assignment synthesis literature review

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• Lit Review Prep Use this template to help you evaluate your sources, create article summaries for an annotated bibliography, and a synthesis matrix for your lit review outline.

Synthesize your Information

Synthesize: combine separate elements to form a whole.

Synthesis Matrix

A synthesis matrix helps you record the main points of each source and document how sources relate to each other.

After summarizing and evaluating your sources, arrange them in a matrix or use a citation manager to help you see how they relate to each other and apply to each of your themes or variables.  

By arranging your sources by theme or variable, you can see how your sources relate to each other, and can start thinking about how you weave them together to create a narrative.

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How to Write a Literature Review

• 6. Synthesize
• Literature Reviews: A Recap
• Reading Journal Articles
• Does it Describe a Literature Review?
• 1. Identify the Question
• 2. Review Discipline Styles
• Searching Article Databases
• Finding Full-Text of an Article
• Citation Chaining
• When to Stop Searching
• 4. Manage Your References
• 5. Critically Analyze and Evaluate

Synthesis Visualization

Synthesis matrix example.

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• Synthesis Worksheet

About Synthesis

Approaches to synthesis.

You can sort the literature in various ways, for example:

How to Begin?

Read your sources carefully and find the main idea(s) of each source

Look for similarities in your sources – which sources are talking about the same main ideas? (for example, sources that discuss the historical background on your topic)

Use the worksheet (above) or synthesis matrix (below) to get organized

This work can be messy. Don't worry if you have to go through a few iterations of the worksheet or matrix as you work on your lit review!

Four Examples of Student Writing

In the four examples below, only ONE shows a good example of synthesis: the fourth column, or  Student D . For a web accessible version, click the link below the image.

Long description of "Four Examples of Student Writing" for web accessibility

• Download a copy of the "Four Examples of Student Writing" chart

Click on the example to view the pdf.

From Jennifer Lim

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Writing a Literature Review

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A literature review is a document or section of a document that collects key sources on a topic and discusses those sources in conversation with each other (also called synthesis ). The lit review is an important genre in many disciplines, not just literature (i.e., the study of works of literature such as novels and plays). When we say “literature review” or refer to “the literature,” we are talking about the research ( scholarship ) in a given field. You will often see the terms “the research,” “the scholarship,” and “the literature” used mostly interchangeably.

Where, when, and why would I write a lit review?

There are a number of different situations where you might write a literature review, each with slightly different expectations; different disciplines, too, have field-specific expectations for what a literature review is and does. For instance, in the humanities, authors might include more overt argumentation and interpretation of source material in their literature reviews, whereas in the sciences, authors are more likely to report study designs and results in their literature reviews; these differences reflect these disciplines’ purposes and conventions in scholarship. You should always look at examples from your own discipline and talk to professors or mentors in your field to be sure you understand your discipline’s conventions, for literature reviews as well as for any other genre.

A literature review can be a part of a research paper or scholarly article, usually falling after the introduction and before the research methods sections. In these cases, the lit review just needs to cover scholarship that is important to the issue you are writing about; sometimes it will also cover key sources that informed your research methodology.

Lit reviews can also be standalone pieces, either as assignments in a class or as publications. In a class, a lit review may be assigned to help students familiarize themselves with a topic and with scholarship in their field, get an idea of the other researchers working on the topic they’re interested in, find gaps in existing research in order to propose new projects, and/or develop a theoretical framework and methodology for later research. As a publication, a lit review usually is meant to help make other scholars’ lives easier by collecting and summarizing, synthesizing, and analyzing existing research on a topic. This can be especially helpful for students or scholars getting into a new research area, or for directing an entire community of scholars toward questions that have not yet been answered.

What are the parts of a lit review?

Most lit reviews use a basic introduction-body-conclusion structure; if your lit review is part of a larger paper, the introduction and conclusion pieces may be just a few sentences while you focus most of your attention on the body. If your lit review is a standalone piece, the introduction and conclusion take up more space and give you a place to discuss your goals, research methods, and conclusions separately from where you discuss the literature itself.

Introduction:

• An introductory paragraph that explains what your working topic and thesis is
• A forecast of key topics or texts that will appear in the review
• Potentially, a description of how you found sources and how you analyzed them for inclusion and discussion in the review (more often found in published, standalone literature reviews than in lit review sections in an article or research paper)
• Summarize and synthesize: Give an overview of the main points of each source and combine them into a coherent whole
• Analyze and interpret: Don’t just paraphrase other researchers – add your own interpretations where possible, discussing the significance of findings in relation to the literature as a whole
• Critically Evaluate: Mention the strengths and weaknesses of your sources
• Write in well-structured paragraphs: Use transition words and topic sentence to draw connections, comparisons, and contrasts.

Conclusion:

• Summarize the key findings you have taken from the literature and emphasize their significance
• Connect it back to your primary research question

How should I organize my lit review?

Lit reviews can take many different organizational patterns depending on what you are trying to accomplish with the review. Here are some examples:

• Chronological : The simplest approach is to trace the development of the topic over time, which helps familiarize the audience with the topic (for instance if you are introducing something that is not commonly known in your field). If you choose this strategy, be careful to avoid simply listing and summarizing sources in order. Try to analyze the patterns, turning points, and key debates that have shaped the direction of the field. Give your interpretation of how and why certain developments occurred (as mentioned previously, this may not be appropriate in your discipline — check with a teacher or mentor if you’re unsure).
• Thematic : If you have found some recurring central themes that you will continue working with throughout your piece, you can organize your literature review into subsections that address different aspects of the topic. For example, if you are reviewing literature about women and religion, key themes can include the role of women in churches and the religious attitude towards women.
• Qualitative versus quantitative research
• Empirical versus theoretical scholarship
• Divide the research by sociological, historical, or cultural sources
• Theoretical : In many humanities articles, the literature review is the foundation for the theoretical framework. You can use it to discuss various theories, models, and definitions of key concepts. You can argue for the relevance of a specific theoretical approach or combine various theorical concepts to create a framework for your research.

What are some strategies or tips I can use while writing my lit review?

Any lit review is only as good as the research it discusses; make sure your sources are well-chosen and your research is thorough. Don’t be afraid to do more research if you discover a new thread as you’re writing. More info on the research process is available in our "Conducting Research" resources .

As you’re doing your research, create an annotated bibliography ( see our page on the this type of document ). Much of the information used in an annotated bibliography can be used also in a literature review, so you’ll be not only partially drafting your lit review as you research, but also developing your sense of the larger conversation going on among scholars, professionals, and any other stakeholders in your topic.

Usually you will need to synthesize research rather than just summarizing it. This means drawing connections between sources to create a picture of the scholarly conversation on a topic over time. Many student writers struggle to synthesize because they feel they don’t have anything to add to the scholars they are citing; here are some strategies to help you:

• It often helps to remember that the point of these kinds of syntheses is to show your readers how you understand your research, to help them read the rest of your paper.
• Writing teachers often say synthesis is like hosting a dinner party: imagine all your sources are together in a room, discussing your topic. What are they saying to each other?
• Look at the in-text citations in each paragraph. Are you citing just one source for each paragraph? This usually indicates summary only. When you have multiple sources cited in a paragraph, you are more likely to be synthesizing them (not always, but often
• Read more about synthesis here.

The most interesting literature reviews are often written as arguments (again, as mentioned at the beginning of the page, this is discipline-specific and doesn’t work for all situations). Often, the literature review is where you can establish your research as filling a particular gap or as relevant in a particular way. You have some chance to do this in your introduction in an article, but the literature review section gives a more extended opportunity to establish the conversation in the way you would like your readers to see it. You can choose the intellectual lineage you would like to be part of and whose definitions matter most to your thinking (mostly humanities-specific, but this goes for sciences as well). In addressing these points, you argue for your place in the conversation, which tends to make the lit review more compelling than a simple reporting of other sources.

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• Synthesizing Sources | Examples & Synthesis Matrix

Synthesizing Sources | Examples & Synthesis Matrix

Published on July 4, 2022 by Eoghan Ryan . Revised on May 31, 2023.

Synthesizing sources involves combining the work of other scholars to provide new insights. It’s a way of integrating sources that helps situate your work in relation to existing research.

Synthesizing sources involves more than just summarizing . You must emphasize how each source contributes to current debates, highlighting points of (dis)agreement and putting the sources in conversation with each other.

You might synthesize sources in your literature review to give an overview of the field or throughout your research paper when you want to position your work in relation to existing research.

Table of contents

Example of synthesizing sources, how to synthesize sources, synthesis matrix, other interesting articles, frequently asked questions about synthesizing sources.

Let’s take a look at an example where sources are not properly synthesized, and then see what can be done to improve it.

This paragraph provides no context for the information and does not explain the relationships between the sources described. It also doesn’t analyze the sources or consider gaps in existing research.

Research on the barriers to second language acquisition has primarily focused on age-related difficulties. Building on Lenneberg’s (1967) theory of a critical period of language acquisition, Johnson and Newport (1988) tested Lenneberg’s idea in the context of second language acquisition. Their research seemed to confirm that young learners acquire a second language more easily than older learners. Recent research has considered other potential barriers to language acquisition. Schepens, van Hout, and van der Slik (2022) have revealed that the difficulties of learning a second language at an older age are compounded by dissimilarity between a learner’s first language and the language they aim to acquire. Further research needs to be carried out to determine whether the difficulty faced by adult monoglot speakers is also faced by adults who acquired a second language during the “critical period.”

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To synthesize sources, group them around a specific theme or point of contention.

As you read sources, ask:

• What questions or ideas recur? Do the sources focus on the same points, or do they look at the issue from different angles?
• How does each source relate to others? Does it confirm or challenge the findings of past research?
• Where do the sources agree or disagree?

Once you have a clear idea of how each source positions itself, put them in conversation with each other. Analyze and interpret their points of agreement and disagreement. This displays the relationships among sources and creates a sense of coherence.

Consider both implicit and explicit (dis)agreements. Whether one source specifically refutes another or just happens to come to different conclusions without specifically engaging with it, you can mention it in your synthesis either way.

Synthesize your sources using:

• Topic sentences to introduce the relationship between the sources
• Signal phrases to attribute ideas to their authors
• Transition words and phrases to link together different ideas

To more easily determine the similarities and dissimilarities among your sources, you can create a visual representation of their main ideas with a synthesis matrix . This is a tool that you can use when researching and writing your paper, not a part of the final text.

In a synthesis matrix, each column represents one source, and each row represents a common theme or idea among the sources. In the relevant rows, fill in a short summary of how the source treats each theme or topic.

This helps you to clearly see the commonalities or points of divergence among your sources. You can then synthesize these sources in your work by explaining their relationship.

If you want to know more about ChatGPT, AI tools , citation , and plagiarism , make sure to check out some of our other articles with explanations and examples.

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Synthesizing sources means comparing and contrasting the work of other scholars to provide new insights.

It involves analyzing and interpreting the points of agreement and disagreement among sources.

You might synthesize sources in your literature review to give an overview of the field of research or throughout your paper when you want to contribute something new to existing research.

A literature review is a survey of scholarly sources (such as books, journal articles, and theses) related to a specific topic or research question .

It is often written as part of a thesis, dissertation , or research paper , in order to situate your work in relation to existing knowledge.

Topic sentences help keep your writing focused and guide the reader through your argument.

In an essay or paper , each paragraph should focus on a single idea. By stating the main idea in the topic sentence, you clarify what the paragraph is about for both yourself and your reader.

At college level, you must properly cite your sources in all essays , research papers , and other academic texts (except exams and in-class exercises).

Add a citation whenever you quote , paraphrase , or summarize information or ideas from a source. You should also give full source details in a bibliography or reference list at the end of your text.

The exact format of your citations depends on which citation style you are instructed to use. The most common styles are APA , MLA , and Chicago .

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Ryan, E. (2023, May 31). Synthesizing Sources | Examples & Synthesis Matrix. Scribbr. Retrieved March 22, 2024, from https://www.scribbr.com/working-with-sources/synthesizing-sources/

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What is a literature review?

A literature review is an integrated analysis -- not just a summary-- of scholarly writings and other relevant evidence related directly to your research question.  That is, it represents a synthesis of the evidence that provides background information on your topic and shows a association between the evidence and your research question.

A literature review may be a stand alone work or the introduction to a larger research paper, depending on the assignment.  Rely heavily on the guidelines your instructor has given you.

Why is it important?

A literature review is important because it:

• Explains the background of research on a topic.
• Demonstrates why a topic is significant to a subject area.
• Discovers relationships between research studies/ideas.
• Identifies major themes, concepts, and researchers on a topic.
• Identifies critical gaps and points of disagreement.
• Discusses further research questions that logically come out of the previous studies.

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1. Choose a topic. Define your research question.

Your literature review should be guided by your central research question.  The literature represents background and research developments related to a specific research question, interpreted and analyzed by you in a synthesized way.

• Make sure your research question is not too broad or too narrow.  Is it manageable?
• Begin writing down terms that are related to your question. These will be useful for searches later.
• If you have the opportunity, discuss your topic with your professor and your class mates.

2. Decide on the scope of your review

How many studies do you need to look at? How comprehensive should it be? How many years should it cover? 

• This may depend on your assignment.  How many sources does the assignment require?

3. Select the databases you will use to conduct your searches.

Make a list of the databases you will search. 

Where to find databases:

• use the tabs on this guide
• Find other databases in the Nursing Information Resources web page
• More on the Medical Library web page
• ... and more on the Yale University Library web page

4. Conduct your searches to find the evidence. Keep track of your searches.

• Use the key words in your question, as well as synonyms for those words, as terms in your search. Use the database tutorials for help.
• Save the searches in the databases. This saves time when you want to redo, or modify, the searches. It is also helpful to use as a guide is the searches are not finding any useful results.
• Review the abstracts of research studies carefully. This will save you time.
• Use the bibliographies and references of research studies you find to locate others.
• Check with your professor, or a subject expert in the field, if you are missing any key works in the field.
• Ask your librarian for help at any time.
• Use a citation manager, such as EndNote as the repository for your citations. See the EndNote tutorials for help.

Review the literature

Some questions to help you analyze the research:

• What was the research question of the study you are reviewing? What were the authors trying to discover?
• Was the research funded by a source that could influence the findings?
• What were the research methodologies? Analyze its literature review, the samples and variables used, the results, and the conclusions.
• Does the research seem to be complete? Could it have been conducted more soundly? What further questions does it raise?
• If there are conflicting studies, why do you think that is?
• How are the authors viewed in the field? Has this study been cited? If so, how has it been analyzed?

Tips: 

• Review the abstracts carefully.  
• Keep careful notes so that you may track your thought processes during the research process.
• Create a matrix of the studies for easy analysis, and synthesis, across all of the studies.
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Chapter 5: Writing a Summary and Synthesizing

5.5 Synthesis and Literature Reviews

Literature reviews : synthesis and research.

Why do we seek to understand the ways that authors or sources “converse” with one another? So that we can synthesize various perspectives on a topic to more deeply understand it.

In academic writing, this understanding of the “conversation” may become the content of an explanatory  synthesis  paper – a paper in which you, the writer, point out various various themes or key points from a conversation on a particular topic. Notice that the example of synthesis in “What Synthesis Is” acknowledges that guns and gun control inspire passionate responses in Americans, that more than one kind of weapon is involved in gun violence, that guns in America are both legally and illegally owned, and that there are many constituencies whose experience with guns needs to considered if sound gun-control policy is to be achieved. The writer of this synthesis isn’t “pretending” to be objective (“Although gun violence is a problem in American today, people who want to increase gun control clearly don’t understand the Second Amendment”); nor is the writer arguing a point or attempting to persuade the audience to accept one perspective. The writer is making a claim about gun control that demonstrates his or her deepest understanding of the issue.

Another assignment that you may complete that also applies your synthesis skills is a l iterature review .  Literature reviews are often found in the beginning of scholarly journal articles to contextualize the author’s own research. Sometimes, literature reviews are done for their own sake; some scholarly articles are  just  Literature reviews.

Literature reviews (sometimes shortened to “lit reviews”) synthesize previous research that has been done on a particular topic, summarizing important works in the history of research on that topic. The literature review provides context for the author’s own new research. It is the basis and background out of which the author’s research grows. Context = credibility in academic writing. When writers are able to produce a literature review, they demonstrate the breadth of their knowledge about how others have already studied and discussed their topic.

• Literature reviews are most often  arranged by topic or theme , much like a traditional explanatory synthesis paper.
• If one is looking at a topic that has a long history of research and scholarship, one may conduct a chronological  literature review, one that looks at how the research topic has been studied and discussed in various time periods (i.e., what was published ten years ago, five years ago, and within the last year, for example).
• Finally, in some instances, one might seek to craft a literature review that is organized  by discipline or field. This type of literature review could offer information about how different academic fields have examined a particular topic (i.e., what is the current research being done by biologists on this topic? What is the current research being done by psychologists on this topic? What is the current research being done by [ insert academic discipline] on this topic?).

A Literature Review offers  only  a report on what others have already written about. The Literature Review does not reflect the author’s own argument or contributions to the field of research. Instead, it indicates that the author has read others’ important contributions and understands what has come before him or her. Sometimes, literature reviews are stand alone assignments or publications. Sometimes, they fit into a larger essay or article (especially in many of the scholarly articles that you will read throughout college. For more information on how literature reviews are a part of scholarly articles, see chapter 10.5 )

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Critical Strategies and Writing

One of the basic academic writing activities is researching your topic and what others have said about it. Your goal should be to draw thoughts, observations, and claims about your topic from your research. We call this process of drawing from multiple sources “ synthesis .” Click on the accordion items below for more information.

Definition, Use, and Sample Synthesis

Synthesis defined.

Synthesis Emerges from Analysis

Synthesis emerges from analytical activities we discussed on the previous page: comparative analysis and analysis for cause and effect . For example, to communicate where scholars agree and where they disagree, one must analyze their work for similarities and differences. Also crucial for understanding scholarly discourse is understanding how a particular work of scholarship shapes the scholarship of others, causing them to head in new directions.

When Should Synthesis Be Used?

When to Use Synthesis

Many college assignments require synthesis. A literature review, for example, requires that you make explanatory claims regarding a body of research. These should go beyond summary (mere description) to provide helpful characterizations that aid in understanding. Literature reviews can stand on their own, but often they are a part of a research paper, and research papers are where you will probably use synthesis most often.

The purpose of a research paper is to derive meaning from a body of information collected through research. It is your job, as the writer, to communicate that meaning to your readers. Doing this requires that you develop an informed and educated opinion of what your research suggests about your subject. Communicating this opinion requires synthesis.

Sample Synthesis

In 1655, an embassy of Dutch Jews led by Rabbi Menassah ben Israel traveled to London to meet with the Commonwealth’s new Lord Protector, Oliver Cromwell. The informal “Readmission” of Jews—who had been expelled from England by royal edict in 1290—resulting from the Whitehall conference was once hailed as a high point in the history of toleration. Yet in recent years, scholars have increasingly challenged the progressive nature of this event, both in its substance and its motivation (Kaplan 2007; Katznelson 2010; Walsham 2006) . “Toleration” in this case, as in many others, did not entail religious freedom or civic equality; Jews in England were granted legal residency and permitted to worship privately, but citizenship, public worship, and the printing of anything that “opposeth the Christian religion” remained off the cards. As for its motivation, Edward Whalley’s twofold argument was representative: the Jews “will bring in much wealth into this Commonwealth: and where wee both pray for theyre conversion and beleeve it shal be, I knowe not why wee shold deny the means” (Marshall 2006, 381–82) 

(Bejan, 2015, p. 1103).

The author of the above passage, Teresa Bejan, has synthesized the work of a number of other scholars (Kaplan, Katznelson, Walsham, and Marshall) to situate her argument.  Note how not all of these scholars are directly quoted, but they are cited because their work forms the basis of Bejan's work.

Key Takeaways

• Synthesizing allows you to carry an argument or stance you adopt within a paper in your own words, based on conclusions you have come to about the topic.
• Synthesizing contributes to confidence about your stance and topic.

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Table of Contents: Online Guide to Writing

Chapter 1: College Writing

How Does College Writing Differ from Workplace Writing?

What Is College Writing?

Why So Much Emphasis on Writing?

Chapter 2: The Writing Process

Doing Exploratory Research

Getting from Notes to Your Draft

Introduction

Prewriting - Techniques to Get Started - Mining Your Intuition

Prewriting: Targeting Your Audience

Prewriting: Techniques to Get Started

Prewriting: Understanding Your Assignment

Rewriting: Being Your Own Critic

Rewriting: Creating a Revision Strategy

Rewriting: Getting Feedback

Rewriting: The Final Draft

Techniques to Get Started - Outlining

Techniques to Get Started - Using Systematic Techniques

Thesis Statement and Controlling Idea

Writing: Getting from Notes to Your Draft - Freewriting

Writing: Getting from Notes to Your Draft - Summarizing Your Ideas

Writing: Outlining What You Will Write

Chapter 3: Thinking Strategies

A Word About Style, Voice, and Tone

A Word About Style, Voice, and Tone: Style Through Vocabulary and Diction

Critical Strategies and Writing: Analysis

Critical Strategies and Writing: Evaluation

Critical Strategies and Writing: Persuasion

Critical Strategies and Writing: Synthesis

Developing a Paper Using Strategies

Kinds of Assignments You Will Write

Patterns for Presenting Information

Patterns for Presenting Information: Critiques

Patterns for Presenting Information: Discussing Raw Data

Patterns for Presenting Information: General-to-Specific Pattern

Patterns for Presenting Information: Problem-Cause-Solution Pattern

Patterns for Presenting Information: Specific-to-General Pattern

Patterns for Presenting Information: Summaries and Abstracts

Supporting with Research and Examples

Writing Essay Examinations

Writing Essay Examinations: Make Your Answer Relevant and Complete

Writing Essay Examinations: Organize Thinking Before Writing

Writing Essay Examinations: Read and Understand the Question

Chapter 4: The Research Process

Planning and Writing a Research Paper

Planning and Writing a Research Paper: Ask a Research Question

Planning and Writing a Research Paper: Cite Sources

Planning and Writing a Research Paper: Collect Evidence

Planning and Writing a Research Paper: Decide Your Point of View, or Role, for Your Research

Planning and Writing a Research Paper: Draw Conclusions

Planning and Writing a Research Paper: Find a Topic and Get an Overview

Planning and Writing a Research Paper: Manage Your Resources

Planning and Writing a Research Paper: Outline

Planning and Writing a Research Paper: Survey the Literature

Planning and Writing a Research Paper: Work Your Sources into Your Research Writing

Research Resources: Where Are Research Resources Found? - Human Resources

Research Resources: What Are Research Resources?

Research Resources: Where Are Research Resources Found?

Research Resources: Where Are Research Resources Found? - Electronic Resources

Research Resources: Where Are Research Resources Found? - Print Resources

Structuring the Research Paper: Formal Research Structure

Structuring the Research Paper: Informal Research Structure

The Nature of Research

The Research Assignment: How Should Research Sources Be Evaluated?

The Research Assignment: When Is Research Needed?

The Research Assignment: Why Perform Research?

Chapter 5: Academic Integrity

Academic Integrity

Giving Credit to Sources

Giving Credit to Sources: Copyright Laws

Giving Credit to Sources: Documentation

Giving Credit to Sources: Style Guides

Integrating Sources

Practicing Academic Integrity

Practicing Academic Integrity: Keeping Accurate Records

Practicing Academic Integrity: Managing Source Material

Practicing Academic Integrity: Managing Source Material - Paraphrasing Your Source

Practicing Academic Integrity: Managing Source Material - Quoting Your Source

Practicing Academic Integrity: Managing Source Material - Summarizing Your Sources

Types of Documentation

Types of Documentation: Bibliographies and Source Lists

Types of Documentation: Citing World Wide Web Sources

Types of Documentation: In-Text or Parenthetical Citations

Types of Documentation: In-Text or Parenthetical Citations - APA Style

Types of Documentation: In-Text or Parenthetical Citations - CSE/CBE Style

Types of Documentation: In-Text or Parenthetical Citations - Chicago Style

Types of Documentation: In-Text or Parenthetical Citations - MLA Style

Types of Documentation: Note Citations

Chapter 6: Using Library Resources

Finding Library Resources

Chapter 7: Assessing Your Writing

How Is Writing Graded?

How Is Writing Graded?: A General Assessment Tool

The Draft Stage

The Draft Stage: The First Draft

The Draft Stage: The Revision Process and the Final Draft

The Draft Stage: Using Feedback

The Research Stage

Using Assessment to Improve Your Writing

Chapter 8: Other Frequently Assigned Papers

Reviews and Reaction Papers: Article and Book Reviews

Reviews and Reaction Papers: Reaction Papers

Writing Arguments

Writing Arguments: Adapting the Argument Structure

Writing Arguments: Purposes of Argument

Writing Arguments: References to Consult for Writing Arguments

Writing Arguments: Steps to Writing an Argument - Anticipate Active Opposition

Writing Arguments: Steps to Writing an Argument - Determine Your Organization

Writing Arguments: Steps to Writing an Argument - Develop Your Argument

Writing Arguments: Steps to Writing an Argument - Introduce Your Argument

Writing Arguments: Steps to Writing an Argument - State Your Thesis or Proposition

Writing Arguments: Steps to Writing an Argument - Write Your Conclusion

Writing Arguments: Types of Argument

Appendix A: Books to Help Improve Your Writing

Dictionaries

General Style Manuals

Researching on the Internet

Special Style Manuals

Writing Handbooks

Appendix B: Collaborative Writing and Peer Reviewing

Collaborative Writing: Assignments to Accompany the Group Project

Collaborative Writing: Informal Progress Report

Collaborative Writing: Issues to Resolve

Collaborative Writing: Methodology

Collaborative Writing: Peer Evaluation

Collaborative Writing: Tasks of Collaborative Writing Group Members

Collaborative Writing: Writing Plan

General Introduction

Peer Reviewing

Appendix C: Developing an Improvement Plan

Working with Your Instructor’s Comments and Grades

Appendix D: Writing Plan and Project Schedule

Devising a Writing Project Plan and Schedule

Reviewing Your Plan with Others

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OASIS: Writing Center

Common assignments: literature reviews, basics of literature reviews.

A literature review is a written approach to examining published information on a particular topic or field. Authors use this review of literature to create a foundation and justification for their research or to demonstrate knowledge on the current state of a field. This review can take the form of a course assignment or a section of a longer capstone project. Read on for more information about writing a strong literature review!

Students often misinterpret the term "literature review" to mean merely a collection of source summaries, similar to annotations or article abstracts. Although summarizing is an element of a literature review, the purpose is to create a comprehensive representation of your understanding of a topic or area of research, such as what has already been done or what has been found. Then, also using these sources, you can demonstrate the need for future research, specifically, your future research.

There is usually no required format or template for a literature review. However, there are some actions to keep in mind when constructing a literature review:

• Include an introduction and conclusion . Even if the literature review will be part of a longer document, introductory and concluding paragraphs can act as bookends to your material. Provide background information for your reader, such as including references to the pioneers in the field in the beginning and offering closure in the end by discussing the implications of future research to the field.
• Avoid direct quotations . Just like in an annotated bibliography, you will want to paraphrase all of the material you present in a literature review. This assignment is a chance for you to demonstrate your knowledge on a topic, and putting ideas into your own words will ensure that you are interpreting the found material for your reader. Paraphrasing will also ensure your review of literature is in your authorial voice.
• Organize by topic or theme rather than by author. When compiling multiple sources, a tendency can be to summarize each source and then compare and contrast the sources at the end. Instead, organize your source information by your identified themes and patterns. This organization helps demonstrate your synthesis of the material and inhibits you from creating a series of book reports.
•  Use headings . APA encourages the use of headings within longer pieces of text to display a shift in topic and create a visual break for the reader. Headings in a literature review can also help you as the writer organize your material by theme and note any layers, or subtopics, within the field.
• Show relationships and consider the flow of ideas. A literature review can be lengthy and dense, so you will want to make your text appealing to your reader. Transitions and comparison terms will allow you to demonstrate where authors agree or disagree on a topic and highlight your interpretation of the literature.

Related Multimedia, Social Media, and Other Resources

Randolph, J. J. (2009). A guide to writing the dissertation literature review. Practical Assessment, Research and Evaluation , 14 (13), 1–13. https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1219&context=pare

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How to Synthesize Written Information from Multiple Sources

Shona McCombes

Content Manager

B.A., English Literature, University of Glasgow

Shona McCombes is the content manager at Scribbr, Netherlands.

Learn about our Editorial Process

Saul Mcleod, PhD

Editor-in-Chief for Simply Psychology

BSc (Hons) Psychology, MRes, PhD, University of Manchester

Saul Mcleod, PhD., is a qualified psychology teacher with over 18 years of experience in further and higher education. He has been published in peer-reviewed journals, including the Journal of Clinical Psychology.

On This Page:

When you write a literature review or essay, you have to go beyond just summarizing the articles you’ve read – you need to synthesize the literature to show how it all fits together (and how your own research fits in).

Synthesizing simply means combining. Instead of summarizing the main points of each source in turn, you put together the ideas and findings of multiple sources in order to make an overall point.

At the most basic level, this involves looking for similarities and differences between your sources. Your synthesis should show the reader where the sources overlap and where they diverge.

Unsynthesized Example

Franz (2008) studied undergraduate online students. He looked at 17 females and 18 males and found that none of them liked APA. According to Franz, the evidence suggested that all students are reluctant to learn citations style. Perez (2010) also studies undergraduate students. She looked at 42 females and 50 males and found that males were significantly more inclined to use citation software ( p < .05). Findings suggest that females might graduate sooner. Goldstein (2012) looked at British undergraduates. Among a sample of 50, all females, all confident in their abilities to cite and were eager to write their dissertations.

Synthesized Example

Studies of undergraduate students reveal conflicting conclusions regarding relationships between advanced scholarly study and citation efficacy. Although Franz (2008) found that no participants enjoyed learning citation style, Goldstein (2012) determined in a larger study that all participants watched felt comfortable citing sources, suggesting that variables among participant and control group populations must be examined more closely. Although Perez (2010) expanded on Franz’s original study with a larger, more diverse sample…

Step 1: Organize your sources

After collecting the relevant literature, you’ve got a lot of information to work through, and no clear idea of how it all fits together.

Before you can start writing, you need to organize your notes in a way that allows you to see the relationships between sources.

One way to begin synthesizing the literature is to put your notes into a table. Depending on your topic and the type of literature you’re dealing with, there are a couple of different ways you can organize this.

Summary table

A summary table collates the key points of each source under consistent headings. This is a good approach if your sources tend to have a similar structure – for instance, if they’re all empirical papers.

Each row in the table lists one source, and each column identifies a specific part of the source. You can decide which headings to include based on what’s most relevant to the literature you’re dealing with.

For example, you might include columns for things like aims, methods, variables, population, sample size, and conclusion.

For each study, you briefly summarize each of these aspects. You can also include columns for your own evaluation and analysis.

The summary table gives you a quick overview of the key points of each source. This allows you to group sources by relevant similarities, as well as noticing important differences or contradictions in their findings.

Synthesis matrix

A synthesis matrix is useful when your sources are more varied in their purpose and structure – for example, when you’re dealing with books and essays making various different arguments about a topic.

Each column in the table lists one source. Each row is labeled with a specific concept, topic or theme that recurs across all or most of the sources.

Then, for each source, you summarize the main points or arguments related to the theme.

The purposes of the table is to identify the common points that connect the sources, as well as identifying points where they diverge or disagree.

Step 2: Outline your structure

Now you should have a clear overview of the main connections and differences between the sources you’ve read. Next, you need to decide how you’ll group them together and the order in which you’ll discuss them.

For shorter papers, your outline can just identify the focus of each paragraph; for longer papers, you might want to divide it into sections with headings.

There are a few different approaches you can take to help you structure your synthesis.

If your sources cover a broad time period, and you found patterns in how researchers approached the topic over time, you can organize your discussion chronologically .

That doesn’t mean you just summarize each paper in chronological order; instead, you should group articles into time periods and identify what they have in common, as well as signalling important turning points or developments in the literature.

If the literature covers various different topics, you can organize it thematically .

That means that each paragraph or section focuses on a specific theme and explains how that theme is approached in the literature.

Source Used with Permission: The Chicago School

If you’re drawing on literature from various different fields or they use a wide variety of research methods, you can organize your sources methodologically .

That means grouping together studies based on the type of research they did and discussing the findings that emerged from each method.

If your topic involves a debate between different schools of thought, you can organize it theoretically .

That means comparing the different theories that have been developed and grouping together papers based on the position or perspective they take on the topic, as well as evaluating which arguments are most convincing.

Step 3: Write paragraphs with topic sentences

What sets a synthesis apart from a summary is that it combines various sources. The easiest way to think about this is that each paragraph should discuss a few different sources, and you should be able to condense the overall point of the paragraph into one sentence.

This is called a topic sentence , and it usually appears at the start of the paragraph. The topic sentence signals what the whole paragraph is about; every sentence in the paragraph should be clearly related to it.

A topic sentence can be a simple summary of the paragraph’s content:

“Early research on [x] focused heavily on [y].”

For an effective synthesis, you can use topic sentences to link back to the previous paragraph, highlighting a point of debate or critique:

“Several scholars have pointed out the flaws in this approach.” “While recent research has attempted to address the problem, many of these studies have methodological flaws that limit their validity.”

By using topic sentences, you can ensure that your paragraphs are coherent and clearly show the connections between the articles you are discussing.

As you write your paragraphs, avoid quoting directly from sources: use your own words to explain the commonalities and differences that you found in the literature.

Don’t try to cover every single point from every single source – the key to synthesizing is to extract the most important and relevant information and combine it to give your reader an overall picture of the state of knowledge on your topic.

Step 4: Revise, edit and proofread

Like any other piece of academic writing, synthesizing literature doesn’t happen all in one go – it involves redrafting, revising, editing and proofreading your work.

Checklist for Synthesis

•   Do I introduce the paragraph with a clear, focused topic sentence?
•   Do I discuss more than one source in the paragraph?
•   Do I mention only the most relevant findings, rather than describing every part of the studies?
•   Do I discuss the similarities or differences between the sources, rather than summarizing each source in turn?
•   Do I put the findings or arguments of the sources in my own words?
•   Is the paragraph organized around a single idea?
•   Is the paragraph directly relevant to my research question or topic?
•   Is there a logical transition from this paragraph to the next one?

Further Information

How to Synthesise: a Step-by-Step Approach

Help…I”ve Been Asked to Synthesize!

Learn how to Synthesise (combine information from sources)

How to write a Psychology Essay

Subject Guides

Literature Review and Evidence Synthesis

How to determine the type of review to assign, narrative literature review, peer review exercise, protocol exercise, search methods exercise, critical appraisal exercise, data extraction exercise, qualitative data synthesis exercise, systematized review, updating an existing review, rapid review exercise.

• Annotated Bibliography
• Integrative Review
• Scoping Review This link opens in a new window
• Systematic Review This link opens in a new window
• Other Review Types
• Subject Librarian Assistance with Reviews
• Grey Literature This link opens in a new window

Due to the complex methodology of a systematic review  and the extended timeline required ( >1 year), assigning this type of review for a semester long assignment may be frustrating for both the students and the faculty. (See A Step by Step Guide to a Systematic Review ).

If the goal is for the students to develop life-long research skills and learn how to explore the scholarly conversation within the profession, many types of reviews, with less demanding methodologies, will help the students develop these skills successfully! 

Below are various types of assignments which incorporate essential elements of a systematic review in semester size chunks. Learning objectives are included for each of the examples. 

Please reach out to your subject librarian with any questions . 

Descriptions of the various types of reviews and the associated guidelines can be found in these articles : 

• Grant, M. J., & Booth, A. (2009). A typology of reviews: an analysis of 14 review types and associated methodologies.  Health information and libraries journal ,  26 (2), 91–108.  https://pubmed.ncbi.nlm.nih.gov/19490148/
• Sutton, A., Clowes, M., Preston, L. & Booth, A. (2019). Meeting the review family:  Exploring review types and associated information retrieval requirements. Health information and libraries journal. 36 (3).   https://pubmed.ncbi.nlm.nih.gov/31541534/

A narrative literature review is an integrated analysis of the existing literature used to summarize a body of literature, draw conclusions about a topic, and identify research gaps.  By understanding the current state of the literature, you can show how new research fits into the larger research landscape.  

The purposes of a narrative literature review:

• Explain the background of research on a topic
• Demonstrate the importance of a topic
• Suggest new areas of research
• Identify major themes, concepts, and researchers in a topic
• Identify critical gaps, points of disagreement, or flawed approaches for a research topic

More information about Narrative Reviews can be found here

Learning outcomes for a Narrative Literature Review would show that students have learned: 

• How to develop a research question
• How to search for literature to answer the research question
• Which databases are applicable to their topic of inquiry
• How to format a literature review
• How to synthesize sources of information
• How to cite literature sources

The complexity of this assignment can be modified dependent upon the course objectives. 

Peer review is a process all scholars will experience in their career whether it is in the form of receiving or providing this feedback. Many of the  exercises mentioned on this page would be appropriate for a peer review exercise.

A narrative literature review can be a good starting point for novice peer reviewers.

The protocol development exercise and the search strategy development exercises can be reviewed using the PRISMA-P and the PRISMA-S checklists.

The critical appraisal exercise can be reviewed using the CASP or JBI Critical Appraisal Checklists .

The data extraction exercise can be reviewed by comparing the results to a previously developed protocol.

For this exercise students would benefit from faculty developed examples of constructive review feedback along with an explanation of how the peer review process works, and why it is important in health science scholarship.

Learning objectives for the peer review exercise: 

Students will learn the importance of the peer review process

Students will learn how peer review supports the scholarly process

Students will learn more about the conduct and reporting standards through the critique process

Students will learn how to provide and learn from constructive feedback

One of the initial steps for completing an evidence synthesis project, such as a Scoping or Systematic Review, is to develop and register a protocol. The purpose of a protocol is to provide a detailed plan for the review project, reduce the risk of bias within the review and to establish providence of the research question to be evaluated. 

The  PLoS Medicine  Editors (2011) Best Practice in Systematic Reviews: The Importance of Protocols and Registration. PLoS Med 8(2): e1001009. https://doi.org/10.1371/journal.pmed.1001009

Protocols are developed according to the PRISMA-P protocol reporting guidelines . 

Assigning the development of a protocol will help the students to: 

• learn the basics of the PRISMA guidelines
• learn how to develop a research question
• learn how to develop and identify the inclusion and exclusion criteria
• learn how to identify which information sources are most appropriate to answer the research question
• learn how to develop a search strategy
• learn how to document and record the data management process
• learn how to define the data that will be collected and will answer the research question
• learn about the resources available to assess for the risk of bias

Detailed instructions for protocol development and additional protocol resources . 

• PRISMA-P Elaboration & Explanation
• Evidence Synthesis Protocol Template
• Systematic Review Protocol Template

Developing an equally sensitive and specific search strategy to ensure that the results are comprehensive for a systematic or scoping review is a complex task which often involves days of work for information professionals/academic librarians . This process involves learning which databases are applicable to the research topic, learning the controlled vocabulary of those databases and learning how to translate the search strategy from one database to the next to ensure a consistent search. Developing a systematic searching method is the basis of a systematic review. 

A systematic review is considered strong evidence when the methodology is reproducible. In this type of assignment, the students will also learn how to document their search strategy to ensure that it is transparent and reproducible. PRISMA- S provides reporting standards for systematic review search strategy documentation. The PRISMA- S may be used as a rubric for the assignment. 

Learning outcomes for the Search Method Exercise would show that students have learned: 

• which databases are applicable to their profession
• how to navigate an academic database and use the controlled vocabulary
• valuable expert searching skills
• the process of systematic searching
• how to document a transparent and reproducible search
• why transparency and reproducibility are an important element of strong evidence

"Critical appraisal is the process of carefully and systematically examining research to judge its trustworthiness, and its value and relevance in particular context. It is an essential skill for evidence-based practice because it allows healthcare professionals to find and use research evidence reliably and efficiently" 

Burls, A. (2009). What is critical appraisal? In What Is This Series: Evidence-based medicine. Available online at  What is Critical Appraisal?

Critical appraisal of the evidence to be synthesized is a vital step in the methodology of a systematic review. The process involves becoming familiar with the JBI or CASP checklists, learning the whys and hows of critical appraisal, and using critical thinking to determine the validity, reliability and relevance of a study in relation to the research question. 

Learning outcomes for a Critical Appraisal Exercise would show that students have learned:

• The purpose of the critical appraisal process
• Where to find critical appraisal checklists for specific types of studies
• The concepts of validity, reliability, transparency and relevance in relation to scientific study methodology
• What is required to ensure a study is valid, reliable and relevant
• How to use critical thinking to determine if a study would be included in the evidence synthesis of their review

This exercise could be modified to include few to many studies, multiple types of studies and could be an assignment on its own or part of a larger project. 

< id="docs-internal-guid-596bd17a-7fff-8c21-8dcb-280fbc9ba492">Data extraction is the first step in the synthesis process of a systematic review. This step requires that the review team adhere strictly to the PICO elements of the research question and extract data according to those elements. For this exercise, the students may work independently and then come together as a team to discuss their findings. Additional information regarding the data extraction process can be found in chapter 5 of the Cochrane Handbook for Systematic Reviews 29 .

Learning objectives for the data extraction exercise: 

Students will learn the data extraction process of a systematic review

Students will learn the process of adhering to predefined criteria

Students will gain experience with data collection, management, and documentation

Students will gain experience working with a team

Qualitative synthesis of the data extracted is a required aspect of a systematic review. This process is completed regardless of a quantitative analysis. The qualitative synthesis is a narrative thematic analysis of the themes found within the data. A summarization of general characteristics of the data are analyzed along with relationships, patterns, heterogeneity and degrees of consistency. This narrative will also describe how the data answers the research question, determine the strengths and weaknesses of the data, identify evidence gaps and compare the findings with known scholarship. 

Learning objectives for the qualitative data synthesis exercise: 

Students will learn how to analyze and synthesize qualitative data

Students will apply critical thinking skills

Students will develop higher order writing skills

Students will learn the qualitative data synthesis process of a systematic review

Introduced by Grant & Booth (2009) , the systematized review is an introductory review process for students. While a systematized review does not meet the strict criteria for conducting and reporting a systematic review, it can work as an introduction to the process. This type of review can also be completed by a single researcher or student whereas a systematic review requires a team of experts. 

"Attempt to include elements of systematic review process while stopping short of systematic review. Typically conducted as a postgraduate student assignment" Grant (2009).

Learning objectives for a systematized review will allow students to learn:

• An overview of the methodology for a systematic review according to the guidelines
• How to determine inclusion and exclusion criteria
• How to determine which databases and resources are appropriate for their research question
• How to develop an systematic search strategy
• How to document a transparent and reproducible search strategy
• How to critically appraise scholarly evidence
• How to synthesize evidence
• How to report a systematic review according to the PRISMA guidelines

Prior to initiating a systematic review it is common practice to ensure that a review does not already exist related to your research question. In this search you may run across a systematic review that is outdated, this presents the opportunity to update the data. It is essential that prior to starting the update of a review, that the initial review is critically appraised to ensure that the methodology is correct and that all of the essential elements needed to update the review are available. 

"The update of a systematic review should be conducted according to the standards for any review, including the additional requirements of an update. These standards will ensure that any changes are managed appropriately and reported clearly to readers" 

Please refer to these resources for guidance to update systematic reviews:

• Cochrane Handbook Ch IV: Updating a Review
• Cochrane MECIR Manual: Reporting Standards Specific to Updates
• Cochrane Handbook Ch 22.2  Maintaining the currency of systematic reviews

The PRISMA flow diagram for SR updates is required in the reporting of the update. 

Student learning objectives for updating a systematic review: 

• The standard guidelines for conducting a systematic review
• How to modify an existing search strategy
• How to implement a comprehensive and systematic search strategy
• How to document/report a systematic review
• Why the conduct and reporting standards of a systematic review are essential to produce rigorous evidence
• How to complete a group project
• How to use citation managers

A rapid review provides a rapid synthesis of knowledge about a policy or clinical practice issue and attempts to inform an evidence-based decision quickly. It follows many of the stages of a systematic knowledge synthesis but may modify stages to shorten the timeline.

• Garritty, C., Gartlehner, G., Nussbaumer-Streit, B., King, V. J., Hamel, C., Kamel, C., … & Stevens, A. (2020). Cochrane Rapid Reviews Methods Group offers evidence-informed guidance to conduct rapid reviews. Journal of Clinical Epidemiology.  https://doi.org/10.1016/j.jclinepi.2020.10.007
• Khangura, S., Konnyu, K., Cushman, R., Grimshaw, J., & Moher, D. (2012). Evidence summaries: the evolution of a rapid review approach. Systematic Reviews, 1, 10.  http://doi.org/10.1186/2046-4053-1-10

Learning outcomes for Rapid or Scoping Review Exercises: 

Students will learn: 

• to develop an answerable research question
• to develop advanced search skills for various databases
• to develop an understanding of the methodology for rapid or scoping reviews
• how to determine the scholars of a specific topic within the profession
• how to synthesize the evidence acquired from the studies 

Source: Price, C. (n.d.)  Is there better teaching opportunity than assigning systematic reviews in a semester ? Covidence.  https://www.covidence.org/blog/elementor-2112/

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Literature Review Assignment

Note to instructors: This literature review assignment may be used as part of an ongoing research project, or it may be used as a stand-alone project. You are encouraged to adopt, adapt, or remix these guidelines to suit your goals for your class.

Rough Draft:

Peer Review:

Final Draft:

This assignment will help you become aware of how writers and researchers consider previous work on a topic before they begin additional research. 

• Locate a variety of scholarly print and digital sources that represent multiple perspectives on a topic.
• Analyze sources by critically reading, annotating, engaging, comparing, and drawing implications.
• Methods of gathering and determining the credibility of sources
• Strategies for identifying and discussing multiple perspectives in research

A literature review provides context and establishes the need for new research. In your literature review, you will summarize and analyze published research on your topic by identifying strengths, weaknesses, commonalities, and disagreements among your sources.

For this assignment, you will conduct research on your topic and then compose a thoughtful, well-organized literature review that reflects your own analysis of at least five scholarly sources and their contributions to your topic. (Note that a literature review differs from an annotated bibliography, which simply lists sources and summaries one-by-one. A literature review also differs from a research paper because it does not include new arguments or unpublished primary research.)

Your literature review should have three parts: an introduction, a body, and a conclusion.

Introduction

In the introduction, identify your research topic and provide appropriate background information to clarify the context in which you will be reviewing the sources. You should also identify commonalities, conflicts, and/or gaps in published research. Finally, you should explain the criteria you’ve used to analyze, compare, and contrast sources.

In the body, discuss your sources. Organize your discussion of sources based on a common characteristic such as authors’ purposes, findings, or conclusions; research methodologies; or chronology. Briefly summarize each source and describe the strengths and weaknesses of each source. Identify and analyze each source’s contribution to the topic and address differing viewpoints. Integrate source information effectively using lead-in phrases and citations. 

In the conclusion, discuss the ways your sources have contributed to greater knowledge and understanding of the topic and address shortcomings in the existing research. Answer the following questions: What has your review of the sources revealed or demonstrated about the topic? What new questions that have been raised? What areas need further study? 

Formatting requirements

Follow MLA format. Use black Calibri or Times New Roman font in size 12. Double-space the entire document. Use 1-inch margins on all sides.

Criteria for success

General criteria:.

• The writing is clear and coherent/makes sense. 
• The tone and language are appropriate for the audience.
• The writing adheres to grammar and punctuation rules.
• All sources are cited properly, both within the literature review and on the Works Cited page. 

In the introduction, you should . . .

• Identify the general topic or issue you have researched.
• Provide appropriate background information to clarify the context in which you will be reviewing sources. 
• Identify overall trends conflicts, and/or gaps in research and scholarship; and/or identify a single problem or new perspective. 
• Explain the criteria you’ve used to analyze, compare, and contrast sources.
• When necessary, state why certain sources are, or are not, included. 

In the body, you should . . .

• Include at least five scholarly sources.
• Organize discussion of sources logically according to a common characteristic (E.g.: authors’ purposes, findings, or conclusions; research methodologies; or chronology)
• Briefly summarize individual sources.
• Describe strengths of each source.
• Describe weaknesses of each source.
• Identify and analyze each source’s contribution to the topic. 
• Address differing viewpoints.
• Integrate source information effectively using lead-in phrases and citations.

In the conclusion, you should . . .

• Discuss the ways your sources have contributed to greater knowledge and understanding of the topic.
• Address shortcomings in the existing research. 
• Note new information or understanding the literature review has revealed about the topic. 
• Note new questions that have been raised.
• Note areas where further study is needed.

The literature review should adhere to all formatting criteria:

• Follow MLA format throughout the literature review and on the Works Cited page.
• The entire document should be double-spaced. 
• The font should be Calibri or Times New Roman in size 12.
• The margins should be one inch on all sides.

This material was developed by the COMPSS team and is licensed under a  Creative Commons Attribution 4.0 International License . All materials created by the COMPSS team are free to use and can be adopted, adapted, and/or shared as long as the materials are attributed. Please keep this information on materials you adopt, adapt, and/or share. 

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