, always keep in mind how you'll execute the experiment.

#4: Generalizability 

Perhaps you’d like to study what color your best friend wears the most often by observing and documenting the colors she wears each day of the week. This might be fun information for her and you to know, but beyond you two, there aren’t many people who could benefit from this experiment. When you start an experiment, you should note how generalizable your findings may be if they are confirmed. Generalizability is basically how common a particular phenomenon is to other people’s everyday life.

Let’s say you’re asking a question about the health benefits of eating an apple for one day only, you need to realize that the experiment may be too specific to be helpful. It does not help to explain a phenomenon that many people experience. If you find yourself with too specific of a hypothesis, go back to asking the big question: what is it that you want to know, and what do you think will happen between your two variables?

Hypothesis Testing Examples

We know it can be hard to write a good hypothesis unless you’ve seen some good hypothesis examples. We’ve included four hypothesis examples based on some made-up experiments. Use these as templates or launch pads for coming up with your own hypotheses.

Experiment #1: Students Studying Outside (Writing a Hypothesis)

You are a student at PrepScholar University. When you walk around campus, you notice that, when the temperature is above 60 degrees, more students study in the quad. You want to know when your fellow students are more likely to study outside. With this information, how do you make the best hypothesis possible?

You must remember to make additional observations and do secondary research before writing your hypothesis. In doing so, you notice that no one studies outside when it’s 75 degrees and raining, so this should be included in your experiment. Also, studies done on the topic beforehand suggested that students are more likely to study in temperatures less than 85 degrees. With this in mind, you feel confident that you can identify your variables and write your hypotheses:

If-then: “If the temperature in Fahrenheit is less than 60 degrees, significantly fewer students will study outside.”

Null: “If the temperature in Fahrenheit is less than 60 degrees, the same number of students will study outside as when it is more than 60 degrees.”

These hypotheses are plausible, as the temperatures are reasonably within the bounds of what is possible. The number of people in the quad is also easily observable. It is also not a phenomenon specific to only one person or at one time, but instead can explain a phenomenon for a broader group of people.

To complete this experiment, you pick the month of October to observe the quad. Every day (except on the days where it’s raining)from 3 to 4 PM, when most classes have released for the day, you observe how many people are on the quad. You measure how many people come  and how many leave. You also write down the temperature on the hour. 

After writing down all of your observations and putting them on a graph, you find that the most students study on the quad when it is 70 degrees outside, and that the number of students drops a lot once the temperature reaches 60 degrees or below. In this case, your research report would state that you accept or “failed to reject” your first hypothesis with your findings.

Experiment #2: The Cupcake Store (Forming a Simple Experiment)

Let’s say that you work at a bakery. You specialize in cupcakes, and you make only two colors of frosting: yellow and purple. You want to know what kind of customers are more likely to buy what kind of cupcake, so you set up an experiment. Your independent variable is the customer’s gender, and the dependent variable is the color of the frosting. What is an example of a hypothesis that might answer the question of this study?

Here’s what your hypotheses might look like: 

If-then: “If customers’ gender is female, then they will buy more yellow cupcakes than purple cupcakes.”

Null: “If customers’ gender is female, then they will be just as likely to buy purple cupcakes as yellow cupcakes.”

This is a pretty simple experiment! It passes the test of plausibility (there could easily be a difference), defined concepts (there’s nothing complicated about cupcakes!), observability (both color and gender can be easily observed), and general explanation ( this would potentially help you make better business decisions ).

Experiment #3: Backyard Bird Feeders (Integrating Multiple Variables and Rejecting the If-Then Hypothesis)

While watching your backyard bird feeder, you realized that different birds come on the days when you change the types of seeds. You decide that you want to see more cardinals in your backyard, so you decide to see what type of food they like the best and set up an experiment. 

However, one morning, you notice that, while some cardinals are present, blue jays are eating out of your backyard feeder filled with millet. You decide that, of all of the other birds, you would like to see the blue jays the least. This means you'll have more than one variable in your hypothesis. Your new hypotheses might look like this: 

If-then: “If sunflower seeds are placed in the bird feeders, then more cardinals will come than blue jays. If millet is placed in the bird feeders, then more blue jays will come than cardinals.”

Null: “If either sunflower seeds or millet are placed in the bird, equal numbers of cardinals and blue jays will come.”

Through simple observation, you actually find that cardinals come as often as blue jays when sunflower seeds or millet is in the bird feeder. In this case, you would reject your “if-then” hypothesis and “fail to reject” your null hypothesis . You cannot accept your first hypothesis, because it’s clearly not true. Instead you found that there was actually no relation between your different variables. Consequently, you would need to run more experiments with different variables to see if the new variables impact the results.

Experiment #4: In-Class Survey (Including an Alternative Hypothesis)

You’re about to give a speech in one of your classes about the importance of paying attention. You want to take this opportunity to test a hypothesis you’ve had for a while: 

If-then: If students sit in the first two rows of the classroom, then they will listen better than students who do not.

Null: If students sit in the first two rows of the classroom, then they will not listen better or worse than students who do not.

You give your speech and then ask your teacher if you can hand out a short survey to the class. On the survey, you’ve included questions about some of the topics you talked about. When you get back the results, you’re surprised to see that not only do the students in the first two rows not pay better attention, but they also scored worse than students in other parts of the classroom! Here, both your if-then and your null hypotheses are not representative of your findings. What do you do?

This is when you reject both your if-then and null hypotheses and instead create an alternative hypothesis . This type of hypothesis is used in the rare circumstance that neither of your hypotheses is able to capture your findings . Now you can use what you’ve learned to draft new hypotheses and test again! 

Key Takeaways: Hypothesis Writing

The more comfortable you become with writing hypotheses, the better they will become. The structure of hypotheses is flexible and may need to be changed depending on what topic you are studying. The most important thing to remember is the purpose of your hypothesis and the difference between the if-then and the null . From there, in forming your hypothesis, you should constantly be asking questions, making observations, doing secondary research, and considering your variables. After you have written your hypothesis, be sure to edit it so that it is plausible, clearly defined, observable, and helpful in explaining a general phenomenon.

Writing a hypothesis is something that everyone, from elementary school children competing in a science fair to professional scientists in a lab, needs to know how to do. Hypotheses are vital in experiments and in properly executing the scientific method . When done correctly, hypotheses will set up your studies for success and help you to understand the world a little better, one experiment at a time.

What’s Next?

If you’re studying for the science portion of the ACT, there’s definitely a lot you need to know. We’ve got the tools to help, though! Start by checking out our ultimate study guide for the ACT Science subject test. Once you read through that, be sure to download our recommended ACT Science practice tests , since they’re one of the most foolproof ways to improve your score. (And don’t forget to check out our expert guide book , too.)

If you love science and want to major in a scientific field, you should start preparing in high school . Here are the science classes you should take to set yourself up for success.

If you’re trying to think of science experiments you can do for class (or for a science fair!), here’s a list of 37 awesome science experiments you can do at home

Ashley Sufflé Robinson has a Ph.D. in 19th Century English Literature. As a content writer for PrepScholar, Ashley is passionate about giving college-bound students the in-depth information they need to get into the school of their dreams.

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• How to Write a Strong Hypothesis | Guide & Examples

How to Write a Strong Hypothesis | Guide & Examples

Published on 6 May 2022 by Shona McCombes .

A hypothesis is a statement that can be tested by scientific research. If you want to test a relationship between two or more variables, you need to write hypotheses before you start your experiment or data collection.

Table of contents

What is a hypothesis, developing a hypothesis (with example), hypothesis examples, frequently asked questions about writing hypotheses.

A hypothesis states your predictions about what your research will find. It is a tentative answer to your research question that has not yet been tested. For some research projects, you might have to write several hypotheses that address different aspects of your research question.

A hypothesis is not just a guess – it should be based on existing theories and knowledge. It also has to be testable, which means you can support or refute it through scientific research methods (such as experiments, observations, and statistical analysis of data).

Variables in hypotheses

Hypotheses propose a relationship between two or more variables . An independent variable is something the researcher changes or controls. A dependent variable is something the researcher observes and measures.

In this example, the independent variable is exposure to the sun – the assumed cause . The dependent variable is the level of happiness – the assumed effect .

Prevent plagiarism, run a free check.

Step 1: ask a question.

Writing a hypothesis begins with a research question that you want to answer. The question should be focused, specific, and researchable within the constraints of your project.

Step 2: Do some preliminary research

Your initial answer to the question should be based on what is already known about the topic. Look for theories and previous studies to help you form educated assumptions about what your research will find.

At this stage, you might construct a conceptual framework to identify which variables you will study and what you think the relationships are between them. Sometimes, you’ll have to operationalise more complex constructs.

Step 3: Formulate your hypothesis

Now you should have some idea of what you expect to find. Write your initial answer to the question in a clear, concise sentence.

Step 4: Refine your hypothesis

You need to make sure your hypothesis is specific and testable. There are various ways of phrasing a hypothesis, but all the terms you use should have clear definitions, and the hypothesis should contain:

• The relevant variables
• The specific group being studied
• The predicted outcome of the experiment or analysis

Step 5: Phrase your hypothesis in three ways

To identify the variables, you can write a simple prediction in if … then form. The first part of the sentence states the independent variable and the second part states the dependent variable.

In academic research, hypotheses are more commonly phrased in terms of correlations or effects, where you directly state the predicted relationship between variables.

If you are comparing two groups, the hypothesis can state what difference you expect to find between them.

Step 6. Write a null hypothesis

If your research involves statistical hypothesis testing , you will also have to write a null hypothesis. The null hypothesis is the default position that there is no association between the variables. The null hypothesis is written as H 0 , while the alternative hypothesis is H 1 or H a .

Hypothesis testing is a formal procedure for investigating our ideas about the world using statistics. It is used by scientists to test specific predictions, called hypotheses , by calculating how likely it is that a pattern or relationship between variables could have arisen by chance.

A hypothesis is not just a guess. It should be based on existing theories and knowledge. It also has to be testable, which means you can support or refute it through scientific research methods (such as experiments, observations, and statistical analysis of data).

A research hypothesis is your proposed answer to your research question. The research hypothesis usually includes an explanation (‘ x affects y because …’).

A statistical hypothesis, on the other hand, is a mathematical statement about a population parameter. Statistical hypotheses always come in pairs: the null and alternative hypotheses. In a well-designed study , the statistical hypotheses correspond logically to the research hypothesis.

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Home » What is a Hypothesis – Types, Examples and Writing Guide

What is a Hypothesis – Types, Examples and Writing Guide

Table of Contents

Definition:

Hypothesis is an educated guess or proposed explanation for a phenomenon, based on some initial observations or data. It is a tentative statement that can be tested and potentially proven or disproven through further investigation and experimentation.

Hypothesis is often used in scientific research to guide the design of experiments and the collection and analysis of data. It is an essential element of the scientific method, as it allows researchers to make predictions about the outcome of their experiments and to test those predictions to determine their accuracy.

Types of Hypothesis

Types of Hypothesis are as follows:

Research Hypothesis

A research hypothesis is a statement that predicts a relationship between variables. It is usually formulated as a specific statement that can be tested through research, and it is often used in scientific research to guide the design of experiments.

Null Hypothesis

The null hypothesis is a statement that assumes there is no significant difference or relationship between variables. It is often used as a starting point for testing the research hypothesis, and if the results of the study reject the null hypothesis, it suggests that there is a significant difference or relationship between variables.

Alternative Hypothesis

An alternative hypothesis is a statement that assumes there is a significant difference or relationship between variables. It is often used as an alternative to the null hypothesis and is tested against the null hypothesis to determine which statement is more accurate.

Directional Hypothesis

A directional hypothesis is a statement that predicts the direction of the relationship between variables. For example, a researcher might predict that increasing the amount of exercise will result in a decrease in body weight.

Non-directional Hypothesis

A non-directional hypothesis is a statement that predicts the relationship between variables but does not specify the direction. For example, a researcher might predict that there is a relationship between the amount of exercise and body weight, but they do not specify whether increasing or decreasing exercise will affect body weight.

Statistical Hypothesis

A statistical hypothesis is a statement that assumes a particular statistical model or distribution for the data. It is often used in statistical analysis to test the significance of a particular result.

Composite Hypothesis

A composite hypothesis is a statement that assumes more than one condition or outcome. It can be divided into several sub-hypotheses, each of which represents a different possible outcome.

Empirical Hypothesis

An empirical hypothesis is a statement that is based on observed phenomena or data. It is often used in scientific research to develop theories or models that explain the observed phenomena.

Simple Hypothesis

A simple hypothesis is a statement that assumes only one outcome or condition. It is often used in scientific research to test a single variable or factor.

Complex Hypothesis

A complex hypothesis is a statement that assumes multiple outcomes or conditions. It is often used in scientific research to test the effects of multiple variables or factors on a particular outcome.

Applications of Hypothesis

Hypotheses are used in various fields to guide research and make predictions about the outcomes of experiments or observations. Here are some examples of how hypotheses are applied in different fields:

• Science : In scientific research, hypotheses are used to test the validity of theories and models that explain natural phenomena. For example, a hypothesis might be formulated to test the effects of a particular variable on a natural system, such as the effects of climate change on an ecosystem.
• Medicine : In medical research, hypotheses are used to test the effectiveness of treatments and therapies for specific conditions. For example, a hypothesis might be formulated to test the effects of a new drug on a particular disease.
• Psychology : In psychology, hypotheses are used to test theories and models of human behavior and cognition. For example, a hypothesis might be formulated to test the effects of a particular stimulus on the brain or behavior.
• Sociology : In sociology, hypotheses are used to test theories and models of social phenomena, such as the effects of social structures or institutions on human behavior. For example, a hypothesis might be formulated to test the effects of income inequality on crime rates.
• Business : In business research, hypotheses are used to test the validity of theories and models that explain business phenomena, such as consumer behavior or market trends. For example, a hypothesis might be formulated to test the effects of a new marketing campaign on consumer buying behavior.
• Engineering : In engineering, hypotheses are used to test the effectiveness of new technologies or designs. For example, a hypothesis might be formulated to test the efficiency of a new solar panel design.

How to write a Hypothesis

Here are the steps to follow when writing a hypothesis:

Identify the Research Question

The first step is to identify the research question that you want to answer through your study. This question should be clear, specific, and focused. It should be something that can be investigated empirically and that has some relevance or significance in the field.

Conduct a Literature Review

Before writing your hypothesis, it’s essential to conduct a thorough literature review to understand what is already known about the topic. This will help you to identify the research gap and formulate a hypothesis that builds on existing knowledge.

Determine the Variables

The next step is to identify the variables involved in the research question. A variable is any characteristic or factor that can vary or change. There are two types of variables: independent and dependent. The independent variable is the one that is manipulated or changed by the researcher, while the dependent variable is the one that is measured or observed as a result of the independent variable.

Formulate the Hypothesis

Based on the research question and the variables involved, you can now formulate your hypothesis. A hypothesis should be a clear and concise statement that predicts the relationship between the variables. It should be testable through empirical research and based on existing theory or evidence.

Write the Null Hypothesis

The null hypothesis is the opposite of the alternative hypothesis, which is the hypothesis that you are testing. The null hypothesis states that there is no significant difference or relationship between the variables. It is important to write the null hypothesis because it allows you to compare your results with what would be expected by chance.

Refine the Hypothesis

After formulating the hypothesis, it’s important to refine it and make it more precise. This may involve clarifying the variables, specifying the direction of the relationship, or making the hypothesis more testable.

Examples of Hypothesis

Here are a few examples of hypotheses in different fields:

• Psychology : “Increased exposure to violent video games leads to increased aggressive behavior in adolescents.”
• Biology : “Higher levels of carbon dioxide in the atmosphere will lead to increased plant growth.”
• Sociology : “Individuals who grow up in households with higher socioeconomic status will have higher levels of education and income as adults.”
• Education : “Implementing a new teaching method will result in higher student achievement scores.”
• Marketing : “Customers who receive a personalized email will be more likely to make a purchase than those who receive a generic email.”
• Physics : “An increase in temperature will cause an increase in the volume of a gas, assuming all other variables remain constant.”
• Medicine : “Consuming a diet high in saturated fats will increase the risk of developing heart disease.”

Purpose of Hypothesis

The purpose of a hypothesis is to provide a testable explanation for an observed phenomenon or a prediction of a future outcome based on existing knowledge or theories. A hypothesis is an essential part of the scientific method and helps to guide the research process by providing a clear focus for investigation. It enables scientists to design experiments or studies to gather evidence and data that can support or refute the proposed explanation or prediction.

The formulation of a hypothesis is based on existing knowledge, observations, and theories, and it should be specific, testable, and falsifiable. A specific hypothesis helps to define the research question, which is important in the research process as it guides the selection of an appropriate research design and methodology. Testability of the hypothesis means that it can be proven or disproven through empirical data collection and analysis. Falsifiability means that the hypothesis should be formulated in such a way that it can be proven wrong if it is incorrect.

In addition to guiding the research process, the testing of hypotheses can lead to new discoveries and advancements in scientific knowledge. When a hypothesis is supported by the data, it can be used to develop new theories or models to explain the observed phenomenon. When a hypothesis is not supported by the data, it can help to refine existing theories or prompt the development of new hypotheses to explain the phenomenon.

When to use Hypothesis

Here are some common situations in which hypotheses are used:

• In scientific research , hypotheses are used to guide the design of experiments and to help researchers make predictions about the outcomes of those experiments.
• In social science research , hypotheses are used to test theories about human behavior, social relationships, and other phenomena.
• I n business , hypotheses can be used to guide decisions about marketing, product development, and other areas. For example, a hypothesis might be that a new product will sell well in a particular market, and this hypothesis can be tested through market research.

Characteristics of Hypothesis

Here are some common characteristics of a hypothesis:

• Testable : A hypothesis must be able to be tested through observation or experimentation. This means that it must be possible to collect data that will either support or refute the hypothesis.
• Falsifiable : A hypothesis must be able to be proven false if it is not supported by the data. If a hypothesis cannot be falsified, then it is not a scientific hypothesis.
• Clear and concise : A hypothesis should be stated in a clear and concise manner so that it can be easily understood and tested.
• Based on existing knowledge : A hypothesis should be based on existing knowledge and research in the field. It should not be based on personal beliefs or opinions.
• Specific : A hypothesis should be specific in terms of the variables being tested and the predicted outcome. This will help to ensure that the research is focused and well-designed.
• Tentative: A hypothesis is a tentative statement or assumption that requires further testing and evidence to be confirmed or refuted. It is not a final conclusion or assertion.
• Relevant : A hypothesis should be relevant to the research question or problem being studied. It should address a gap in knowledge or provide a new perspective on the issue.

Advantages of Hypothesis

Hypotheses have several advantages in scientific research and experimentation:

• Guides research: A hypothesis provides a clear and specific direction for research. It helps to focus the research question, select appropriate methods and variables, and interpret the results.
• Predictive powe r: A hypothesis makes predictions about the outcome of research, which can be tested through experimentation. This allows researchers to evaluate the validity of the hypothesis and make new discoveries.
• Facilitates communication: A hypothesis provides a common language and framework for scientists to communicate with one another about their research. This helps to facilitate the exchange of ideas and promotes collaboration.
• Efficient use of resources: A hypothesis helps researchers to use their time, resources, and funding efficiently by directing them towards specific research questions and methods that are most likely to yield results.
• Provides a basis for further research: A hypothesis that is supported by data provides a basis for further research and exploration. It can lead to new hypotheses, theories, and discoveries.
• Increases objectivity: A hypothesis can help to increase objectivity in research by providing a clear and specific framework for testing and interpreting results. This can reduce bias and increase the reliability of research findings.

Limitations of Hypothesis

Some Limitations of the Hypothesis are as follows:

• Limited to observable phenomena: Hypotheses are limited to observable phenomena and cannot account for unobservable or intangible factors. This means that some research questions may not be amenable to hypothesis testing.
• May be inaccurate or incomplete: Hypotheses are based on existing knowledge and research, which may be incomplete or inaccurate. This can lead to flawed hypotheses and erroneous conclusions.
• May be biased: Hypotheses may be biased by the researcher’s own beliefs, values, or assumptions. This can lead to selective interpretation of data and a lack of objectivity in research.
• Cannot prove causation: A hypothesis can only show a correlation between variables, but it cannot prove causation. This requires further experimentation and analysis.
• Limited to specific contexts: Hypotheses are limited to specific contexts and may not be generalizable to other situations or populations. This means that results may not be applicable in other contexts or may require further testing.
• May be affected by chance : Hypotheses may be affected by chance or random variation, which can obscure or distort the true relationship between variables.

About the author

Muhammad Hassan

Researcher, Academic Writer, Web developer

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Learn How To Write A Hypothesis For Your Next Research Project!

Undoubtedly, research plays a crucial role in substantiating or refuting our assumptions. These assumptions act as potential answers to our questions. Such assumptions, also known as hypotheses, are considered key aspects of research. In this blog, we delve into the significance of hypotheses. And provide insights on how to write them effectively. So, let’s dive in and explore the art of writing hypotheses together.

Table of Contents

What is a Hypothesis?

A hypothesis is a crucial starting point in scientific research. It is an educated guess about the relationship between two or more variables. In other words, a hypothesis acts as a foundation for a researcher to build their study.

Here are some examples of well-crafted hypotheses:

• Increased exposure to natural sunlight improves sleep quality in adults.

A positive relationship between natural sunlight exposure and sleep quality in adult individuals.

• Playing puzzle games on a regular basis enhances problem-solving abilities in children.

Engaging in frequent puzzle gameplay leads to improved problem-solving skills in children.

• Students and improved learning hecks.

S tudents using online  paper writing service  platforms (as a learning tool for receiving personalized feedback and guidance) will demonstrate improved writing skills. (compared to those who do not utilize such platforms).

• The use of APA format in research papers. 

Using the  APA format  helps students stay organized when writing research papers. Organized students can focus better on their topics and, as a result, produce better quality work.

The Building Blocks of a Hypothesis

To better understand the concept of a hypothesis, let’s break it down into its basic components:

• Variables . A hypothesis involves at least two variables. An independent variable and a dependent variable. The independent variable is the one being changed or manipulated, while the dependent variable is the one being measured or observed.
• Relationship : A hypothesis proposes a relationship or connection between the variables. This could be a cause-and-effect relationship or a correlation between them.
• Testability : A hypothesis should be testable and falsifiable, meaning it can be proven right or wrong through experimentation or observation.

Types of Hypotheses

When learning how to write a hypothesis, it’s essential to understand its main types. These include; alternative hypotheses and null hypotheses. In the following section, we explore both types of hypotheses with examples. 

Alternative Hypothesis (H1)

This kind of hypothesis suggests a relationship or effect between the variables. It is the main focus of the study. The researcher wants to either prove or disprove it. Many research divides this hypothesis into two subsections: 

• Directional 

This type of H1 predicts a specific outcome. Many researchers use this hypothesis to explore the relationship between variables rather than the groups. 

• Non-directional

You can take a guess from the name. This type of H1 does not provide a specific prediction for the research outcome. 

Here are some examples for your better understanding of how to write a hypothesis.

• Consuming caffeine improves cognitive performance.  (This hypothesis predicts that there is a positive relationship between caffeine consumption and cognitive performance.)
• Aerobic exercise leads to reduced blood pressure.  (This hypothesis suggests that engaging in aerobic exercise results in lower blood pressure readings.)
• Exposure to nature reduces stress levels among employees.  (Here, the hypothesis proposes that employees exposed to natural environments will experience decreased stress levels.)
• Listening to classical music while studying increases memory retention.  (This hypothesis speculates that studying with classical music playing in the background boosts students’ ability to retain information.)
• Early literacy intervention improves reading skills in children.  (This hypothesis claims that providing early literacy assistance to children results in enhanced reading abilities.)
• Time management in nursing students. ( Students who use a  nursing research paper writing service  have more time to focus on their studies and can achieve better grades in other subjects. )

Null Hypothesis (H0)

A null hypothesis assumes no relationship or effect between the variables. If the alternative hypothesis is proven to be false, the null hypothesis is considered to be true. Usually a null hypothesis shows no direct correlation between the defined variables. 

Here are some of the examples

• The consumption of herbal tea has no effect on sleep quality.  (This hypothesis assumes that herbal tea consumption does not impact the quality of sleep.)
• The number of hours spent playing video games is unrelated to academic performance.  (Here, the null hypothesis suggests that no relationship exists between video gameplay duration and academic achievement.)
• Implementing flexible work schedules has no influence on employee job satisfaction.  (This hypothesis contends that providing flexible schedules does not affect how satisfied employees are with their jobs.)
• Writing ability of a 7th grader is not affected by reading editorial example. ( There is no relationship between reading an  editorial example  and improving a 7th grader’s writing abilities.) 
• The type of lighting in a room does not affect people’s mood.  (In this null hypothesis, there is no connection between the kind of lighting in a room and the mood of those present.)
• The use of social media during break time does not impact productivity at work.  (This hypothesis proposes that social media usage during breaks has no effect on work productivity.)

As you learn how to write a hypothesis, remember that aiming for clarity, testability, and relevance to your research question is vital. By mastering this skill, you’re well on your way to conducting impactful scientific research. Good luck!

Importance of a Hypothesis in Research

A well-structured hypothesis is a vital part of any research project for several reasons:

• It provides clear direction for the study by setting its focus and purpose.
• It outlines expectations of the research, making it easier to measure results.
• It helps identify any potential limitations in the study, allowing researchers to refine their approach.

In conclusion, a hypothesis plays a fundamental role in the research process. By understanding its concept and constructing a well-thought-out hypothesis, researchers lay the groundwork for a successful, scientifically sound investigation.

How to Write a Hypothesis?

Here are five steps that you can follow to write an effective hypothesis. 

Step 1: Identify Your Research Question

The first step in learning how to compose a hypothesis is to clearly define your research question. This question is the central focus of your study and will help you determine the direction of your hypothesis.

Step 2: Determine the Variables

When exploring how to write a hypothesis, it’s crucial to identify the variables involved in your study. You’ll need at least two variables:

• Independent variable : The factor you manipulate or change in your experiment.
• Dependent variable : The outcome or result you observe or measure, which is influenced by the independent variable.

Step 3: Build the Hypothetical Relationship

In understanding how to compose a hypothesis, constructing the relationship between the variables is key. Based on your research question and variables, predict the expected outcome or connection. This prediction should be specific, testable, and, if possible, expressed in the “If…then” format.

Step 4: Write the Null Hypothesis

When mastering how to write a hypothesis, it’s important to create a null hypothesis as well. The null hypothesis assumes no relationship or effect between the variables, acting as a counterpoint to your primary hypothesis.

Step 5: Review Your Hypothesis

Finally, when learning how to compose a hypothesis, it’s essential to review your hypothesis for clarity, testability, and relevance to your research question. Make any necessary adjustments to ensure it provides a solid basis for your study.

In conclusion, understanding how to write a hypothesis is crucial for conducting successful scientific research. By focusing on your research question and carefully building relationships between variables, you will lay a strong foundation for advancing research and knowledge in your field.

Hypothesis vs. Prediction: What’s the Difference?

Understanding the differences between a hypothesis and a prediction is crucial in scientific research. Often, these terms are used interchangeably, but they have distinct meanings and functions. This segment aims to clarify these differences and explain how to compose a hypothesis correctly, helping you improve the quality of your research projects.

Hypothesis: The Foundation of Your Research

A hypothesis is an educated guess about the relationship between two or more variables. It provides the basis for your research question and is a starting point for an experiment or observational study.

The critical elements for a hypothesis include:

• Specificity: A clear and concise statement that describes the relationship between variables.
• Testability: The ability to test the hypothesis through experimentation or observation.

To learn how to write a hypothesis, it’s essential to identify your research question first and then predict the relationship between the variables.

Prediction: The Expected Outcome

A prediction is a statement about a specific outcome you expect to see in your experiment or observational study. It’s derived from the hypothesis and provides a measurable way to test the relationship between variables.

Here’s an example of how to write a hypothesis and a related prediction:

• Hypothesis: Consuming a high-sugar diet leads to weight gain.
• Prediction: People who consume a high-sugar diet for six weeks will gain more weight than those who maintain a low-sugar diet during the same period.

Key Differences Between a Hypothesis and a Prediction

While a hypothesis and prediction are both essential components of scientific research, there are some key differences to keep in mind:

• A hypothesis is an educated guess that suggests a relationship between variables, while a prediction is a specific and measurable outcome based on that hypothesis.
• A hypothesis can give rise to multiple experiment or observational study predictions.

To conclude, understanding the differences between a hypothesis and a prediction, and learning how to write a hypothesis, are essential steps to form a robust foundation for your research. By creating clear, testable hypotheses along with specific, measurable predictions, you lay the groundwork for scientifically sound investigations.

Here’s a wrap-up for this guide on how to write a hypothesis. We’re confident this article was helpful for many of you. We understand that many students struggle with writing their school research . However, we hope to continue assisting you through our blog tutorial on writing different aspects of academic assignments.

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Developing a Hypothesis

Two girls exploring plant life in the woods (Christine Glade, iStockphoto)

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Learn what makes a good hypothesis, and how to develop one.

Developing a Scientific Hypothesis

After identifying a  testable question , it is important for students to research and or/review what they already know about the scientific principles involved in their experimental inquiries. After that, and before conducting the inquiry through testing and observation, students need to develop a scientific  hypothesis .

Is a hypothesis the same as a guess?

The short answer is no! Anyone can make a guess about anything. Guesses are not generally based on knowledge, but rather are rough estimates that people give when they don’t know the answer to a question. A scientific hypothesis, on the other hand, is not only based on prior knowledge and experiences but also on known factual information obtained through research.

Misconception Alert Like making an estimate in math, a hypothesis should be written before doing an inquiry, not after!

Is a hypothesis the same as a prediction? 

Again, the answer is no, although the distinction between these two terms is not always clear. A  prediction  is an estimate or forecast about something that might happen or the way that something will be based on prior knowledge and experience and known facts (e.g., I predict it will rain tomorrow, I predict that my plant will have two seed leaves, etc.).

Shown is a colour photograph of a boat near a beach in the rain. The camera lens is sprinkled with rain drops. These are in sharp focus, in the foreground. Most of the rest of the photograph is out of focus in the background.  There is a strip of dark green grass along the bottom of the frame. Above that is a strip of beige sand. The water is shaded from light grey at the bottom to medium grey at the top. A dark green hill rises up behind the water, to the left. The sky is mottled with grey, white and blueish grey clouds. A small, yellow wooden rowboat is in sharp focus. It is moored to the shore with a white rope, next to a round, orange float.

Like a prediction, a hypothesis forecasts what might happen, but a hypothesis goes beyond a prediction. It includes not only what might happen, but why something might happen. In other words, it explains the relationship between variables. The most significant difference between a prediction and an hypothesis is that a hypothesis is intended to lead to a testable investigation, whereas a prediction is not.

To put it in a different way, a prediction is an estimate of an end result (e.g., I predict that the plant will be tall) whereas a hypothesis is a statement that attempts to explain a phenomena by relating cause and effect (e.g., if we give plants more water, then they will grow taller).

Shown is a colour photograph of water falling from a blue watering can onto a pink flowering plant.  The frame is filled with green foliage. In the background, out of focus, is a row of pink, flowering plants in boxes along a wooden railing. In the foreground, a gloved hand tips a large, cornflower blue watering can over the first plant.

Misconception Alert Not every inquiry lends itself to the testing of a hypothesis. Many inquiries involve research questions that ask if relationships exist among variables or involve situations where testing is not possible, such as population inquiries, historical inquiries, etc. For example, you could never test a hypothesis about which type of food a given dinosaur preferred to eat!

Shown is a colour photograph of miniature plastic dinosaurs gathered around a piece of broccoli that resembles a tree.  A piece of broccoli stands upright in the middle of the photograph. It has a long, pale green stem and a full, dark green floret. It looks like a green tree with branches and tiny leaves. Five toy dinosaurs have been placed around the broccoli so they look like they're snacking it. They are a little bit shorter than the broccoli, so their mouths reach the bushiest parts of it.  The dinosaur in the foreground is dark reddish brown with scaly-looking skin and tiny arms. Behind it, a dark green dinosaur with a long neck stretches to the low branches. In the background, a dark brown triceratops looks on. The long neck of a black dinosaur reaches in from the left, to get the higher leaves. On the far left, a bright yellow dinosaur is about to join the meal.

How do you develop a scientific hypothesis?

In order to develop a hypothesis, one should have:

• A good  testable question
• Understanding of the dependent, independent and control  variables  of interest
• Some prior knowledge, such as from observations and research
• Thoughts about how the inquiry could be done (the method)

For example, students may begin with the question:

How does the duration of light exposure affect the surface area of tomato plant leaves?

The variables are:

• Independent = duration of light
• Dependent = surface area of plant leaves
• Controlled = water, soil, seed source, etc.

How then do we formulate a hypothesis from this testable question? A good hypothesis tends to follow the format:

If  we do/change this 

Then  this will happen/be observed, because  we know this., if  these changes are made to a certain independent variable,, then  will we observe a change in a specific dependent variable, because  of our prior knowledge and research..

In the example above, the students have identified that they are interested in exploring how the duration of light affects plants, perhaps exposing plants from the same batch of seeds to light for different numbers of hours (e.g., one hour, two hours, etc.). Knowing that plants need light to grow (from prior knowledge or research), then they may hypothesize that the leaves of a plant may be larger given a longer exposure to light. Knowing all of this, their hypothesis might be:

If  we expose plants to a greater number of hours of light,  then  the surface area of the tomato plant leaves will be larger  because  light affects plant growth.

What makes for a good hypothesis.

A good hypothesis is:

• A statement  The hypothesis is  not  the same as the testable question. The hypothesis is a tentative explanation of what is thought will happen during the inquiry.
• Testable  What is changed (independent variable) and what is affected by the change (dependent variable) should be measurable and observable.
• Falsifiable  A good hypothesis can be either supported or shown to be false by the data collected.
• Clear.  It should be obvious what will be tested, how it will be tested (what will be measured to prove or disprove the hypothesis), and what is expected to happen.

A good question and hypothesis should also help students find answers that are not obvious to them or generally known. For example, most students will know that if you do not water a plant, it will die, so developing a hypothesis such as:

If  we stop watering our plants  then  the plants will die  because  plants need water in order to live.

is overly simplistic and will not help students expand their knowledge. A good experimental inquiry will help students discover things they do not already know.

Misconception Alert The goal of a hypothesis is NOT for a student to be “right.” Having evidence that shows a hypothesis to be false is just as important as having evidence that shows it to be true. A hypothesis is NOT something you prove – it is something you test!

How to develop a Tomatosphere™ hypothesis 

In the Seed Investigation, a testable question is provided to the students:

How does exposure to the space environment or space-like conditions affect the number of tomato seeds that germinate?

In the  variables  section, the dependent and independent variables were identified.

Independent variable :  Seed treatment – Some seeds have been to space or are exposed to space-like conditions in years when seeds do not go to space, while some seeds have not been to space or exposed to space-like conditions.

Dependent variable : Number of seeds that germinate.

What is not provided to the students is a hypothesis to follow from this question. Using the “if…..then…because….” format, have the students develop their hypotheses for the Tomatosphere™ testable question. For example:

If  tomato plant seeds are exposed to the conditions of space,  then  fewer ‘space’ seeds will germinate than non- ‘space’ seeds  because  radiation levels found in space may damage cells in the seeds.

This is not the only possible hypothesis, but it shows some understanding of how plants might be affected by space conditions (e.g., radiation affecting DNA in cells, microgravity affecting growth, etc.) which might be derived from prior knowledge or research.

Is this a good hypothesis? Yes

• It is a statement.
• It is testable.  What is changed (being in space or not) and what is affected by the change (number of seeds germinated) can be measured and observed.
• It is falsifiable.  The student can use the data collected to be able to decide if it supports their hypothesis or if it shows the hypothesis is false (statement is false – more ‘space’ seeds germinate or the germination rate is the same).
• It is clear.  It should be obvious what will be tested (seed germination), how it will be tested (seeds are grown to the point of germination), and what is expected to happen (fewer space seeds will germinate).

To assist with practicing writing a hypothesis, students could be provided with a checklist, such as this one, also available as a [ Google doc ] and [ PDF ].

Writing a Strong Hypothesis Checklist

Hypothesis is a statement that correctly follows the format:

"If _____ then ______ because _________

Hypothesis relates to the Testable Question

Hypothesis makes sense (based on observations and/or research)

Hypothesis can be falsified

Hypothesis includes a cause and effect relationship

Hypothesis could be tested with measurements

Hypothesis is easy to understand

Guided Practice

Have students read the following statements and determine if these are good, okay, or poor hypotheses and why.

Have students use the  Writing a Strong Hypothesis Checklist  for creating a Tomatosphere™ or other hypothesis.

Why is this a good hypothesis? ✓  It is a  statement  that follows the “if….then…because” format. ✓ It is testable.  What is changed (red light vs. green light) and what is affected by the change (size of leaves) is measurable and observable. ✓ It is falsifiable.  It can be supported by evidence (statement is true – leaves will be bigger, statement is untrue – leaves will be smaller or the same size). ✓ It is clear.  It is obvious what will be tested (two colours of light), how it will be tested (at six weeks of age the plant leaves will be measured), and what is expected to happen (plants grown in red light will have bigger leaves). B): 

Why is this a poor hypothesis? ✓  It is a  statement  that follows the “if….then…because” format. ✓ It is not testable.  The variables are very vague. What are the classroom conditions compared to the outdoor conditions? Is the interest in soil? Light? Temperature? What kinds of plants will be grown. ✗ It is not falsifiable.  It would be difficult to support or falsify with evidence because it is vague. ✗ It is not clear.  It is not obvious what will be tested (Soil? Temperature? Light?), how it will be tested and what is expected to happen (what does “better” mean? Taller? Bigger leaves? Flower sooner?). Have students work on changing this vague hypothesis into a more specific one by identifying variables to explore. C): 

Why is this just an “okay” hypothesis? ✓  It is a  statement  that follows the “if….then…because” format. ✗ It is somewhat testable.  What is changed (sugar water vs. regular water) is clear, but what is affected by the change (“better”) is vague. Will the plants be taller? Grow faster? ✗ It is not falsifiable.  It would be difficult to support or falsify with evidence because the “better” is vague. ✗ It is somewhat clear.   It is obvious what will be tested (maple syrup being added to the water) and how it will be tested, but what is expected to happen is not clear (what does “better” mean? Taller? Bigger leaves? Flower sooner?). Have students work on changing this somewhat vague hypothesis into a more specific one by identifying a dependent variable.

A Strong Hypothesis - Science Buddies  (2010) This blog post by Science Buddies explains the parts of a good hypothesis, and the role a hypothesis plays in the scientific process.

Theory vs. Hypothesis vs. Law… Explained!  (2015) This video (7:11 min.) from PBS Studios Be Smart explains how these words mean something totally different in science than in everyday speech, and how they all help us understand how the universe works.

Misconceptions about Science This page by Understanding Science at UC Berkeley gives a thorough definition of the word hypothesis, in a scientific context, as opposed to everyday language.

What is a Scientific Hypothesis?  (2022) This article by Alina Bradford at Live Science discusses what makes a hypothesis testable, the different types of hypotheses, and hypothesis vs. theory.

Writing a Hypothesis  (2013) This video (4:58 min.) by mreppsclassroom explains the purpose of a hypothesis and how to construct one.

Related Topics

• How To Write A Hypothesis

How to Write a Hypothesis: Types and Tips to Remember

Many people might not know what a hypothesis is, the purpose of a hypothesis or where a hypothesis is needed. A hypothesis is a statement that explains the research’s predictions and the reasons behind the research. It is an “educated guess” of the final result of the research problem and is written for an academic research paper. A good hypothesis is carefully stated as a key aspect of the scientific method, yet even the simplest ones can be difficult to explain.

If you are unaware of the process of writing a hypothesis, we are here to help you with all your queries. Read the article and learn how to write a hypothesis for your academic paper/thesis.

Table of Contents

What is a hypothesis.

• Simple Hypothesis
• Complex Hypothesis
• Null Hypothesis
• Alternative Hypothesis
• Logical Hypothesis
• Empirical Hypothesis
• Statistical Hypothesis

Writing a Good Hypothesis – Points to Remember

• How to Write a Hypothesis

Frequently Asked Questions on How to Write a Hypothesis

A hypothesis is prepared in the early stages of a research project. Based on the preliminary research observations, a hypothesis is framed. It is the prediction of the end result of the research problem. For example, suppose you have observed that the plants grow up better with regular watering. In that case, your hypothesis can be “Plants grow better with regular watering”. Once you have got your hypothesis, you can begin the experiments required to support and prove it.

A hypothesis must include variables. It can be some events, objects or concepts which are to be observed and tested for your research experiments. There are two kinds of variables – dependent variables and independent variables. The independent variables are the ones which can be modified in the experiment, and the dependent variables are the ones which can only be observed.

Hypotheses are a crucial part of the research paper since they influence the direction and arrangement of the research methods. The readers will want to know if the hypothesis was proven right or wrong, and therefore it must be mentioned clearly in the introduction or the abstract of the paper.

Types of Hypotheses

Depending on the nature of the research and the findings, the hypothesis can be categorised into one or more of the seven major categories.

1. Simple Hypothesis

A simple hypothesis states the relationship between the two variables (dependent and independent variables).

2. Complex Hypothesis

A complex hypothesis entails the existence of a relationship between two or more variables. It can be two dependent variables and one independent variable or vice versa.

3. Null Hypothesis

A null hypothesis is a statement that states that the variables have no relationship.

4. Alternative Hypothesis

The null hypothesis is the polar opposite of the alternative hypothesis. It states that the two variables under study have a link (one variable has an effect on the other).

5. Logical Hypothesis

In the absence of verifiable proof, a logical hypothesis indicates a relationship between variables. Assertions are based on inference or logic rather than evidence.

6. Empirical Hypothesis

An empirical hypothesis, often known as a “working hypothesis,” is one that is being researched right now. Empirical hypotheses, unlike logical assumptions, are supported by evidence.

7. Statistical Hypothesis

When you test a sample of a population and then use the collected statistical evidence to draw conclusions about the full population, you’ve generated a statistical hypothesis. You test a section of it and then make an educated guess about the rest based on the results.

A good hypothesis is written following the same format and guidelines. To write a good hypothesis, the below-mentioned information has to be added.

Causes and Effects: A hypothesis always includes a cause-and-effect relationship where one variable causes another to change or not change, depending on the type of hypothesis.

Measurable Prediction: Other than logical hypotheses, most hypotheses are designed to be tested. Before you commit to any hypothesis, make sure that it is experimented. Select a testable hypothesis involving an independent variable over which you can have complete control.

Dependent and Independent Variables: You can define the type of variables of your research for the readers.

Language used in a Hypothesis: Make sure to write the hypothesis in simple and clear language.

Adhere to Ethics: Before conducting your research, keep an eye on what you are experimenting with. Those hypotheses which are objectionable, questionable or taboo can be avoided unless they are absolutely necessary.

How to Write a Hypothesis?

A good hypothesis can be written in the following six steps.

Asking a Question

Arousing curiosity in the minds of the readers can be a good way to start a hypothesis. It would make the readers think about the topic critically.

Conducting a Preliminary Research

Before writing the hypothesis, it is essential to get background information regarding the topic. The preliminary research can be done through various web searches, reading books, etc.

Defining the Variables

After you have decided on your hypothesis, you can now decide on your variables. Keep in mind that the independent variables are the ones over which you have complete control and accordingly decide the limits of your hypothesis.

Writing the Hypothesis in the “if-then” Statement

While writing a hypothesis, keep in mind that it must be written in an “if-then” format statement which is a reliable method of expressing the causes and effects. A simple example would be, “If we water the plants daily, then they might grow really well.”

Collection of Adequate Data to Back the Hypothesis

A hypothesis is written to reach the conclusion of the research. After writing the hypothesis, the experiments can be conducted. See to it that you collect the adequate data needed to support the hypothesis.

Writing with Confidence

After you have collected enough data, you can start writing the hypothesis. Make sure you write confidently, without any errors. It would be good to get your writing counter-checked by an expert if you are not confident about it.

What is a hypothesis?

A hypothesis is a statement that explains the research’s predictions and the reasons behind the research. It is written based on various observations.

Why is a hypothesis important?

A hypothesis is important in an academic paper because it explains the result of the research problem. It will help the researcher, as well as the audience, to stay focused and not deviate from the main idea.

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Grammar: Main Parts of Speech

Definitions and examples.

The name of something, like a person, animal, place, thing, or concept. Nouns are typically used as subjects, objects, objects of prepositions, and modifiers of other nouns.

• I = subject
• the dissertation = object
• in Chapter 4 = object of a preposition
• research = modifier

This expresses what the person, animal, place, thing, or concept does. In English, verbs follow the noun.

• It takes a good deal of dedication to complete a doctoral degree.
• She studied hard for the test.
• Writing a dissertation is difficult. (The "be" verb is also sometimes referred to as a copula or a linking verb. It links the subject, in this case "writing a dissertation," to the complement or the predicate of the sentence, in this case, "hard.")

This describes a noun or pronoun. Adjectives typically come before a noun or after a stative verb, like the verb "to be."

• Diligent describes the student and appears before the noun student .
• Difficult is placed after the to be verb and describes what it is like to balance time.

Remember that adjectives in English have no plural form. The same form of the adjective is used for both singular and plural nouns.

• A different idea
• Some different ideas
• INCORRECT: some differents ideas

This gives more information about the verb and about how the action was done. Adverbs tells how, where, when, why, etc. Depending on the context, the adverb can come before or after the verb or at the beginning or end of a sentence.

• Enthusiastically describes how he completed the course and answers the how question.
• Recently modifies the verb enroll and answers the when question.
• Then describes and modifies the entire sentence. See this link on transitions for more examples of conjunctive adverbs (adverbs that join one idea to another to improve the cohesion of the writing).

This word substitutes for a noun or a noun phrase (e.g. it, she, he, they, that, those,…).

• they = applicants
• He = Smith; that = ideas; those = those ideas

This word makes the reference of the noun more specific (e.g. his, her, my, their, the, a, an, this, these, … ).

• Jones published her book in 2015.
• The book was very popular.

Preposition

This comes before a noun or a noun phrase and links it to other parts of the sentence. These are usually single words (e.g., on, at, by ,… ) but can be up to four words (e.g., as far as, in addition to, as a result of, …).

• I chose to interview teachers in the district closest to me.
• The recorder was placed next to the interviewee.
• I stopped the recording in the middle of the interview due to a low battery.

Conjunction

A word that joins two clauses. These can be coordinating (an easy way to remember this is memorizing FANBOYS = for, and, nor, but, or, yet, so) or subordinating (e.g., because, although, when, …).

• The results were not significant, so the alternative hypothesis was accepted.
• Although the results seem promising, more research must be conducted in this area.

Auxiliary Verbs

Helping verbs. They are used to build up complete verbs.

• Primary auxiliary verbs (be, have, do) show the progressive, passive, perfect, and negative verb tenses .
• Modal auxiliary verbs (can, could, may, might, must, shall, should, will, would) show a variety of meanings. They represent ability, permission, necessity, and degree of certainty. These are always followed by the simple form of the verb.
• Semimodal auxiliary verbs (e.g., be going to, ought to, have to, had better, used to, be able to,…). These are always followed by the simple form of the verb.
• primary: have investigated = present perfect tense; has not been determined = passive, perfect, negative form
• The modal could shows ability, and the verb conduct stays in its simple form; the modal may shows degree of certainty, and the verb lead stays in its simple form.
• These semimodals are followed by the simple form of the verb.

Common Endings

Nouns, verbs, adjectives, and adverbs often have unique word endings, called suffixes . Looking at the suffix can help to distinguish the word from other parts of speech and help identify the function of the word in the sentence. It is important to use the correct word form in written sentences so that readers can clearly follow the intended meaning.

Here are some common endings for the basic parts of speech. If ever in doubt, consult the dictionary for the correct word form.

Common Noun Endings

Common verb endings, common adjective endings, common adverb endings, placement and position of adjectives and adverbs, order of adjectives.

If more than one adjective is used in a sentence, they tend to occur in a certain order. In English, two or three adjectives modifying a noun tend to be the limit. However, when writing in APA, not many adjectives should be used (since APA is objective, scientific writing). If adjectives are used, the framework below can be used as guidance in adjective placement.

• Determiner (e.g., this, that, these, those, my, mine, your, yours, him, his, hers they, their, some, our, several,…) or article (a, an, the)
• Opinion, quality, or observation adjective (e.g., lovely, useful, cute, difficult, comfortable)
• Physical description
• (a) size (big, little, tall, short)
• (b) shape (circular,  irregular, triangular)
• (c) age (old, new, young, adolescent)
• (d) color (red, green, yellow)
• Origin (e.g., English, Mexican, Japanese)
• Material (e.g., cotton, metal, plastic)
• Qualifier (noun used as an adjective to modify the noun that follows; i.e., campus activities, rocking chair, business suit)
• Head noun that the adjectives are describing (e.g., activities, chair, suit)

For example:

• This (1) lovely (2) new (3) wooden (4) Italian (5) rocking (6) chair (7) is in my office.
• Your (1) beautiful (2) green (3) French (4) silk (5) business (6) suit (7) has a hole in it.

Commas With Multiple Adjectives

A comma is used between two adjectives only if the adjectives belong to the same category (for example, if there are two adjectives describing color or two adjectives describing material). To test this, ask these two questions:

• Does the sentence make sense if the adjectives are written in reverse order?
• Does the sentence make sense if the word “and” is written between them?

If the answer is yes to the above questions, the adjectives are separated with a comma. Also keep in mind a comma is never used before the noun that it modifies.

• This useful big round old green English leather rocking chair is comfortable . (Note that there are no commas here because there is only one adjective from each category.)
• A lovely large yellow, red, and green oil painting was hung on the wall. (Note the commas between yellow, red, and green since these are all in the same category of color.)

Position of Adverbs

Adverbs can appear in different positions in a sentence.

• At the beginning of a sentence: Generally , teachers work more than 40 hours a week.
• After the subject, before the verb: Teachers generally work more than 40 hours a week.
• At the end of a sentence: Teachers work more than 40 hours a week, generally .
• However, an adverb is not placed between a verb and a direct object. INCORRECT: Teachers work generally more than 40 hours a week.

More Detailed Rules for the Position of Adverbs

• Adverbs that modify the whole sentence can move to different positions, such as certainly, recently, fortunately, actually, and obviously.
• Recently , I started a new job.
• I recently started a new job.
• I started a new job recently .
• Many adverbs of frequency modify the entire sentence and not just the verb, such as frequently, usually, always, sometimes, often , and seldom . These adverbs appear in the middle of the sentence, after the subject.
• INCORRECT: Frequently she gets time to herself.
• INCORRECT: She gets time to herself frequently .
• She has frequently exercised during her lunch hour. (The adverb appears after the first auxiliary verb.)
• She is frequently hanging out with old friends. (The adverb appears after the to be verb.)
• Adverbial phrases work best at the end of a sentence.
• He greeted us in a very friendly way .
• I collected data for 2 months .

Main Parts of Speech Video Playlist

Note that these videos were created while APA 6 was the style guide edition in use. There may be some examples of writing that have not been updated to APA 7 guidelines.

• Mastering the Mechanics: Nouns (video transcript)
• Mastering the Mechanics: Introduction to Verbs (video transcript)
• Mastering the Mechanics: Articles (video transcript)
• Mastering the Mechanics: Introduction to Pronouns (video transcript)
• Mastering the Mechanics: Modifiers (video transcript)

Writing Tools: Dictionary and Thesaurus Refresher Video

Note that this video was created while APA 6 was the style guide edition in use. There may be some examples of writing that have not been updated to APA 7 guidelines.

• Writing Tools: Dictionary and Thesaurus Refresher (video transcript)

Related Resources

Knowledge Check: Main Parts of Speech

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Understanding a Hypothesis (Definition, Null, and Examples)

You come home exhausted and plop down on the couch. You don’t know why you are feeling so weary. You think about several possible reasons. Is it because you stayed up late last night? Is it because you skipped breakfast? Or is it because you had to take the stairs due to a power outage? Or is it because of all the above reasons?

What you are doing is hypothesizing about why you are feeling tired.

If you enjoy reading detective stories, you would have already come across a hypothesis. A good whodunit mystery confounds the reader with multiple hypotheses about who committed the crime.

• What is a Hypothesis?

The term hypothesis is often used in a scientific context as a possible explanation for an occurrence.

The word originated from ancient Greek and means “putting under” indicating its early association with experimentation.

A hypothesis is:

• An assumption that serves as a starting point for further research
• A supposition made on the basis of insufficient evidence
• A tentative and logical statement that can be tested for its authenticity
• An idea that seeks to explain why a phenomenon takes place
• A prediction about the outcome of a study according to known facts
• A proposal about the possible relationship between two or more variables

A scientist testing a hypothesis is no different from a detective investigating a crime scene. Famous detectives such as Sherlock Holmes combine the evidence with their powers of prediction to identify the criminal from several potential suspects.

The scientist examines each hypothesis rigorously for any inconsistencies through experiments before it can receive the stamp of approval.

Scientists accept a hypothesis as a theory only after it has been validated several times in different conditions. This includes use of scientific methods and protocols involving observation and analysis of results.

A good hypothesis seeks to establish a causal relationship between two or more variables, primarily between the independent and the dependent variable.

Brushing your teeth at least twice in a day reduces the incidence of dental caries.

The independent variable or cause in the above example is the number of times you brush in a day. The dependent variable or effect is the incidence of dental caries or cavities.

A scientist or researcher tests a hypothesis by changing the independent variable and measuring its effect on the dependent variable.

A relationship between a single independent and dependent variable is known as a simple hypothesis.

The mathematical expression of this relationship is:

• where x is the independent variable and Y is the dependent variable and
• where x is the input and Y is the output or a function of x

So, brushing your teeth at least twice daily is an input and the reduction of dental caries is an output or a function of the action of brushing your teeth. 

If there are multiple independent variables or in some cases more than a single dependent variable, the statement is a complex hypothesis.

Brushing your teeth at least twice a day and using dental floss reduces the incidence of cavities and periodontitis.

In the above example the two independent variables are brushing teeth and using dental floss. The dependent variables are reduction in cavities and periodontitis or gum infection. In this example the two independent variables are common for the two dependent variables.

The equation of a complex hypothesis can be written as:

Y = f(x 1 +x 2 +x 3 …)

Y 1 = f(z 1 +z 2 +z 3 …)

where z is a different set of independent variables for Y1 as the dependent variable

• Developing a Hypothesis

A hypothesis is a frame of reference or a window through which you observe a phenomenon. The phenomenon is the dependent variable. Your job is to determine the independent variables that are causing the event.

Cultivate the habit of looking for patterns in anything that happens. Train your mind to think in terms of stimulus and reaction or cause and effect.

This will enable you to glean insights from the knowledge you gather. You will then be able to write a strong hypothesis that focuses on the variables that matter over the noise.

The six steps to developing a hypothesis are:

• Ask a question
• Preliminary research
• Formulate the hypothesis
• Refine the hypothesis
• Phrase your hypothesis in three ways
• Write a null hypothesis

Ask a Question

The first step is to write a research question.

To write an effective research question be as curious as possible. Start with asking yourself a ton of questions.

Begin with broad and open-ended questions before narrowing it down to more specific ones.

You can use the 5W1H method to get into the mode of writing a research question.

• What took place?
• When did it happen?
• Where did it occur?
• Why did it take place?
• Who did it affect ?
• How did it happen?

The research question needs to be clear, objective , well-defined and measurable.

Do people who take health supplements log in fewer sick days at work in a year than those who don’t?

After you have framed the right question you can make an educated guess to answer it. This answer will be your preliminary hypothesis. Your hypothesis will attempt to answer the research question with observable facts through various experiments.

Preliminary Research

You don’t have to start from scratch. You can draw from preexisting knowledge and well-established theories to discount fallacious premises at the outset.

Resources that you can refer to include case studies, research papers and theses published in academic or scientific journals. A thorough background research will help you to look at the research question from several angles.

Do keep an open mind or a blank slate to avoid falling in the trap of preconceived notions and prejudices. Your initial research should help you focus on the areas where you are most likely to find the answers.

You can come up with a blueprint or outline highlighting the variables that you think are most relevant to your research question.

Think how changing the attributes of a single variable potentially affects others. You may need to operationalize or define how you are going to measure the variables and their effects.

Formulate the Hypothesis

It’s time now to put together your hypothesis into words.

A sound hypothesis states:

• Who or what is being studied?
• The relationship between the variables
• A measurable and reproducible outcome
• The possibility to prove it as true or false

Teenagers in the 14-16 age group who eat a high-protein diet are taller by two inches than the average height for that age group.

The next step is to ensure your statement ticks all the boxes for a strong hypothesis.

Is the hypothesis:

• Precise and quantifiable without any ambiguity
• Lucid and focused on the results described in the research question

Does the hypothesis include:

• An independent and dependent variable
• Variables that can be changed or controlled
• Terms that even a layman can understand
• A well-defined outcome

Phrase your Hypothesis in Three Ways

A hypothesis is often written in an If-then format. This format describes the cause and effect relationship between an independent variable and a dependent variable.

Phrase your hypothesis as “If {you make changes to an independent variable} then {you will observe this change in the dependent variable}.”

If employees are given more autonomy to take work-related decisions then their overall performance improves.

Another way to write a hypothesis is by directly stating the outcome between the two variables.

More autonomy in terms of taking work-related decisions helps to improve an employee’s overall performance.

You can also state a hypothesis as a comparison between two groups.

Employees who are offered more autonomy to take work-related decisions show better overall performance than those who work in a micro-managed environment.

Write a Null Hypothesis

The next step is to frame a null hypothesis, especially if your study requires you to analyze the data statistically. A null hypothesis by default takes a converse position to the researcher’s hypothesis.

Your statement is known as the alternative hypothesis while its opposite outcome is referred to as the null hypothesis.

If you expect a change according to a relationship between the variables the null hypothesis denies the possibility of any change or association between the variables. If you expect the conditions to remain constant the null hypothesis states that change will take place.

The null hypothesis is referred to as H 0. Your hypothesis which is the alternative is written as H 1 or H a .

H 1 : A player who is more than two meters tall has a better chance of winning the National Basketball Association Most Valuable Player Award.

H 0 : The height of a player does not affect his prospects of winning the National Basketball Association Most Valuable Player Award.

Hypothesis Examples

Examples of research questions.

• Which loop diuretic drug is more effective for treating heart failure?
• Does attending online learning sessions help students to improve their exam scores?
• Does talking on the phone while driving cause more accidents?
• Does increasing the pressure affect the rate of reaction between gases?
• Is a person more likely to be obese if she or he eats unhealthy foods at least four times in a week?

Examples of a Hypothesis

• The clinical trial of the new drug Furosemide proved that it is better at treating heart failure than other loop diuretic drugs such as Bumetanide.
• The students who attended online learning sessions had better exam scores than those who skipped the sessions.
• Drivers who talk on the phone are likely to have an accident than those who don’t.
• Increasing the pressure affects the concentration of gases and it acts as a catalyst in speeding up the rate of reaction.
• People who eat processed foods frequently are more likely to be obese than people who limit their intake of such foods.

Examples of a Null Hypothesis

• The clinical trial proved that there is no difference between the effectiveness of Furosemide and other loop diuretic drugs, such as Bumetanide, for treating heart failure.
• There is no difference in the exam scores of students who attended online learning sessions and those who did not attend.
• There is no difference in the rate of accidents experienced by drivers who talk on the phone compared with those who don’t talk on the phone while driving.
• The elevation of pressure has no effect on the rate of reaction between gases.
• The food consumed and its frequency of consumption do not affect the probability of a person becoming obese.

What are Null Hypotheses?

The null hypothesis states the opposite outcome to the researcher’s hypothesis.

In most cases, the null hypothesis’s default position is a prediction that no relationship exists between any two or more variables. The null hypothesis denies the possibility of a causal relationship existing between an assumed independent and dependent variable.

The symbol of the null hypothesis is H 0 .

The notion of a null hypothesis fulfills the requirement of the falsifiability of a hypothesis before it can be accepted as valid.

A null hypothesis is often written as a negative statement that posits that the original hypothesis is false. It either claims that the results obtained are due to chance or there is no evidence to prove any change.

Original Hypothesis: Use of nitrogen fertilizers helps plants grow faster as compared to use of phosphorus or potassium fertilizers. 

Null Hypothesis (H 0 ): The fertilizer used has no bearing on the rate of plant growth

What are Alternative Hypotheses?

An alternative hypothesis states the researcher’s supposition of a causal relationship between any two or more variables. Alternative hypotheses are based upon an observable effect and seek to predict how changing an independent variable will affect the dependent variable.

An alternative hypothesis is symbolized as H 1 or H a . It’s often written together with a null hypothesis with the two statements existing as a dual pair of opposite assumptions. Only a single statement among two can be true.

Alternative hypotheses try to determine that the results are obtained due to significant changes related to the variables and not due to chance.

Research Question: Does washing hands thoroughly with soap before eating a meal reduce the rate of recurrence of respiratory ailments?

Alternative Hypothesis (H 1 ): Washing hands with soap before eating reduces the rate of recurrence of respiratory ailments by 30% compared with those who neglect hand hygiene.

Null Hypothesis (H 0 ): Washing hands with soap before eating has no effect on the rate of recurrence of respiratory ailments. 

What is Hypothesis Testing?

After you have formulated a hypothesis, you need to choose a research and testing method.

Use a descriptive approach when experiments are difficult to conduct. A descriptive method incorporates case studies and surveys to collect data.

You can employ statistical tools such as a correlational study to measure the relationship between variables.

A correlational study calculates the probability of whether a linkage between two variables can be determined or do the changes occur purely due to chance. Do note that correlation is not equivalent to causality.

This method lets you arrive at a conclusion by generalizing the data obtained without performing any actual experiments. A hypothesis proved using this approach is known as a statistical hypothesis.

The other approach is the experimental method in which causal relationships are established between different variables through demonstrations. A working or empirical hypothesis often makes use of the experimental method to determine the relationships between the variables.

The steps for testing a hypothesis experimentally are:

• Design of experiments
• Collating data
• Analysis of observable facts
• Summarizing the conclusions
• Validating the hypothesis as a theory

How to Write a Good Hypothesis

To find ideas for a hypothesis, you can look through discussion sections in academic and scientific journals or browse online publications. You will come across questions that can be investigated further.

Simple Steps

The steps to write a strong hypothesis are:

• Choose your frame of reference or direction for determining the cause
• Such an approach is known as a directional hypothesis
• If you are unable to determine a starting point or the current theories are ambiguous and contradictory, you can choose a non-directional approach
• This method involves stating the facts and observations randomly and then seeking to find a pattern
• Identify the key variables
• A variable is any attribute that can have measurable values such as temperature, time, or length
• Tentatively label some variables as independent and some as dependent
• State the relationship between the variables using clear and objective language
• Operationalize or define how you will measure the variables for testability
• Write the statement in the If-then format. You can also write it as a declarative sentence
• Avoid jargon and use simple words that can be understood by a layman
• Write a null hypothesis to satisfy the condition of falsifiability

If you watch television for more than three hours a day, then your ability to concentrate diminishes.

How to Write a Scientific Hypothesis

A good scientific hypothesis is:

• Consistent: Use preexisting knowledge as a springboard for further research
• Testable: Include words that are quantifiable or measurable
• Concise: Cut down on verbose phrases and use precise words
• Scalable: Formulate the statement in a universal context based on the variables
• Promising: State unexplained occurrences as loose ends that can be investigated further

Simple steps

• Record your observations and facts about the topic
• Evaluate your statements for possible links to determine the cause and effect
• Document all potential explanations to analyze further
• Write the null hypothesis along with your own hypothesis
• This satisfies the requisite condition for a valid hypothesis. It can either be confirmed or disproved

If you plant cotton in black soil, then the production is boosted by 20% as compared to the output from red soil.

How to write a Psychology Hypothesis

A psychology hypothesis often begins with how the environment or certain parameters within it influence or cause a specific behavior.

To write a sound psychology hypothesis:

• Choose a topic that you are genuinely interested in
• Do not ramble. Keep it short and simple
• Use previous research and your own study to direct your vision
• Ascertain and define the variables
• You can write the hypothesis either as an If-then statement
• Other alternatives are to write the hypothesis as a direct sentence or a comparative supposition

Use the following questions to guide your understanding of the topic.

• Is your hypothesis based on a preexisting theory or your own research? 
• Can your hypothesis be tested for falsifiability?
• What are the independent and dependent variables?

People who exercise regularly are less at risk from depression than people who lead a sedentary life.

• What is and How to Write a Good Hypothesis in Research?
• How to Write a Hypothesis in 6 Steps
• Developing Hypothesis and Research Questions
• Forming a Good Hypothesis for Scientific Research
• 6 Hypothesis Examples in Psychology
• Correlational Research | When & How to Use
• How to Write a Strong Hypothesis in 6 Simple Steps
• How to Develop a Good Research Hypothesis
• How To Develop a Hypothesis (With Elements, Types and Examples)
• Definition of Hypothesis

Inside this article

Fact checked: Content is rigorously reviewed by a team of qualified and experienced fact checkers. Fact checkers review articles for factual accuracy, relevance, and timeliness. Learn more.

About the author

Dalia Y.: Dalia is an English Major and linguistics expert with an additional degree in Psychology. Dalia has featured articles on Forbes, Inc, Fast Company, Grammarly, and many more. She covers English, ESL, and all things grammar on GrammarBrain.

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Definition of hypothesis

Did you know.

The Difference Between Hypothesis and Theory

A hypothesis is an assumption, an idea that is proposed for the sake of argument so that it can be tested to see if it might be true.

In the scientific method, the hypothesis is constructed before any applicable research has been done, apart from a basic background review. You ask a question, read up on what has been studied before, and then form a hypothesis.

A hypothesis is usually tentative; it's an assumption or suggestion made strictly for the objective of being tested.

A theory , in contrast, is a principle that has been formed as an attempt to explain things that have already been substantiated by data. It is used in the names of a number of principles accepted in the scientific community, such as the Big Bang Theory . Because of the rigors of experimentation and control, it is understood to be more likely to be true than a hypothesis is.

In non-scientific use, however, hypothesis and theory are often used interchangeably to mean simply an idea, speculation, or hunch, with theory being the more common choice.

Since this casual use does away with the distinctions upheld by the scientific community, hypothesis and theory are prone to being wrongly interpreted even when they are encountered in scientific contexts—or at least, contexts that allude to scientific study without making the critical distinction that scientists employ when weighing hypotheses and theories.

The most common occurrence is when theory is interpreted—and sometimes even gleefully seized upon—to mean something having less truth value than other scientific principles. (The word law applies to principles so firmly established that they are almost never questioned, such as the law of gravity.)

This mistake is one of projection: since we use theory in general to mean something lightly speculated, then it's implied that scientists must be talking about the same level of uncertainty when they use theory to refer to their well-tested and reasoned principles.

The distinction has come to the forefront particularly on occasions when the content of science curricula in schools has been challenged—notably, when a school board in Georgia put stickers on textbooks stating that evolution was "a theory, not a fact, regarding the origin of living things." As Kenneth R. Miller, a cell biologist at Brown University, has said , a theory "doesn’t mean a hunch or a guess. A theory is a system of explanations that ties together a whole bunch of facts. It not only explains those facts, but predicts what you ought to find from other observations and experiments.”

While theories are never completely infallible, they form the basis of scientific reasoning because, as Miller said "to the best of our ability, we’ve tested them, and they’ve held up."

• proposition
• supposition

hypothesis , theory , law mean a formula derived by inference from scientific data that explains a principle operating in nature.

hypothesis implies insufficient evidence to provide more than a tentative explanation.

theory implies a greater range of evidence and greater likelihood of truth.

law implies a statement of order and relation in nature that has been found to be invariable under the same conditions.

Examples of hypothesis in a Sentence

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'hypothesis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Greek, from hypotithenai to put under, suppose, from hypo- + tithenai to put — more at do

1641, in the meaning defined at sense 1a

Phrases Containing hypothesis

• counter - hypothesis
• nebular hypothesis
• null hypothesis
• planetesimal hypothesis
• Whorfian hypothesis

Articles Related to hypothesis

This is the Difference Between a...

This is the Difference Between a Hypothesis and a Theory

In scientific reasoning, they're two completely different things

Dictionary Entries Near hypothesis

hypothermia

hypothesize

Cite this Entry

“Hypothesis.” Merriam-Webster.com Dictionary , Merriam-Webster, https://www.merriam-webster.com/dictionary/hypothesis. Accessed 12 May. 2024.

Kids Definition

Kids definition of hypothesis, medical definition, medical definition of hypothesis, more from merriam-webster on hypothesis.

Nglish: Translation of hypothesis for Spanish Speakers

Britannica English: Translation of hypothesis for Arabic Speakers

Britannica.com: Encyclopedia article about hypothesis

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Parts of Speech: The Ultimate Guide for Students and Teachers

This article is part of the ultimate guide to language for teachers and students. Click the buttons below to view these.

What are Parts of Speech ?

Just as a skilled bricklayer must get to grips with the trowel, brick hammer, tape measure, and spirit level, the student-writer must develop a thorough understanding of the tools of their trade too.

In English, words can be categorized according to their common syntactic function in a sentence, i.e. the job they perform.

We call these different categories Parts of Speech . Understanding the various parts of speech and how they work has several compelling benefits for our students.

Without first acquiring a firm grasp of the various parts of speech, students will struggle to fully comprehend how language works. This is essential not only for the development of their reading comprehension but their writing skills too.

Parts of speech are the core building blocks of grammar . To understand how a language works at a sentence and a whole-text level, we must first master parts of speech.

In English, we can identify eight of these individual parts of speech, and these will provide the focus for our Complete Guide to Parts of Speech .

THE EIGHT PARTS OF SPEECH (Click to jump to each section)

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Often the first word a child speaks will be a noun, for example, Mum , Dad , cow , dog , etc.

Nouns are naming words, and, as most school kids can recite, they are the names of people, places, and things . But, what isn’t as widely understood by many of our students is that nouns can be further classified into more specific categories. 

These categories are:

Common Nouns

Proper nouns, concrete nouns, abstract nouns, collective nouns, countable nouns, uncountable nouns.

All nouns can be classified as either common or proper .

Common nouns are the general names of people, places, and things. They are groups or classes on their own, rather than specific types of people, places, or things such as we find in proper nouns.

Common nouns can be further classified as abstract or concrete – more on this shortly!

Some examples of common nouns include:

People: teacher, author, engineer, artist, singer.

Places: country, city, town, house, garden.

Things: language, trophy, magazine, movie, book.

Proper nouns are the specific names for people, places, and things. Unlike common nouns, which are always lowercase, proper nouns are capitalized. This makes them easy to identify in a text.

Where possible, using proper nouns in place of common nouns helps bring precision to a student’s writing.

Some examples of proper nouns include:

People: Mrs Casey, J.K. Rowling, Nikola Tesla, Pablo Picasso, Billie Eilish.

Places: Australia, San Francisco, Llandovery, The White House, Gardens of Versailles.

Things: Bulgarian, The World Cup, Rolling Stone, The Lion King, The Hunger Games.

Nouns Teaching Activity: Common vs Proper Nouns

• Provide students with books suitable for their current reading level.
• Instruct students to go through a page or two and identify all the nouns.
• Ask students to sort these nouns into two lists according to whether they are common nouns or proper nouns.

As mentioned, all common and proper nouns can be further classified as either concrete or abstract .

A concrete noun is any noun that can be experienced through one of the five senses. In other words, if you can see, smell, hear, taste, or touch it, then it’s a concrete noun.

Some examples of concrete nouns include:

Abstract nouns refer to those things that can’t be experienced or identified through the five senses.

They are not physical things we can perceive but intangible concepts and ideas, qualities and states.

Some examples of abstract nouns include:

Nouns Teaching Activity: Concrete Vs. Abstract Nouns

• Provide students with a book suitable for their current reading level.
• Instruct students to go through a page or two and identify all the nouns (the lists from Practice Activity #1 may be suitable).
• This time, ask students to sort these nouns into two lists according to whether they are concrete or abstract nouns.

A collective noun is the name of a group of people or things. That is, a collective noun always refers to more than one of something.

Some examples of collective nouns include:

People: a board of directors, a team of football players, a cast of actors, a band of musicians, a class of students.

Places: a range of mountains, a suite of rooms, a union of states, a chain of islands.

Things: a bale of hay, a constellation of stars, a bag of sweets, a school of fish, a flock of seagulls.

Countable nouns are nouns that refer to things that can be counted. They come in two flavors: singular and plural .

In their singular form, countable nouns are often preceded by the article, e.g. a , an , or the .

In their plural form, countable nouns are often preceded by a number. They can also be used in conjunction with quantifiers such as a few and many .

Some examples of countable nouns include:

COUNTABLE NOUNS EXAMPLES

Also known as mass nouns, uncountable nouns are, as their name suggests, impossible to count. Abstract ideas such as bravery and compassion are uncountable, as are things like liquid and bread .

These types of nouns are always treated in the singular and usually do not have a plural form. 

They can stand alone or be used in conjunction with words and phrases such as any , some , a little , a lot of , and much .

Some examples of uncountable nouns include:

UNCOUNTABLE NOUNS EXAMPLES

Nouns teaching activity: how many can you list .

• Organize students into small groups to work collaboratively.
• Challenge students to list as many countable and uncountable nouns as they can in ten minutes.
• To make things more challenging, stipulate that there must be an uncountable noun and a countable noun to gain a point.
• The winning group is the one that scores the most points.

Without a verb, there is no sentence! Verbs are the words we use to represent both internal and external actions or states of being. Without a verb, nothing happens.

There are many different types of verbs. Here, we will look at five important verb forms organised according to the jobs they perform:

Dynamic Verbs

Stative verbs, transitive verbs, intransitive verbs, auxiliary verbs.

Each verb can be classified as being either an action or a stative verb.

Dynamic or action verbs describe the physical activity performed by the subject of a sentence. This type of verb is usually the first we learn as children. 

For example, run , hit , throw , hide , eat , sleep , watch , write , etc. are all dynamic verbs, as is any action performed by the body.

Let’s see a few examples in sentences:

• I jogged around the track three times.
• She will dance as if her life depends on it.
• She took a candy from the bag, unwrapped it, and popped it into her mouth.

If a verb doesn’t describe a physical activity, then it is a stative verb.

Stative verbs refer to states of being, conditions, or mental processes. Generally, we can classify stative verbs into four types:

• Emotions/Thoughts

Some examples of stative verbs include: 

Senses: hurt, see, smell, taste, hear, etc.

Emotions: love, doubt, desire, remember, believe, etc.

Being: be, have, require, involve, contain, etc.

Possession: want, include, own, have, belong, etc.

Here are some stative verbs at work in sentences:

• That is one thing we can agree on.
• I remember my first day at school like it was yesterday.
• The university requires students to score at least 80%.
• She has only three remaining.

Sometimes verbs can fit into more than one category, e.g., be , have , look , see , e.g.,

• She looks beautiful. (Stative)
• I look through the telescope. (Dynamic)

Each action or stative verb can also be further classified as transitive or intransitive .

A transitive verb takes a direct object after it. The object is the noun, noun phrase, or pronoun that has something done to it by the subject of the sentence.

We see this in the most straightforward English sentences, i.e., the Subject-Verb-Object or SVO sentence. 

Here are two examples to illustrate. Note: the subject of each sentence is underlined, and the transitive verbs are in bold.

• The teacher answered the student’s questions.
• She studies languages at university.
• My friend loves cabbage.

Most sentences in English employ transitive verbs.

An intransitive verb does not take a direct object after it. It is important to note that only nouns, noun phrases, and pronouns can be classed as direct objects. 

Here are some examples of intransitive verbs – notice how none of these sentences has direct objects after their verbs.

• Jane’s health improved .
• The car ran smoothly.
• The school opens at 9 o’clock.

Auxiliary verbs, also known as ‘helping’ verbs, work with other verbs to affect the meaning of a sentence. They do this by combining with a main verb to alter the sentence’s tense, mood, or voice.

Auxiliary verbs will frequently use not in the negative.

There are relatively few auxiliary verbs in English. Here is a list of the main ones:

• be (am, are, is, was, were, being)
• do (did, does, doing)
• have (had, has, having)

Here are some examples of auxiliary verbs (in bold) in action alongside a main verb (underlined).

She is working as hard as she can.

• You must not eat dinner until after five o’clock.
• The parents may come to the graduation ceremony.

The Subject-Auxiliary Inversion Test

To test whether or not a verb is an auxiliary verb, you can use the Subject-Auxiliary Inversion Test .

• Take the sentence, e.g:
• Now, invert the subject and the suspected auxiliary verb to see if it creates a question.

Is she working as hard as she can?

• Can it take ‘not’ in the negative form?

She is not working as hard as she can.

• If the answer to both of these questions is yes, you have an auxiliary verb. If not, you have a full verb.

Verbs Teaching Activity: Identify the Verbs

• Instruct students to go through an appropriate text length (e.g., paragraph, page, etc.) and compile a list of verbs.
• In groups, students should then discuss and categorize each verb according to whether they think they are dynamic or stative, transitive or intransitive, and/or auxiliary verbs.

The job of an adjective is to modify a noun or a pronoun. It does this by describing, quantifying, or identifying the noun or pronoun. Adjectives help to make writing more interesting and specific. Usually, the adjective is placed before the word it modifies.

As with other parts of speech, not all adjectives are the same. There are many different types of adjectives and, in this article, we will look at:

Descriptive Adjectives

• Degrees of Adjectives

Quantitative Adjectives

Demonstrative adjectives, possessive adjectives, interrogative adjectives, proper adjectives.

Descriptive adjectives are what most students think of first when asked what an adjective is. Descriptive adjectives tell us something about the quality of the noun or pronoun in question. For this reason, they are sometimes referred to as qualitative adjectives .

Some examples of this type of adjective include:

• hard-working

In sentences, they look like this:

• The pumpkin was enormous .
• It was an impressive feat of athleticism I ever saw.
• Undoubtedly, this was an exquisite vase.
• She faced some tough competition.

Degrees of Adjectives 

Descriptive adjectives have three degrees to express varying degrees of intensity and to compare one thing to another. These degrees are referred to as positive , comparative , and superlative .

The positive degree is the regular form of the descriptive adjective when no comparison is being made, e.g., strong .

The comparative degree is used to compare two people, places, or things, e.g., stronger .

There are several ways to form the comparative, methods include:

• Adding more or less before the adjective
• Adding -er to the end of one syllable adjectives
• For two-syllable adjectives ending in y , change the y to an i and add -er to the end.

The superlative degree is typically used when comparing three or more things to denote the upper or lowermost limit of a quality, e.g., strongest .

There are several ways to form the superlative, including:

• Adding most or least before the adjective
• Adding -est to the end of one syllable adjectives
• For two-syllable adjectives ending in y , change the y to an i and add -est to the end.

There are also some irregular adjectives of degree that follow no discernible pattern that must be learned off by students, e.g., good – better – best .

Let’s take a look at these degrees of adjectives in their different forms.

Let’s take a quick look at some sample sentences:

• It was a beautiful example of kindness. 

Comparative

• The red is nice, but the green is prettier .

Superlative

• This mango is the most delicious fruit I have ever tastiest. 

Quantitive adjectives provide information about how many or how much of the noun or pronoun.

Some quantitive adjectives include:

• She only ate half of her sandwich.
• This is my first time here.
• I would like three slices, please.
• There isn’t a single good reason to go.
• There aren’t many places like it.
• It’s too much of a good thing.
• I gave her a whole box of them.

A demonstrative adjective identifies or emphasizes a noun’s place in time or space. The most common demonstrative adjectives are this , that , these , and those .

Here are some examples of demonstrative adjectives in use:

• This boat is mine.
• That car belongs to her.
• These shoes clash with my dress.
• Those people are from Canada.

Possessive adjectives show ownership, and they are sometimes confused with possessive pronouns.

The most common possessive adjectives are my , your , his , her , our , and their .

Students need to be careful not to confuse these with possessive pronouns such as mine , yours , his (same in both contexts), hers , ours , and theirs .

Here are some examples of possessive adjectives in sentences:

• My favorite food is sushi.
• I would like to read your book when you have finished it.
• I believe her car is the red one.
• This is their way of doing things.
• Our work here is done.

Interrogative adjectives ask questions, and, in common with many types of adjectives, they are always followed by a noun. Basically, these are the question words we use to start questions. Be careful however, interrogative adjectives modify nouns. If the word after the question word is a verb, then you have an interrogative adverb on hand.

Some examples of interrogative adjectives include what , which , and whose .

Let’s take a look at these in action:

• What drink would you like?
• Which car should we take?
• Whose shoes are these?

Please note: Whose can also fit into the possessive adjective category too.

We can think of proper adjectives as the adjective form of proper nouns – remember those? They were the specific names of people, places, and things and need to be capitalized.

Let’s take the proper noun for the place America . If we wanted to make an adjective out of this proper noun to describe something, say, a car we would get ‘ American car’.

Let’s take a look at another few examples:

• Joe enjoyed his cup of Ethiopian coffee.
• My favorite plays are Shakespearean tragedies.
• No doubt about it, Fender guitars are some of the best in the world.
• The Mona Lisa is a fine example of Renaissance art.

Though it may come as a surprise to some, articles are also adjectives as, like all adjectives, they modify nouns. Articles help us determine a noun’s specification. 

For example, ‘a’ and ‘an’ are used in front of an unspecific noun, while ‘the’ is used when referring to a specific noun.

Let’s see some articles as adjectives in action!

• You will find an apple inside the cupboard.
• This is a car.
• The recipe is a family secret.

Adjectives Teaching Activity: Types of Adjective Tally

• Choose a suitable book and assign an appropriate number of pages or length of a chapter for students to work with.
• Students work their way through each page, tallying up the number of each type of adjective they can identify using a table like the one below:
• Note how degrees of adjective has been split into comparative and superlative. The positive forms will take care of in the descriptive category.
• You may wish to adapt this table to exclude the easier categories to identify, such as articles and demonstrative, for example.

Traditionally, adverbs are defined as those words that modify verbs, but they do so much more than that. They can be used not only to describe how verbs are performed but also to modify adjectives, other adverbs, clauses, prepositions, or entire sentences.

With such a broad range of tasks at the feet of the humble adverb, it would be impossible to cover every possibility in this article alone. However, there are five main types of adverbs our students should familiarize themselves with. These are:

Adverbs of Manner

Adverbs of time, adverbs of frequency, adverbs of place, adverbs of degree.

Adverbs of manner describe how or the way in which something happens or is done. This type of adverb is often the first type taught to students. Many of these end with -ly . Some common examples include happily , quickly , sadly , slowly , and fast .

Here are a few taster sentences employing adverbs of manner:

• She cooks Chinese food well .
• The children played happily together.
• The students worked diligently on their projects.
• Her mother taught her to cross the road carefully .
• The date went badly .

Adverbs of time indicate when something happens. Common adverbs of time include before , now , then , after , already , immediately , and soon .

Here are some sentences employing adverbs of time:

• I go to school early on Wednesdays.
• She would like to finish her studies eventually .
• Recently , Sarah moved to Bulgaria.
• I have already finished my homework.
• They have been missing training lately .

While adverbs of time deal with when something happens, adverbs of frequency are concerned with how often something happens. Common adverbs of frequency include always , frequently , sometimes , seldom , and never .

Here’s what they look like in sentences:

• Harry usually goes to bed around ten.
• Rachel rarely eats breakfast in the morning.
• Often , I’ll go home straight after school.
• I occasionally have ketchup on my pizza.
• She seldom goes out with her friends.

Adverbs of place, as the name suggests, describe where something happens or where it is. They can refer to position, distance, or direction. Some common adverbs of place include above , below , beside , inside , and anywhere .

Check out some examples in the sentences below:

• Underneath the bridge, there lived a troll.
• There were pizzerias everywhere in the city.
• We walked around the park in the pouring rain.
• If the door is open, then go inside .
• When I am older, I would like to live nearby .

Adverbs of degree express the degree to which or how much of something is done. They can also be used to describe levels of intensity. Some common adverbs of degree include barely , little , lots , completely , and entirely .

Here are some adverbs of degree at work in sentences:

• I hardly noticed her when she walked into the room.
• The little girl had almost finished her homework.
• The job was completely finished.
• I was so delighted to hear the good news.
• Jack was totally delighted to see Diane after all these years.

Adverb Teaching Activity: The Adverb Generator

• Give students a worksheet containing a table divided into five columns. Each column bears a heading of one of the different types of adverbs ( manner , time , frequency , place , degree ).
• Challenge each group to generate as many different examples of each adverb type and record these in the table.
• The winning group is the one with the most adverbs. As a bonus, or tiebreaker, task the students to make sentences with some of the adverbs.

Pronouns are used in place of a specific noun used earlier in a sentence. They are helpful when the writer wants to avoid repetitive use of a particular noun such as a name. For example, in the following sentences, the pronoun she is used to stand for the girl’s name Mary after it is used in the first sentence. 

Mary loved traveling. She had been to France, Thailand, and Taiwan already, but her favorite place in the world was Australia. She had never seen an animal quite as curious-looking as the duck-billed platypus.

We also see her used in place of Mary’s in the above passage. There are many different pronouns and, in this article, we’ll take a look at:

Subject Pronouns

Object pronouns, possessive pronouns, reflexive pronouns, intensive pronouns, demonstrative pronouns, interrogative pronouns.

Subject pronouns are the type of pronoun most of us think of when we hear the term pronoun . They operate as the subject of a verb in a sentence. They are also known as personal pronouns.

The subject pronouns are:

Here are a few examples of subject pronouns doing what they do best:

• Sarah and I went to the movies last Thursday night.
• That is my pet dog. It is an Irish Wolfhound.
• My friends are coming over tonight, they will be here at seven.
• We won’t all fit into the same car.
• You have done a fantastic job with your grammar homework!

Object pronouns operate as the object of a verb, or a preposition, in a sentence. They act in the same way as object nouns but are used when it is clear what the object is.

The object pronouns are:

Here are a few examples of object pronouns in sentences:

• I told you , this is a great opportunity for you .
• Give her some more time, please.
• I told her I did not want to do it .
• That is for us .
• Catherine is the girl whom I mentioned in my letter.

Possessive pronouns indicate ownership of a noun. For example, in the sentence:

These books are mine .

The word mine stands for my books . It’s important to note that while possessive pronouns look similar to possessive adjectives, their function in a sentence is different.

The possessive pronouns are:

Let’s take a look at how these are used in sentences:

• Yours is the yellow jacket.
• I hope this ticket is mine .
• The train that leaves at midnight is theirs .
• Ours is the first house on the right.
• She is the person whose opinion I value most.
• I believe that is his .

Reflexive pronouns are used in instances where the object and the subject are the same. For example, in the sentence, she did it herself , the words she and herself refer to the same person.

The reflexive pronoun forms are:

Here are a few more examples of reflexive pronouns at work:

• I told myself that numerous times.
• He got himself a new computer with his wages.
• We will go there ourselves .
• You must do it yourself .
• The only thing to fear is fear itself .

This type of pronoun can be used to indicate emphasis. For example, when we write, I spoke to the manager herself , the point is made that we talked to the person in charge and not someone lower down the hierarchy. 

Similar to the reflexive pronouns above, we can easily differentiate between reflexive and intensive pronouns by asking if the pronoun is essential to the sentence’s meaning. If it isn’t, then it is used solely for emphasis, and therefore, it’s an intensive rather than a reflexive pronoun.

Often confused with demonstrative adjectives, demonstrative pronouns can stand alone in a sentence.

When this , that , these , and those are used as demonstrative adjectives they come before the noun they modify. When these same words are used as demonstrative pronouns, they replace a noun rather than modify it.

Here are some examples of demonstrative pronouns in sentences:

• This is delicious.
• That is the most beautiful thing I have ever seen.
• These are not mine.
• Those belong to the driver.

Interrogative pronouns are used to form questions. They are the typical question words that come at the start of questions, with a question mark coming at the end. The interrogative pronouns are:

Putting them into sentences looks like this:

• What is the name of your best friend?
• Which of these is your favourite?
• Who goes to the market with you?
• Whom do you think will win?
• Whose is that?

Pronoun Teaching Activity: Pronoun Review Table

• Provide students with a review table like the one below to revise the various pronoun forms.
• They can use this table to help them produce independent sentences.
• Once students have had a chance to familiarize themselves thoroughly with each of the different types of pronouns, provide the students with the headings and ask them to complete a table from memory.  

Prepositions

Prepositions provide extra information showing the relationship between a noun or pronoun and another part of a sentence. These are usually short words that come directly before nouns or pronouns, e.g., in , at , on , etc.

There are, of course, many different types of prepositions, each relating to particular types of information. In this article, we will look at:

Prepositions of Time

Prepositions of place, prepositions of movement, prepositions of manner, prepositions of measure.

• Preposition of Agency
• Preposition of Possession
• Preposition of Source

Phrasal Prepositions

It’s worth noting that several prepositional words make an appearance in several different categories of prepositions.

Prepositions of time indicate when something happens. Common prepositions of time include after , at , before , during , in , on .

Let’s see some of these at work:

• I have been here since Thursday.
• My daughter was born on the first of September.
• He went overseas during the war.
• Before you go, can you pay the bill, please?
• We will go out after work.

Sometimes students have difficulty knowing when to use in , on , or at . These little words are often confused. The table below provides helpful guidance to help students use the right preposition in the right context.

The prepositions of place, in , at , on , will be instantly recognisable as they also double as prepositions of time. Again, students can sometimes struggle a little to select the correct one for the situation they are describing. Some guidelines can be helpful.

• If something is contained or confined inside, we use in .
• If something is placed upon a surface, we use on .
• If something is located at a specific point, we use at .

A few example sentences will assist in illustrating these:

• He is in the house.
• I saw it in a magazine.
• In France, we saw many great works of art.
• Put it on the table.
• We sailed on the river.
• Hang that picture on the wall, please.
• We arrived at the airport just after 1 pm.
• I saw her at university.
• The boy stood at the window.

Usually used with verbs of motion, prepositions of movement indicate movement from one place to another. The most commonly used preposition of movement is to .

Some other prepositions of movement include:

Here’s how they look in some sample sentences:

• The ball rolled across the table towards me.
• We looked up into the sky.
• The children ran past the shop on their way home.
• Jackie ran down the road to greet her friend.
• She walked confidently through the curtains and out onto the stage.

Preposition of manner shows us how something is done or how it happens. The most common of these are by , in , like , on , with .

Let’s take a look at how they work in sentences:

• We went to school by bus.
• During the holidays, they traveled across the Rockies on foot.
• Janet went to the airport in a taxi.
• She played soccer like a professional.
• I greeted her with a smile.

Prepositions of measure are used to indicate quantities and specific units of measurement. The two most common of these are by and of .

Check out these sample sentences:

• I’m afraid we only sell that fabric by the meter.
• I will pay you by the hour.
• She only ate half of the ice cream. I ate the other half.
• A kilogram of apples is the same weight as a kilogram of feathers.

Prepositions of Agency

These prepositions indicate the causal relationship between a noun or pronoun and an action. They show the cause of something happening. The most commonly used prepositions of agency are by and with .

Here are some examples of their use in sentences:

• The Harry Potter series was written by J.K. Rowling.
• This bowl was made by a skilled craftsman.
• His heart was filled with love.
• The glass was filled with water.

Prepositions of Possession

Prepositions of possessions indicate who or what something belongs to. The most common of these are of , to , and with .

Let’s take a look:

• He is the husband of my cousin.
• He is a friend of the mayor.
• This once belonged to my grandmother.
• All these lands belong to the Ministry.
• The man with the hat is waiting outside.
• The boy with the big feet tripped and fell.

Prepositions of Source

Prepositions of source indicate where something comes from or its origins. The two most common prepositions of source are from and by . There is some crossover here with prepositions of agency.

Here are some examples:

• He comes from New Zealand.
• These oranges are from our own orchard.
• I was warmed by the heat of the fire.
• She was hugged by her husband.
• The yoghurt is of Bulgarian origin.

Phrasal prepositions are also known as compound prepositions. These are phrases of two or more words that function in the same way as prepositions. That is, they join nouns or pronouns to the rest of the sentence.

Some common phrasal prepositions are:

• According to
• For a change
• In addition to
• In spite of
• Rather than
• With the exception of

Students should be careful of overusing phrasal prepositions as some of them can seem clichéd. Frequently, it’s best to say things in as few words as is necessary.

Preposition Teaching Activity: Pr eposition Sort

• Print out a selection of the different types of prepositions on pieces of paper.
• Organize students into smaller working groups and provide each group with a set of prepositions.
• Using the headings above as categories, challenge students to sort the prepositions into the correct groups. Note that some prepositions will comfortably fit into more than one group.
• The winning group is the one to sort all prepositions correctly first.
• As an extension exercise, students can select a preposition from each category and write a sample sentence for it.

ConjunctionS

Conjunctions are used to connect words, phrases, and clauses. There are three main types of conjunction that are used to join different parts of sentences. These are:

• Coordinating
• Subordinating
• Correlative

Coordinating Conjunctions

These conjunctions are used to join sentence components that are equal such as two words, two phrases, or two clauses. In English, there are seven of these that can be memorized using the mnemonic FANBOYS:

Here are a few example sentences employing coordinating conjunctions:

• As a writer, he needed only a pen and paper.
• I would describe him as strong but lazy.
• Either we go now or not at all.

Subordinating Conjunctions

Subordinating conjunctions are used to introduce dependent clauses in sentences. Basically, dependent clauses are parts of sentences that cannot stand as complete sentences on their own. 

Some of the most common subordinate conjunctions are: 

Let’s take a look at some example sentences:

• I will complete it by Tuesday if I have time.
• Although she likes it, she won’t buy it.
• Jack will give it to you after he finds it.

Correlative Conjunctions

Correlative conjunctions are like shoes; they come in pairs. They work together to make sentences work. Some come correlative conjunctions are:

• either / or
• neither / nor
• Not only / but also

Let’s see how some of these work together:

• If I were you, I would get either the green one or the yellow one.
• John wants neither pity nor help.
• I don’t know whether you prefer horror or romantic movies.

Conjunction Teaching Activity: Conjunction Challenge

• Organize students into Talking Pairs .
• Partner A gives Partner B an example of a conjunction.
• Partner B must state which type of conjunction it is, e.g. coordinating, subordinating, or correlative.
• Partner B must then compose a sentence that uses the conjunction correctly and tell it to Partner A.
• Partners then swap roles.

InterjectionS

Interjections focus on feelings and are generally grammatically unrelated to the rest of the sentence or sentences around them. They convey thoughts and feelings and are common in our speech. They are often followed by exclamation marks in writing. Interjections include expressions such as:

• Eww! That is so gross!
• Oh , I don’t know. I’ve never used one before.
• That’s very… err …generous of you, I suppose.
• Wow! That is fantastic news!
• Uh-Oh! I don’t have any more left.

Interjection Teaching Activity: Create a scenario

• Once students clearly understand what interjections are, brainstorm as a class as many as possible.
• Write a master list of interjections on the whiteboard.
• Partner A suggests an interjection word or phrase to Partner B.
• Partner B must create a fictional scenario where this interjection would be used appropriately.

With a good grasp of the fundamentals of parts of speech, your students will now be equipped to do a deeper dive into the wild waters of English grammar. 

To learn more about the twists and turns of English grammar, check out our comprehensive article on English grammar here.

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Parts of Speech for Hypothesis

Gramatical hierarchy.

• Plural form
• Variable noun

Grammatically "Hypothesis" is a noun, to be more precise even a variable noun. But also it is used as a , specifically a variable noun. Part of speech depends on meaning of this word.

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Campus protests over the Gaza war

House passes bill aimed to combat antisemitism amid college unrest.

Barbara Sprunt

Speaker of the House Mike Johnson visited Columbia University on April 24 to meet with Jewish students and make remarks about concerns that the ongoing demonstrations have become antisemitic. Alex Kent/Getty Images hide caption

Speaker of the House Mike Johnson visited Columbia University on April 24 to meet with Jewish students and make remarks about concerns that the ongoing demonstrations have become antisemitic.

The House of Representatives passed a bill on Wednesday aimed at addressing reports of rising antisemitism on college campuses, where activists angered by Israel's war against Hamas have been protesting for months and more recently set up encampments on campus grounds .

The Antisemitism Awareness Act would see the adoption of the International Holocaust Remembrance Alliance's definition of antisemitism for the enforcement of federal anti-discrimination laws regarding education programs.

The bill passed with a 320-91 vote. Seventy Democrats and 21 Republicans voted against the measure.

The international group defines antisemitism as "a certain perception of Jews, which may be expressed as hatred toward Jews" and gives examples of the definition's application, which includes "accusing Jews as a people of being responsible for real or imagine wrongdoing committed by a single Jewish person or group" and making " dehumanizing, demonizing, or stereotypical allegations about Jews as such or the power of Jews as collective."

Rep. Mike Lawler, R-N.Y., introduced the legislation.

"Right now, without a clear definition of antisemitism, the Department of Education and college administrators are having trouble discerning whether conduct is antisemitic or not, whether the activity we're seeing crosses the line into antisemitic harassment," he said on the House floor before passage.

The bill goes further than an executive order former President Donald Trump signed in 2019 . Opponents argue the measure could restrict free speech.

"This definition adopted by the International Holocaust Remembrance Alliance includes 'contemporary examples of antisemitism'," said Rep. Jerry Nadler in a speech on the House floor ahead of the vote. "The problem is that these examples may include protected speech in some context, particularly with respect to criticism of the state of Israel."

Fellow New York Democrat Rep. Ritchie Torres , one of the 15 Democratic cosponsors of the bill, told NPR he finds that argument unconvincing.

"There's a false narrative that the definition censors criticism of the Israeli government. I consider it complete nonsense," Torres said in an interview with NPR.

"If you can figure out how to critique the policies and practices of the Israeli government without calling for the destruction of Israel itself, then no reasonable person would ever accuse you of antisemitism," he added.

Issue should 'transcend partisan politics'

While members of both parties have criticized reports of antisemitism at the protests, Republicans have made the issue a central political focus.

House Speaker Mike Johnson made a rare visit last week to Columbia University, where demonstrators were demanding the school divest from companies that operate in Israel. Johnson and a handful of GOP lawmakers met with a group of Jewish students.

"They are really concerned that their voices are not being heard when they may complain about being assaulted, being spit on, being told that all Jews should die — and they are not getting any response from the individuals who are literally being paid to protect them," Rep. Anthony D'Esposito, R-N.Y., told NPR of the meeting.

On Tuesday, Johnson held a press conference focused on antisemitism with a group of House Republicans at the U.S. Capitol.

"Antisemitism is a virus and it will spread if it's not stamped out," Johnson said. "We have to act, and House Republicans will speak to this fateful moment with moral clarity."

Rep. Pramila Jayapal, D-Wash., who chairs the House progressive caucus, says Republicans are playing politics.

"Many of these Republicans didn't say a word when Trump and others in Charlottesville and other places were saying truly antisemitic things. But all of a sudden now they want to bring forward bills that divide Democrats and weaponize this," she said.

Torres said he wished Johnson had done a bipartisan event with House Democrats to "present a united front."

"You know, it's impossible to take the politics out of politics, but the fight against all forms of hate, including antisemitism, should transcend partisan politics," he said.

Student protestors chant near an entrance to Columbia University on April 30. Columbia University has restricted access to the school's campus to students residing in residential buildings on campus and employees who provide essential services to campus buildings after protestors took over Hamilton Hall overnight. Michael M. Santiago/Getty Images hide caption

Student protestors chant near an entrance to Columbia University on April 30. Columbia University has restricted access to the school's campus to students residing in residential buildings on campus and employees who provide essential services to campus buildings after protestors took over Hamilton Hall overnight.

Jewish students speak about feeling harassed

Hear from students who met with speaker johnson.

There was increased urgency to move legislation to the floor after lawmakers started hearing stories of Jewish students feeling unwelcome on campuses.

Eliana Goldin, a junior at Columbia and the Jewish Theological Seminary, said the escalation of protests on and around her campus have made her feel unsafe.

"I know many, many people who have been harassed because they wear a Jewish star necklace," Goldin told NPR. Goldin was one student who received a message from Rabbi Elie Buechler of Columbia a week ago.

"The events of the last few days...have made it clear that Columbia University's Public Safety and the NYPD cannot guarantee Jewish students' safety in the face of extreme antisemitism and anarchy," the message read. "It deeply pains me to say that I would strongly recommend you return home as soon as possible and remain home until the reality in and around campus has dramatically improved."

Demonstrators say their protest is peaceful and that some of the antisemitic events that have garnered national attention have come from people outside of the university.

Goldin said she was part of an interaction that got a lot of online attention of someone yelling at her and others to "go back to Poland." She said she was disappointed in the reaction from the broader Columbia community, even though the person was likely not a student.

"I do think if someone were to say, 'go back to Africa' to a Black student, it would one, be abhorrent," Goldin said. "And correctly, the entire Columbia student body would feel outraged at that, and we would all be able to rally around it. But of course, when someone says 'go back to Poland' to a Jew, we don't feel the same outrage and the same unity against that."

Torres said lawmakers should listen to students like Goldin.

"If there are Black students, who claim to experience racism, we rightly respect their experiences. The same would be true of Latino students, the same would be true of Asian students," he said. "If there are Jewish students who are telling us that they do not feel safe, why are we questioning the validity of their experiences? Why are we not affording them the sensitivity that we would have for every other group?"

Columbia University did not respond to NPR about questions about their handling of the protests.

A demonstrator breaks the windows of the front door of the building in order to secure a chain around it to prevent authorities from entering as demonstrators from the pro-Palestine encampment barricade themselves inside Hamilton Hall, an academic building at Columbia University, on April 30. Alex Kent/Getty Images hide caption

A demonstrator breaks the windows of the front door of the building in order to secure a chain around it to prevent authorities from entering as demonstrators from the pro-Palestine encampment barricade themselves inside Hamilton Hall, an academic building at Columbia University, on April 30.

'It just really kind of erodes the soul'

Xavier Westergaard, a Ph.D. student at Columbia, attended the meeting between the House GOP delegation and Jewish students.

"The mood in the room was relief that someone so high up in the government made this a priority," he said, referring to Johnson.

"Jewish students, including myself, have been the victims of physical violence and intimidation. This goes from shoving, spitting, being told to go back to Europe," he said. "It just really kind of erodes the soul if you hear it too many times."

He added: "And this is not just happening outside the gates, on the sidewalk where anyone from anywhere can come and demonstrate. We do have the First Amendment in this country. This was actually on campus. The university has responsibilities to protect their students from harassment on the basis of religion or creed or national origin."

A consistent refrain among protesters is that criticizing the policies of the Israeli government doesn't equate to antisemitism.

Westergaard agrees, but says that's not what he's experiencing.

"I've heard, 'We want all Zionists off campus.' I've heard 'death to the Zionist state, death to Zionists.' And as a Jew, I feel that Zionism and Judaism can be teased apart with a tremendous amount of care and compassion and knowledge," he said. "But it's also just a dog whistle that people use when they're talking about the Jews."

Juliana Castillo, an undergraduate, was also at the meeting with Johnson. She said calls for the safety of students doesn't just include physical well-being.

"There are things like intimidation, like feeling uncomfortable being openly Jewish or taking a direct route across campus," she said. "It doesn't always manifest as a lack of physical safety. Sometimes it manifests as being unwelcome in a class or feeling like people's viewpoints or perspectives are not respected."

She said even isolated incidents of antisemitism that get circulated widely online have a "creeping impact on people."

"Just knowing that something has happened to your friends, or to people you know in a place you're familiar with, makes it difficult to have a sense that this is your campus," she said. "These things do build up."

Bipartisan push on more bills to counter antisemitism

Lawmakers say this bill is just one step — and that there's more action the chamber should take to combat antisemitism.

Torres and Lawler have introduced another bill that would place a monitor on a campus to report back to the federal government on whether the university is complying with Title VI , which prohibits discrimination based on race, color or national origin in places like colleges that receive federal funding.

"A law is only as effective as its enforcement, and the purpose here is to provide an enforcement mechanism where none exist," Torres said. "And I want to be clear: the legislation would empower the federal Department of Education not to impose a monitor on every college or university, only when there's reason to suspect a violation of Title VI."

Meanwhile, House Minority Leader Hakeem Jeffries is urging Johnson to bring the bipartisan Countering Antisemitism Act to the floor.

"The effort to crush antisemitism and hatred in any form is not a Democratic or Republican issue" said Jeffries in a statement.

Letter to Speaker Mike Johnson on the Bipartisan Countering Antisemitism Act. pic.twitter.com/z3weUD54zm — Hakeem Jeffries (@RepJeffries) April 29, 2024

The bill would establish a senior official in the Department of Education to monitor for antisemitism on college campuses and create a national coordinator in the White House to oversee a new interagency task force to counter antisemitism.

"We have negotiated that bill for nine months. It is bipartisan. It's bicameral," said North Carolina Democrat Kathy Manning, who co-chairs the House Bipartisan Task Force for Combating Antisemitism.

Manning was part of a trio of House Democrats who visited Columbia University last week to hear from Jewish students.

Manning points to a study from the American Jewish Committee that found that 46% of American Jews since October 7 say they have altered their behavior out of fear of antisemitism .

"I find that deeply disturbing, that in the United States of America, people are now afraid to be recognized in public as being Jewish," Manning said.

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Campus protest crackdowns claim to be about antisemitism – but they’re part of a rightwing plan

Accusations of antisemitism are the tip of the spear in a frightening illiberal project serving an autocratic agenda

S ince 7 October, commentators have been ringing the alarm that a growing protest movement in solidarity with Palestine signals not just the end of a “golden age” for American Jews – as Franklin Foer recently put it in the Atlantic – but for American liberal democracy itself.

As Foer wrote, the “surge of antisemitism is a symptom of the decay of democratic habits, a leading indicator of rising authoritarianism”. Writing before the start of the encampments, he noted that Columbia was “a graphic example of the collapse of the liberalism that had insulated American Jews: it is a microcosm of a society that has lost its capacity to express disagreements without resorting to animus”. Meanwhile, on CNN, the anchor Dana Bash invoked 1930s Europe – “and I do not say that lightly … the fear among American Jews is palpable right now”.

There is no doubt that many Jewish students – especially those raised to believe that their Jewish identity is indivisible from the political ideology of Zionism – feel uncomfortable, or that many of them feel ostracized by their peers. But their discomfort has justified a powerful attack on academic freedom and first amendment rights that long predates the student encampments – part of a longstanding rightwing project to curb speech and reshape the public sphere.

Foer and Bash are right that American democracy is imperiled. But as the draconian crackdown on non-violent student protests makes clear, accusations of antisemitism are not themselves evidence of liberal decline, but rather the tip of the spear in a frightening illiberal project serving the agenda of an emboldened, autocratic right wing.

T he months since 7 October have seen shocking attacks on freedom of expression and assembly on campus. Even before the stunning display of police brutality in recent weeks, campuses have been home to canceled speakers and events , arbitrary disciplinary hearings , and outright censorship . The University of Southern California has canceled its entire commencement ceremony rather than let its valedictorian, Asna Tabassum, deliver a message of Palestine solidarity in her speech. Universities have suspended chapters of Students for Justice in Palestine (SJP) and Jewish Voice for Peace , in decisions that PEN America has said are “united by a degree of opacity, in that university leaders have not been fully forthcoming in delineating how these student groups broke campus rules, or how the decision to suspend them was reached”.

These curtailments of civil liberties, enacted in the service of “protecting Jewish students”, are not now and will not be confined to Palestine-related speech. The recent history of suppression of Palestine activism suggests that tactics employed by legislatures, universities, and other institutions will soon pop up elsewhere.

Anti-boycott laws – targeting the non-violent tactic of boycott when applied to the state of Israel – exist in 38 states, under the argument that such boycotts constitute antisemitism. In the past few years, this tactic has spread to protect other causes beloved by the right. Now, several states have laws on the books that prohibit the government from doing business with groups or individuals who are boycotting fossil fuels or the gun industry. “They’re shrinking the space for public debate and action on some of the most important issues of our time,” Meera Shah, a senior staff attorney at Palestine Legal, told Jewish Currents in 2022, underscoring why “it’s so dangerous to permit this kind of Palestine exception to speech”.

The pro-Palestine movement has also provided cover for the right to expand its attack on protest – a project advanced significantly after the Black Lives Matter protests in 2020. Building on laws that allow motorists to hit protesters with their cars, and bar convicted protesters from holding state employment or receiving public benefits, GOP lawmakers have introduced new legislation pinned to the wave of pro-Palestine protests since 7 October. In March, Senator Tom Cotton introduced the “Stop Pro-Terrorist Riots Now Act”, to “crack down on pro-Hamas riots”, increasing punishments for rioting and providing mandatory sentences for anyone committing violence as part of a riot. Senators Marsha Blackburn and Thom Tillis have introduced legislation making it a federal crime to block roads or highways, a move they said was in “direct response to radical tactics of pro-Palestinian protesters who have intentionally blocked roads and highways across the country”.

In a tactic familiar from the post-9/11 landscape , GOP lawmakers and civil society leaders from groups like the ADL and the Brandeis Center have endeavored to paint student protesters and groups as “terrorists”. This is bad news for activists across the country: a 2024 report by the Center for Constitutional Rights details how “core features” of US antiterrorism law, “driven by anti-Palestinian agendas”, were “expanded and ‘brought home’ to repress other protest movements”, including the Black Lives Matter movement and the protests against the “Cop City” Atlanta police training center. As early as next week, the Senate could vote on a bill designed to penalize criticism of Israel by suspending tax-exempt status for “terrorist supporting organizations” – which Lara Friedman, president of the Foundation for Middle East Peace, said would “dispense with the due process” and empower “a single US official to act as prosecutor, judge, jury, and executioner of [American] orgs whose viewpoints that official disagrees with”.

Of course, some student groups have adopted inflammatory rhetoric, reminiscent of some anti-Vietnam war campus protesters’ adoption of the Viet Cong flag . Many observers have referenced a toolkit released by National SJP in the days after 7 October affirming their support for armed struggle. But these are political opinions that constitute protected political speech. “Students’ independent political rhetoric is not material support for terrorism,” Hina Shamsi, director of the National Security Project at the American Civil Liberties Union (ACLU), told Jewish Currents in November. “A blanket call to investigate every chapter of a pro-Palestinian student group for material support – without even an attempt to cite evidence – is unwarranted, wrong, and dangerous.”

Alongside this effort to tar protest as terrorism, the right is seizing on the emotions inflamed by Israel’s war to make headway in a longstanding offensive on education. Over the past several years, the GOP has sought to meddle in the academic freedom of universities, which they allege are indoctrinating students into “woke”, leftwing ideology. This is perhaps most dramatic in Florida, where, in a bid to control access to history and information, Governor Ron DeSantis has all but remade the public liberal arts college New College in his image , and has introduced the Stop Woke Act, curtailing what teachers can teach on topics of race and gender. Republicans have also taken aim nationally at diversity, equity, and inclusion (DEI) initiatives, introducing more than 30 bills targeting DEI funding, practices, and promotion at schools. Nine have been signed into law – efforts that the ACLU says “represent yet another attempt to re-whitewash America’s history of racial subjugation, and to reverse efforts to pursue racial justice”.

The moral panic around antisemitism has been a useful vehicle to further the campaign against DEI, as congressional hearings on antisemitism since 7 Octoberhave made clear. “Evidence shows that campus DEI bureaucracies play a major role in propagating the spread of antisemitism,” said the US representative Burgess Owens at a November hearing . “It is a dirty little secret at the heart to DEI.”

Though these attacks on academic freedom and free speech on campus have been spearheaded by the right wing, under the guise of “fighting antisemitism”, Democrats are playing along. Last week, a bipartisan House vote affirmed the Antisemitism Awareness Act , which would codify the controversial International Holocaust Remembrace Alliance (IHRA) definition of antisemitism for the purpose of campus harassment investigations. According to the ACLU , the adoption of this “overbroad” definition “could result in colleges and universities suppressing a wide variety of speech critical of Israel or in support of Palestinian rights in an effort to avoid investigations by the Department [of Education] and the potential loss of funding.” At the City University of New York (Cuny), faculty have been whispering for months about how the Democratic governor Kathy Hochul’s independent review into the school’s policies on antisemitism and discrimination has chilled speech and could feed calls to defund Cuny from Republican lawmakers at the state and federal level. This effort to defund higher education is part of a broader GOP plan to punish universities, as the Republican US representative Jim Banks admitted in a Zoom call with business leaders leaked to CNBC . “The hearing was the first step,” he said, in reference to the congressional hearings grilling college presidents about antisemitism allegations on their campuses.

Private universities will not be immune from these repressive headwinds, if the April testimony of Columbia’s president, Minouche Shafik, before Congress was any indication. Rather than stand up for academic freedom, Shafik obliged GOP lawmakers ’ agendas, suggesting she would meddle in departmental appointments, investigate and punish protected speech, and cordon off protest, all in the name of protecting Jewish students. A day later, she invited police to Columbia’s campus to arrest more than 100 students who had been peacefully protesting.

To be clear, all of the most serious violent attacks since October have been on Palestinians and their supporters. In Chicago, a six-year-old Palestinian American was killed and his mother injured in a stabbing attack by their landlord. In Vermont, three Palestinian students were shot while wearing keffiyehs and speaking Arabic; one is permanently paralyzed . At Stanford, an Arab Muslim student was targeted in a hit-and-run after a Palestine solidarity protest. Just this week, a cousin of the extremist Jewish leader Meir Kahane allegedly rammed protesters with his car outside the home of a Columbia trustee. And last week at UCLA, 25 students were hospitalized after an attack by a Zionist mob with wooden planks, fireworks, and pepper spray.

Yet there is no discourse in Washington suggesting that Palestinians are unsafe in the United States, or that pro-Israel supporters are “genocidal” – and no comparable rush to legislate.

Liberals, particularly older ones, have long scolded college students for their illiberalism, their “safe spaces”, and their low tolerance for discomfort and disagreement. But to watch the full-throated support for the violent repression of student activism resounding in the media, in university administrations, and at every level of government these past several weeks is to witness an astounding repudiation of our civil liberties on account of their discomfort. It’s worth remembering that the Vietnam anti-war protests were also unpopular at the time – three-quarters of the American public opposed them, and the country elected a racist, criminal president, Richard Nixon, in part to restore “law and order” .

Liberals know there is an autocratic strain spreading across this country – they identify it in Trump’s efforts to steal the election, or DeSantis’s attacks on history. Come November, Trump could return to office, and the erosions in our civil liberties we have written into law and practice in these months will be there for his use. But it’s worth remembering that the crackdowns on our first amendment rights over the last several weeks have happened under a Democratic president, in defense of a US-funded war that enjoys bipartisan support in Congress, if not among a changing Democratic party base.

As the White House repeatedly accuses the students of antisemitism, in a tacit endorsement of the police swarming university campuses, it’s worth taking the students’ word for why they’re there in the first place: Biden’s disastrous foreign policy , in which every opportunity for Israeli accountability has been spurned, has turned Gaza into a mass grave – off the charts compared with any other contemporary conflict by every metric – and brought the entire Middle East to the brink of all-out regional war.

I believe history will vindicate these students and their call for Palestinian liberation and an end to US complicity in a brutal, futile Israeli war. But even if you disagree, it’s clear that protecting them is also an investment in the protection of our fundamental liberties.

Arielle Angel is the editor-in-chief of Jewish Currents

• US campus protests
• Antisemitism
• Israel-Gaza war

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Justice Alito warns of declining support for freedom of speech on college campuses

Conservative Supreme Court Justice Samuel Alito on Saturday warned that support for freedom of speech is "declining dangerously," especially on college campuses, as part of a commencement address he delivered at the Franciscan University of Steubenville, a Catholic college in Ohio.

His remarks appeared to reference unrest at various college campuses around the country arising from protests against Israel's military operations in Gaza.

“Right now in the world outside this beautiful campus, troubled waters are slamming against some of our most fundamental principles," Alito said.

"Support for freedom of speech is declining dangerously," he added, especially on college campuses, where the exchange of ideas should be most protected.

"Very few colleges live up to that ideal. This place is one of them … but things are not that way out there in the broader world," Alito said.

But Alito's support for free speech has its limits — he was a notable sole dissenter when the Supreme Court in 2011 ruled 8-1 that members of the conservative Westboro Baptist Church had a free speech right to picket the funeral of a military veteran.

"Our profound national commitment to free and open debate is not a license for the vicious verbal assault that occurred in this case," he wrote in dissent.

Alito, who is Catholic, has frequently raised the alarm about freedom of religion being under attack and has often voted in favor of expanding religious rights.

"Freedom of religion is also imperiled," he told the graduating students. "When you venture out into the world, you may well find yourself in a job, or community or a social setting when you will be pressured to endorse ideas you don’t believe, or to abandon core beliefs. It will be up to you to stand firm."

The Supreme Court is poised in the coming weeks to issue major rulings on a series of contentious issues including abortion, gun rights and whether former President Donald Trump is immune from prosecution for his attempts to overturn the results of the 2020 election.

Alito, the author of the 2022 ruling that overturned the landmark Roe v. Wade, is one of several justices making public appearances while the court prepares its rulings.

On Friday, fellow conservative Justice Clarence Thomas spoke at a judicial conference in Alabama, where he decried the "nastiness and the lies" he has faced.

He and his wife, conservative political activist Ginni Thomas, have both been in the spotlight in recent years. He has been accused of failing to follow ethics rules, while she was criticized for backing Trump's effort to challenge election results.

At another judicial conference in Texas, conservative Justice Brett Kavanaugh said Friday that Supreme Court rulings that are unpopular when issued can later become part of the "fabric of American constitutional law."

Lawrence Hurley covers the Supreme Court for NBC News.