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Political Science Subject Guide: Literature Reviews

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More Literature Review Writing Tips

• Thesis Whisperer- Bedraggled Daisy Lay advice on writing theses and dissertations. This article demonstrates in more detail one aspect of our discussion

Books on the Literature Review

What is a literature review?

"A literature review is an account of what has been published on a topic by accredited scholars and researchers. [...] In writing the literature review, your purpose is to convey to your reader what knowledge and ideas have been established on a topic, and what their strengths and weaknesses are. As a piece of writing, the literature review must be defined by a guiding concept (e.g., your research objective, the problem or issue you are discussing, or your argumentative thesis). It is not just a descriptive list of the material available, or a set of summaries."

(from "The Literature Review: A Few Tips on Writing It," http://www.writing.utoronto.ca/advice/specific-types-of-writing/literature-review )

Strategies for conducting your own literature review

1. Use this guide as a starting point. Begin your search with the resources linked from the political science subject guide. These library catalogs and databases will help you identify what's been published on your topic.

2. What came first? Try bibliographic tracing. As you're finding sources, pay attention to what and whom these authors cite. Their footnotes and bibliographies will point you in the direction of additional scholarship on your topic.

3. What comes next? Look for reviews and citation reports. What did scholars think about that book when it was published in 2003? Has anyone cited that article since 1971? Reviews and citation analysis tools can help you determine if you've found the seminal works on your topic--so that you can be confident that you haven't missed anything important, and that you've kept up with the debates in your field. You'll find book reviews in JSTOR and other databases. Google Scholar has some citation metrics; you can use Web of Science ( Social Sciences Citation Index ) for more robust citation reports.

4. Stay current. Get familiar with the top journals in your field, and set up alerts for new articles. If you don't know where to begin, APSA and other scholarly associations often maintain lists of journals, broken out by subfield . In many databases (and in Google Scholar), you can also set up search alerts, which will notify you when additional items have been added that meet your search criteria.

5. Stay organized. A citation management tool--e.g., RefWorks, Endnote, Zotero, Mendeley--will help you store your citations, generate a bibliography, and cite your sources while you write. Some of these tools are also useful for file storage, if you'd like to keep PDFs of the articles you've found. To get started with citation management tools, check out this guide . 

How to find existing literature reviews

1. Consult Annual Reviews.  The Annual Review of Political Science consists of thorough literature review essays in all areas of political science, written by noted scholars. The library also subscribes to Annual Reviews in economics, law and social science, sociology, and many other disciplines.

2. Turn to handbooks, bibliographies, and other reference sources. Resources like Oxford Bibliographies Online and assorted handbooks ( Oxford Handbook of Comparative Politics , Oxford Handbook of American Elections and Political Behavior , etc.) are great ways to get a substantive introduction to a topic, subject area, debate, or issue. Not exactly literature reviews, but they do provide significant reference to and commentary on the relevant literature--like a heavily footnoted encyclopedia for specialists in a discipline. 

3. Search databases and Google Scholar.   Use the recommended databases in the "Articles & Databases" tab of this guide and try a search that includes the phrase "literature review."

4. Search in journals for literature review articles.  Once you've identified the important journals in your field as suggested in the section above, you can target these journals and search for review articles. 

5. Find book reviews.  These reviews can often contain useful contextual information about the concerns and debates of a field. Worldwide Political Science Abstracts is a good source for book reviews, as is JSTOR . To get to book reviews in JSTOR, select the advanced search option, use the title of the book as your search phrase, and narrow by item type: reviews. You can also narrow your search further by discipline.

6. Cast a wide net--don't forget dissertations.  Dissertations and theses often include literature review sections. While these aren't necessarily authoritative, definitive literature reviews (you'll want to check in Annual Reviews for those), they can provide helpful suggestions for sources to consider.

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This guide is designed to:

• Identify the sections and purpose of a literature review in academic writing
• Review practical strategies and organizational methods for preparing a literature review

Useful Links:

• CQUniversity Library - Literature Reviews
• How I Teach Students to Write Literature Reviews
• Research Rabbit
• How to Read a Scholarly Article
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• Social Science Citation Index
• Political Science Abstracts - World Wide
• Humanities and Social Sciences Retrospective
• LUC Writing Center
• The Matrix Method
• Lit Review Presentation (2-23-24)
• Lit Review Steps
• Literature_Matrix_Basic_BLANK
• LitReviewMatrixTemplate

What Is a Literature Review?

A literature review is a summary and synthesis of scholarly research on a specific topic. It should answer questions such as:

• What research has been done on the topic?
• Who are the key researchers and experts in the field?
• What are the common theories and methodologies?
• Are there challenges, controversies, and contradictions?
• Are there gaps in the research that your approach addresses?

The process of reviewing existing research allows you to fine-tune your research question and contextualize your own work. Preparing a literature review is a cyclical process. You may find that the research question you begin with evolves as you learn more about the topic.

Review the Literature

Once you have defined your research question, focus on learning what other scholars have written on the topic.

In order to do a thorough search of the literature on the topic, define the basic criteria:

• Databases and journals: Look at the subject guide related to your topic for recommended databases. 
• Books: Search the Library's catalog. 
• What time period should it cover? Is currency important?
• Do I know of primary and secondary sources that I can use as a way to find other information?
• What should I be aware of when looking at popular, trade, and scholarly resources? 

One strategy is to review bibliographies for sources that relate to your interest.

Tip: Use a Synthesis Matrix

As you read sources, themes will emerge that will help you to organize the review. You can use a simple Synthesis Matrix to track your notes as you read. From this work, a concept map emerges that provides an overview of the literature and ways in which it connects. Working with Zotero to capture the citations, you build the structure for writing your literature review.

Pacheco-Vega, R. (2016, June 17).  Synthesizing different bodies of work in your literature review: The Conceptual Synthesis Excel Dump (CSED) technique .  http://www.raulpacheco.org/2016/06/synthesizing-different-bodies-of-work-in-your-literature-review-the-conceptual-synthesis-excel-dump-technique/

How do I know when I am done?

A key indicator for knowing when you are done is running into the same articles and materials. With no new information being uncovered, you are likely exhausting your current search and should modify search terms or search different catalogs or databases. It is also possible that you have reached a point when you can start writing the literature review.

Tip: Manage Your Citations

These citation management tools also create citations, footnotes, and bibliographies with just a few clicks:

Zotero 

Write the Literature Review

Your literature review should be focused on the topic defined in your research question. It should be written in a logical, structured way and maintain an objective perspective and use a formal voice.

Review the Summary Table you created for themes and connecting ideas. Use the following guidelines to prepare an outline of the main points you want to make. 

• Synthesize previous research on the topic.
• Aim to include both summary and synthesis.
• Include literature that supports your research question as well as that which offers a different perspective.
• Avoid relying on one author or publication too heavily.
• Select an organizational structure, such as chronological, methodological, and thematic.

The three elements of a literature review are introduction, body, and conclusion.

Introduction

• Define the topic of the literature review, including any terminology.
• Introduce the central theme and organization of the literature review.
• Summarize the state of research on the topic.
• Frame the literature review with your research question.
• Focus on ways to have the body of literature tell its own story. Do not add your own interpretations at this point.
• Look for patterns and find ways to tie the pieces together.
• Summarize instead of quote.
• Weave the points together rather than list summaries of each source.
• Include the most important sources, not everything you have read.
• Summarize the review of the literature.
• Identify areas of further research on the topic.
• Connect the review with your research.
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What is A Literature Review?

Definition :

A Literature Review surveys scholarly source materials that are relevant to a person's research thesis/problem and/or a particular issue or theory. It also provides a critical analysis that summarizes and synthesizes the source materials while also demonstrating how a person's research pertains to or fits within the larger discipline of study.

Literature Reviews vary from discipline to discipline as well as across assignments, but generally a good literature review is designed to help you answer 2 questions:

• What do we know about this particular issue, theory or subject?
• What do we not know about this particular issue, theory or subject?

Good literature reviews also :

• Evaluate the context of scholarly material for its contribution to the understanding of the research thesis being studied.
• Explain the relationships between each of the works under deliberation.
• Identify gaps in previous research.
• Define new ways to interpret research within a discipline.
• Address conflicts found in contradictory research previously conducted.
• Identify the need for additional research.

For Your Literature Review Include:

1. Introduction to the topic. State the topic, purpose, and significance. Provide a brief overview outlining the central points covered.

2. Relevance and Importance of studying this topic. What direction will the review take? Specific Aspects?

3. Literature Review. Organize your review of the research literature:  Methods, Chronological, different approaches or perspectives, etc... Remember you want to find the seminal or major works on your topic Avoid discussinh each article separately. Explore relationships and aim to compare/contrast more than one article in most paragraphs.

4. Any "Lessons Learned" that can be drawn from the literature review.

5. Future Directions. State any areas for further research, i.e. gaps, omissions, inconsistencies, hitherto unexplored aspects. 

 What types of literature are considered in a literature review

Peer-Reviewed articles are usually considered the most credible sources and the most common format of literature for a review.

In addition, when doing your research, consider those articles written by scholars who have written extensively on the specific topic or related areas. 

And more ......

A literature review DOES:

• discuss the work of others
• describe, in a narrative fashion, the major developments that relate to your research question
• evaluate other researchers' methods and findings
• identify any gaps in their research
• indicate how your research is going to be different in some way

A literature review DOES NOT:

• simply list all the resources that you consult in developing your research (that would be a Works Cited or Works Consulted page)
• simply list resources with a few factual, non-evaluative notes about what is in each work (that would be an Annotated Bibliography)
• try to discuss every bit of research that has ever been done relating to your topic (that would be far too big of a task)

Still confused?  See this guide  from the University of North Carolina for a more detailed explanation of lit reviews.

Tips for Writing Your Literature Review

• Signal Phrases for Summarizing, Paraphrasing, & Quotations
• Do not over "quote." If you only quote from every single author you found, then you are not showing any original thinking or analysis. Use quotes judiciously. Use quotes to highlight a particular passage or thought that exemplifies the research, theory or topic you are researching.
• Instead use paraphrasing to report, in your own words, what the author was reporting or theorizing.
• Summarize findings, important sections or a whole article--this is different from paraphrasing since you are not re-stating the author words but identifying the main points of what you are reading in a concise matter for your readers.
• When synthesizing your findings for the literature review (this is when you make comparisons, establish relationships between authors' works, point out weaknesses, strengths and gaps among the literature review), you still need to give credit to these sources.
• Short paragraphs are easier to read than long paragraphs.
• Subheadings and subsections can help to underscore the structure of your review.
• Do more than just summarize the readings.  A lit review is not an annotated bibliography.
• Resist the temptation to refer to *all* the readings you've evaluated.  To begin with, focus on readings you've identified as essential or representative

Literature Review vs. Annotated Bibliography

Literature reviews and annotated bibliographies may appear similar in nature, but in fact, they vary greatly in two very important areas: purpose and format.

Differences in Purpose :

Literature Review : A literature review works to do two main things. The first is to provide a case for continuing research into a particular subject or idea by giving an overview of source materials you have discovered on a subject or idea. The second is to demonstrate how your research will fit into the the larger discipline of study by noting discipline knowledge gaps and contextulizing questions for the betterment of the discipline. Literature reviews tend to have a stated or implied thesis as well.

Annotated Bibliography : An annotated bibliography is basically an aphabetically arranged list of references that consists of citations and a brief summary and critique of each of the source materials. The element of critiquing appears to give literature reviews and annotated bibliographies their apparent similarities but in truth this is where they greatly differ. An annotated bibliography normally critiques the quality of the source material  while literature reviews concentrate on the value of the source material in its ability to answer a particular question or support an argument.  

Differences in Format :

Literature Review : A literature review is a formally written prose document very similar to journal articles.  Many literature reviews are incorporated directly into scholarly source material as part of the formal research process. The literature review is typically a required component of dissertations and theses.

Annotated Bibliography : An annotated bibliography is a formal list of citations with annotations or short descriptions and critiques of particular source materials. Annotated bibliographies act as a precursor to a literature review as an organizational tool.

Literature Review Examples

To find literature reviews in databases like Academic Search Complete:

• Type your search term in the first search box.
• Type literature review in the second search box.

Some sample reviews:

• Writing a Short Literature Review
• Sample Literature Review
• Another Sample Literature Review

Ways to Organize Your Literature Review

Chronologically by Events   If your review follows the chronological method, you could write about the materials according to when they were published. This approach should only be followed if a clear path of research building on previous research can be identified and that these trends follow a clear chronological order of development. For example, a literature review that focuses on continuing research about the emergence of German economic power after the fall of the Soviet Union. By Publication Date Order your sources by publication date if the order demonstrates an important trend. For instance, you could order a review of literature on environmental studies of brown fields if the progression revealed, for example, a change in the soil collection practices of the researchers who wrote and/or conducted the studies. Thematically (“conceptual categories”) Thematic reviews of literature are organized around a topic or issue, rather than the progression of time. However, progression of time may still be an important factor in a thematic review. For example, a review of the Internet’s impact on American presidential politics could focus on the development of online political satire. While the study focuses on one topic, the Internet’s impact on American presidential politics, it will still be organized chronologically reflecting technological developments in media. The only difference here between a "chronological" and a "thematic" approach is what is emphasized the most: the role of the Internet in presidential politics. Note however that more authentic thematic reviews tend to break away from chronological order. A review organized in this manner would shift between time periods within each section according to the point made. Methodologically A methodological approach focuses on the methods utilized by the researcher. For the Internet in American presidential politics project, one methodological approach would be to look at cultural differences between the portrayal of American presidents on American, British, and French websites. Or the review might focus on the fundraising impact of the Internet on a particular political party. A methodological scope will influence either the types of documents in the review or the way in which these documents are discussed.

(adapted from  "The Literature Review"  from Organizing Your Social Research Paper, University of Southern California )

Best Practices: Quoting, Paraphrasing, etc.

Definitions:

Quoting *: "(a) to speak or write (a passage) from another usually with credit acknowledgment. (b) to repeat a passage especially in substantiation or illustration."

Paraphrasing *: Paraphrase is the "restatement of a text, passage, or work giving the meaning in another form."

Summarizing *: It's the process of summarizing a text or paragraph to tis main points succinctly.

Synthesizing *: "1. (a) the composition or combination of parts or elements so as to form a whole."

 *Definitions from Merriam Webster Dictionary Online: http://www.m-w.com <Accessed September 1st, 2011>

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What is a literature review and why should you do it?

A literature review is:.

• a summary and evaluation of the significant research and/or theory published on a topic
• organized in a way that analyzes, integrates, and shows the relationship between research studies, as well as the way each has contributed to an understanding of the topic
• NOT just an annotated bibliography

The purpose of a literature review is to:

• provide an overview of relevant literature, research, and methodology in an area of study
• explore relationships among the prior research
• evaluate the prior research
• identify gaps and discrepancies in the literature
• identify areas of controversy in the literature
• make an argument for why further study of your research question is important to a field

 Benefits to the researcher:

• Establishing context and significance of the problem
• Discovering appropriate subject vocabulary
• Identifying methodologies
• Identifying what has been researched and where gaps may be found – underused methodologies, designs, populations
• Focusing research topic

Evaluate your articles by asking yourself some of these questions:

• What is the methodology ?
• What is the quality of the findings or conclusions?
• What are the article’s major strengths and weaknesses ?
• What beliefs are expressed/is there an ideological stance?
• Can the results be generalized?
• How does this fit in and compare with other articles I have read?

Writing the review

The literature review should deal with relationships – how do the articles relate to each other?  How do the articles relate to your research?

In the literature review:

• Explain the reason for reviewing the literature; explain why particular literature was included or excluded
• Summarize the major contributions of the significant articles
• Evaluate and compare the articles
• Evaluate the current state of the research -- explain inconsistencies in theory or conclusions, gaps in research, trends in what has been published, and opportunities for further research
• DO NOT just summarize the articles

Ways to organize:

• By theoretical approaches
• By concept or issue
• By methodologies employed
• By chronology, if significant changes in thought have taken place
• Use subheadings to clarify the structure
• Use original sources -- do not cite works you have not read
• Minimize direct quotations by summarizing in your own words (with citations)
• Use appropriate quotation and citation methods to avoid plagiarism
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I.  What is a Literature Review? The purpose of a review is to analyze critically a segment of a published body of knowledge through summary, classification, and comparison of prior research studies. It can be a simple summary of the sources, but it usually has an organizational pattern, combining both summary and synthesis.

• Review of the Literature (Wisconsin)
• Systematic Literature Review vs Narrative Reviews
• Get Lit: the Literature Review Candace Schaefer in the Texas A&M University Writing Center.

III.  What Major Steps and Basic Elements Literature Reviews Require?

• Overview of the subject, issue or theory under consideration, along with the objectives of literature review
• Perform a literature review, finding materials relevant to the subject being explored
• Division of works under review into categories (e.g. those in support of a particular position, those against, etc)
• Explanation of how each work is similar to and how it varies from the others
• Conclusions as to which pieces are best considered in their argument, are most convincing of their opinions, and make the greatest contribution to the understanding and development of their area of research
• Write a Lit Review (UCSC)

IV.    Which Citation Tool Are You Going to Use to Manage the Literature Sources? Choose your citation tool before conducing your literature reviews.  There are a number of choices, including following software supported by the Libraries and the University:

• RefWorks Available at no cost to Texas A&M affiliates.
• EndNote Available for free through a campus-wide site license.

Cited Reference Searching

Cited references are the sources consulted in writing an article or a book, often referred to within the text of the work. A list of cited references may appear as Bibliographic Notes, Footnotes or Endnotes, References, List of Sources Cited or Consulted. In order for an article to be cited, it needs to have been published for a long enough period of time for another published article, citing it to appear.

These listings can be helpful in a number of ways:

• Finding an article on a relevant topic and accumulating similar helpful resources
• Following a specific idea or theory back to its first appearance in the literature
• Finding articles that build on a specific theory or the most recent article on a topic
• Identifying experts or leaders on a specific topic
• Documenting scholarly reputation and impact for tenure and promotion

The cited reference databases are efficient in pulling together many articles on a topic with their references and in identifying which articles on a topic have been cited most frequently.  They can also help identify the “top” journals in a field by impact factor, which may be useful for assessing them.

• Web of Science This link opens in a new window covers the world’s leading scholarly literature in the sciences, social sciences, arts, and humanities and examines proceedings of international conferences, symposia, seminars, colloquia, workshops, and conventions. It also includes cited references and citation mapping functions.

Searches can be done by:

• Title or Topic
•  Author or Editor – The Author Finder tool includes variations on an author’s name
• Journal or Publication Name
• Grant Name or Funding Agency
• Limited by year, Language, Document Type 

The citation of the article  will be retrieved with its references as well as the number of times cited and by whom.

You can refine your search results by subject area, useful when there is more than one author with the same name, or by document type.  You can see the number of articles in your set contributed by particular authors and institutions and can create a citation report to identify which articles in your results have been cited the most.

You can easily export your results to bibliographic software like EndNote or RefWorks.

Articles can be searched by:

• Abstract word or keyword
• Source or journal
• Author (by name or by affiliation)
• Limit by date or document type

The database allows accounts to be set up and can save search alerts and journals lists.  Scopus also provides journal analytics including data and graphs to illustrate the total citations, articles published, trend line and % not cited over time.  It has the ability to exclude self-citations.

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What is a Literature Review?

"A literature review is an account of what has been published on a topic by accredited scholars and researchers. [...] In writing the literature review, your purpose is to convey to your reader what knowledge and ideas have been established on a topic, and what their strengths and weaknesses are. As a piece of writing, the literature review must be defined by a guiding concept (e.g., your research objective, the problem or issue you are discussing, or your argumentative thesis). It is not just a descriptive list of the material available, or a set of summaries."

From Yale University Library "The Literature Review: A Few Tips on Writing It," http://www.writing.utoronto.ca/advice/specific-types-of-writing/literature-review )

Literature Review Help

Courtesy of the University of North Carolina State University Libraries

• Annual Reviews This link opens in a new window Critical reviews of current research in biomedical, life, physical, and social sciences disciplines. More Info Partial Full-Text UB ONLY

Useful Guides for Doing One

• The Literature Review: A Few Tips on Conducting it (University of Toronto)
• Organizing Your Social Science Research Paper: 5. The Literature Review (USC Libraries) 
• How to Write a Literature Review 
• Review of the Literature
• Literature Reviews (University of North Carolina at Chapel Hill)

How to Conduct a Literature Review in Political Science

• Literature Reviews (Political Science) (Yale University Library)
• Literature Review (Michigan State University)
• Literature Review (CQ University Library)

How to Read a Research Article

• How to Read a Scientific Paper (Elsevier)
• The Art of Reading Research Papers (Simon Fraser University)

More on Doing a Literature Review

• Jeffrey W. Knopf, "Doing a Literature Review," PS: Political Science & Politics 1 (January 2006): pp. 127-132.
• Iain McMenamin, "Process and Text: Teaching Students to Review the Literature," PS: Political Science & Politics 1 (January 2006): pp. 133-135.

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Article contents

Doing a literature review.

Published online by Cambridge University Press:  13 February 2006

Students entering a graduate program often encounter a new type of assignment that differs from the papers they had to write in high school or as college undergraduates: the literature review (also known as a critical review essay). Put briefly, a literature review summarizes and evaluates a body of writings about a specific topic. The need to conduct such reviews is by no means limited to graduate students; scholarly researchers generally carry out literature reviews throughout their research careers. In a world where the Internet has broadened the range of potentially relevant sources, however, doing a literature review can pose challenges even to an experienced researcher. In drafting this overview, I have incorporated some points made by Paul Pitman in a lecture delivered to students at the Naval Postgraduate School. I have also incorporated some suggestions contained in a handout prepared by John Odell for students in the School of International Relations at the University of Southern California.

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• Volume 39, Issue 1
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• DOI: https://doi.org/10.1017/S1049096506060264

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Political Science Honors and Graduate Guide

• General Overview
• What is a Literature Review? Where do I Begin?
• Political Science Literature (Recommended)
• The Citation Search!
• Grey Literature
• Managing All These Citations?
• International Organizations
• Assistance with Methods
• Where Are Old Honors Theses and Dissertations?
• Data Resources

Exploring Secondary Resources

Use the I-BEAM method to figure out what  work  you mean each source to do in  your  piece of writing.  I-BEAM  stands for  I nstancing,  B ackground,  E xhibit,  A rgument, &  M ethod.

Instancing  is the use of sources to indicate the context and nature of the question you are addressing, or even its very existence. 

These sources will probably show up in your introduction , to help define your project in light of what has come before and establish a context in which your reader can see the importance of your project.

Background  source use is for facts or "objective" information. You expect your reader to simply trust these outright, so they must be widely accepted in your field as credible sources for facts and information. Exhibit  sources are those you  analyze  in your essay, ultimately for evidence to help you sustain your claims and deal with counter-claims. Your analysis of these sources—through detailed description, quantitative analysis, or other methods—will likely constitute the bulk of your research essay. These are your most important "primary sources."

Argument  sources are ones you draw on for key claims, concepts (with stipulated definitions), and theories you are using and responding to in your essay. In many fields, these will be considered your most important "secondary sources." Most of these will be academic sources (academic journal articles, books or book chapters, essays in anthologies, dissertations, master's theses, etc.). Your essay might be doing any combination of  forwarding  (applying, extending, revising) or  countering  (rebutting, refuting, delineating) these arguments. Method  sources are those you use for the methods they model, especially in cases where the method itself is unique, innovative, or particularly applicable to your project. For example, you might cite and describe a certain quantitative method, adapting it for your own purposes in your essay. You might also consider as "method" sources those from which you derive your own mode of questioning, way of thinking, or style of writing. Sources influential in these more subtle ways are sometimes noted in acknowledgements or epigraphs rather than citations.

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Political Studies: Literature Review

Research methodology sources.

In the Library Catalogue , you can search for a variety of research methodolgy sources including general sources, sources specific to Political Studies, or sources about a specific research method.

Sample subject headings:

• Political Science -- Methodology
• Political Science -- Research
• Qualitative research

Sample keyword searches by research method:

• Grounded Theory
• Narrative Inquiry
• Discourse Analysis
• Mixed Methods

Critiquing Research

Coughlan, M., Cronin, P., & Ryan, F. (2007). Step-by-step guide to critiquing research. part 1: Quantitative research. British Journal of Nursing, 16(11), 658-663. 

Ryan, F., Coughlan, M., & Cronin, P. (2007). Step-by-step guide to critiquing research. part 2: Qualitative research. British Journal of Nursing, 16(12), 738-745.  

Letts, L., Wilkins, S., Law, M., Stewart, D., Bosch J., & Westmorland, M., (2007).  Critical Review Form - Qualitative Studies (version 2.0).  McMaster University.

Defining the Literature Review

These videos from North Carolina State University give a good overview of the process for conducting a  literature review.

Types of Literature Reviews

Completing a Literature Review

Sites to Further Help You

• UNC Writing Center Handout for Writing a Lit Review
• UW-Madison Writing Center Learn How to Write a Review of Literature
• University of Toronto The Literature Review: A Few Tips on Conducting It
• The Literature Review in Under 5 Minutes

Free Online Course (MOOC)

Research Writing: How to Do a Literature Review (from The University of Wollongong in Australia)

Topics covered:

• Understanding the literature review as a genre, and its fundamental role in all serious investigations and research projects
• Developing a useful list of search terms and understanding where to use them to find the most relevant literature available
• Developing a professional bibliography and annotating it with critical evaluations of readings
• Asking good questions to guide the reading and writing process
• Planning a critical discussion in response to specific questions and based on evidence from the published literature

Sources to Assist With the Writing Process

• Succeeding with your Master's Dissertation : A Step-By-Step Handbook by Biggam, John Call Number: e-book Publication Date: 2008
• The Student's Guide to Preparing Dissertations and Theses by Brian Allison and Phil Race Call Number: e-book Publication Date: 2004

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POSC 325: Political Analysis: Literature Review Tips

• Research Question Development
• Literature Review Tips
• Article Searching
• Book Searching
• Citation Style

The Literature Review

The literature review is meant to serve as preliminary research,  conducted before you write a research paper. You conduct this review of the literature after you develop a topic  that interests you, and before you solidify your position . It is both a  summary and a general timeline  of research done on the subject you're about to discuss in detail. Essentially, you're trying to:

• Determine what's already been written on a topic
• Evaluate what's already been written on a topic
• Identify gaps that haven't been heavily researched
• Join into the conversation that's already been started by other scholars

When Preparing to Write:

• Identify the most  significant studies and scholars  concerning your topic or research question. Read the works carefully and consistently and take notes
• State the  central research questions  investigated by scholars, the  key concepts , and  hypotheses advanced,  and their  methodological strengths and weaknesses
• Identify  significant trends or patterns  in the results of the studies
• Identify any  gaps  you may find in the literature - questions left unexplored, concepts or theories misused, or methodological errors made
• Think about how the  studies all fit together
• Summarize  the state of the field for this research topic

When  Writing :

• Describe the  topic or problem area . Note why the topic is important and why it is worth studying
• Identify the  research question  you are investigating or the hypothesis you are testing
• Discuss how the  previous work  (that is, its findings, methods, trends, and theories) sets the stage for your own research
• Discuss how your research effort is  similar to  or  differs from  previous ones
• Discuss what you  plan to do  in your research paper
• Write the  literature review  in an essay format with proper citations and a bibliography

Sections to Include in Your Literature Review:

• Introduction
• Literature Review
• Model and Hypothesis
• Research Design

Literature Review Source Template

Literature Review Example [Purdue Owl]

Checklist Companion to Text

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A Political Science Guide

For students, researchers, and others interested in doing the work of political science, the literature review.

Imagine that the specific topic you’re looking to conduct research on is a jigsaw puzzle of which you have no reference. The completed puzzle is the hypothetical “objective truth” about that topic – an absolute conclusion that will invariably arrived at if all the important and relevant pieces of information are placed together and made to interact. Of course, this “objective truth” can never be obtained, and therefore the puzzle can never be completed (but that’s not the point). When you approach the specific topic with your research question, you’re basically looking at the incomplete puzzle. With your work, you’re seeking to help complete it – you are to cut up your own jigsaw piece and paint it appropriately to be inserted into what is already there.

A literature review is basically a broad survey into the specific topic you’re looking to do research in. Going back to the analogy, you’re looking at the incomplete puzzle and using the contours shaped by the already fitted pieces to inform your efforts of creating the new jigsaw piece. Sometimes you find that some pieces are inappropriate for the overall puzzle, and sometimes you find that there are too many significant gaps in the first place – making any concept of the picture you’re trying to obtain incomprehensible from the get-go. But that all comes with the territory; nobody said this job was easy.

In general, the literature review process can be broken down into two portions:

• A concise summary of the relevant arguments and conclusions that have already been made about the topic.
• A personal, deliberated judgment on what you have just summarized.

With these two fundamental aspects, you can then go on to lay out where to proceed from there. However, you need to know how to get those arguments and conclusions in the first place.

Resource-Finding

Of course, begin with the Library.  Refer to the “Using the Library” section for further information on this.

Explore your faculty . Coming off several years of graduate and post-graduate as well as their own independent research, they probably know a book or two about your specific topic. They might even have it lying around in their office. Also, don’t limit yourself to professors who specialize in the field you’re interested in or just to those in your department. This is especially true if you know you’re researching a somewhat neglected or obscure line of inquiry. Your Azerbaijan History professor might know a guy who knows a guy who specializes in Post-Modern Nuclear Deterrence Fiction to whom she/he could refer you to, and so on so forth.

When you get your hands on your first few books, read through the Bibliography and References section. Take note especially of the works cited consistently across the books you’re reading – this is a good indication of a work or an argument well-accepted (or debated) among the academia of that topic.

A few words on the Internet . We are all, of course, enamored by the sheer accessibility of information that Google pampers us with, this being the digital age and all. However, be very aware and critical about the material you come across. Assessing credibility is ever so important in the expansive sea of the internet (which means, in general, never rely on Wikipedia – unless if you’re using it as a hub to get to better places). Two pretty reliable academic search engines are Google Scholar and Jstor , though the latter can only be accessed in certain Wi-Fi networks (like universities or libraries) or only if you have a subscription.

So, we’ve touched upon places you can start off with finding resources. There are probably other more crafty methods to find out useful books and articles, and if so please let us know so we can put it up here. Now that we’re done with that, let’s look at production and composition.

Writing the Review

Read the article mentioned below on “Doing a Literature Review” by Jeffrey W. Knopf. It’s a concise and effective article on the craft of doing this important step of your research/thesis, and it provides a lot of key considerations that you should be thinking about when you both survey the literature and put your review together.

A few other words:

• A Literature Review is yet another active narrative to your work. Do not simply treat it as a list; treat it as exposition. If anything, it is analogous to the first ten minutes of your basic movie: it sets up the world, the rules, and the players.
• Don’t extend your bias just yet – and don’t be biased when you’re presenting the multiple schools of thought. That just hurts your credibility if you come off the bat with it, because it renders your work somewhat subjective. A reliable piece of social science research has to have some character of objectivity, the findings have to come out from a clear consideration of all sides.

Notes on Sources

It is important, when conducting your literature review, to keep in mind that not all sources are made equally.  A familiar division is between primary, secondary, and tertiary sources (see Monmouth College description of sources ).  However, there is also the issue of source quality.  Monmouth College’s evaluation criteria are a useful place to start. UC Berkeley Library’s guide to a “Critical Evaluation of Resources” also may be helpful here. They stress keeping in mind such factors as the suitability of a source (what was its intended audience?) and its authority (what are the credentials of the author? how does that author claim to know what they know?).  It is especially important to keep such issues in mind when gathering information from the internet. Johns Hopkins University’s Guide to “Evaluating Information Found on the Internet” has this specific set of concerns in mind. One of the tricky issues that they flag is the question of using sources that appear at the top of search results.  No one has a perfect answer for how to deal with the issue and every search engine is different. But it is important to keep this in mind.

Wesleyan University Library Guide on Literature Reviews: http://libguides.wesleyan.edu/litreview

• Knopf, Jeffrey W. “ Doing a Literature Review ,” PS: Political Science & Politics 39:1, 127-132.

Abstract : Educator and naval postgraduate school professor Knopf presents a brief and wholly comprehensive summary of what is a literature review and how to write one. He also discusses some other interesting issue to consider, like contributions students can make to their fields of interest and the techniques of framing.

• “ Literature Review Handout, ” prepared by The Writing Center, University of North Carolina in Chapel Hill.

Contributor: Nicholas Quah

updated January 18, 2024 – MN

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Political Science : Literature Reviews

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Literature Reviews

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What is a literature review?

A literature review discusses published information in a particular subject area. It can be just a simple summary of the sources, but it usually has an organizational pattern and combines both summary and synthesis . A summary is a recap of the important information of the source, but a synthesis is a re-organization, or a reshuffling, of that information. It might give a new interpretation of old material or combine new with old interpretations. Or it might trace the intellectual progression of the field, including major debates. And depending on the situation, the literature review may evaluate the sources and advise the reader on the most pertinent or relevant.

Writing a literature review

A literature review, like a term paper, is usually organized around ideas, not the sources themselves as an annotated bibliography would be organized. This means that you will not just simply list your sources and go into detail about each one of them, one at a time.  As you read widely in your topic area, consider instead what themes or issues connect your sources together. Do they present one or different solutions? Is there an aspect of the field that is missing? How well do they present the material and do they portray it according to an appropriate theory? Do they reveal a trend in the field? A raging debate? You may want to pick one of these themes to focus the organization of your review.

(This section was adapted from the University of North Carolina Writing Center's Guide to Literature Reviews .)

Sources to Help You

Writing a Literature Review and Using a Synthesis Matrix

Ten Simple Rules for Writing a Literature Review

• Concept Map Streamline your searching by expanding your list of keywords/search terms.
• Academic Reading Strategies Provides tips for deeper understanding of what you read.
• Literature Review Matrix: Summarize and Synthesize A tool to help you summarize and synthesize what you find.
• Guide for Writing in Political Science (Southwestern Univ.)

TIP:    Look for other literature reviews in your subject area to see how they are written.  Use the keyword "literature review."

The Writing Process

Research is only half of the equation when you're working on an academic project.  You must now synthesize your ideas and sources into a logical, coherent product.  Here are some links that will help you with this process.

• Citation Guides Now that you've researched, written and revised, it's time to properly cite your sources. These guides will help you to give attribution to your references. There's a tab on the guide with information about Citation Managers (e.g. RefWorks, Zotero).
• APSA Style Guide
• APSA Style tip sheet
• Writing Process Map
• How to Start Your Research: A DIY Guide by Benjamin Hoover Last Updated Jun 13, 2024 588 views this year

Key Features of Empirical Research

These are some key features to look for when identifying empirical research in political science.

NOTE:  Not all of these features will be in every empirical research article, some may be excluded, use this only as a guide.

• Statement of methodology
• Research questions are clear and measurable
• Individuals, group, subjects which are being studied are identified/defined
• Data is presented regarding the findings
• Controls or instruments such as surveys or tests were conducted
• There is a literature review
• There is discussion of the results included
• Citations/references are included

Some useful keywords may be...

• Action Research
• Case Studies
• Ethnography
• Evaluation Methods
• Evaluation Research
• Experiments
• Focus Groups
• Field Studies
• Qualitative Research
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Political science.

• Reference Works
• Literature Review
• Associations
• Annual Reviews*
• Annual Review of Political Science * "The Annual Review of Political Science, in publication since 1998, covers significant developments in the field of Political Science including political theory and philosophy, international relations, political economy, political behavior, American and comparative politics, public administration and policy, and methodology."
• Annual Reviews * Annual Review publications are among the most highly cited in scholarly literature. Annual Reviews are published each year for 46 disciplines including the Social Sciences.

"Writing A Literature Review Is An Inevitable Part of Being A Graduate Student" (NCSU)

Annual Reviews* - The Ultimate Lit Review

"Annual Review articles hold a unique place in the scholarly communication ecosystem because they transfer expert knowledge synthesized from the exponentially expanding corpus of scientific literature to scholars and society. To create this impactful content, we bring together expert Editorial Committees in each covered discipline and facilitate meetings where members can discuss trends in each field and select relevant topics for review. Authoritative authors are then invited to submit reviews, and they readily accept the challenge to help shape and define their field as a service to scholars and society. The number of Annual Review journals continues to grow over a broad range of disciplines within the Biomedical, Life, Physical, and Social Sciences, including Economics. The creation of a new title indicates that the amount of original research in a field has reached a critical mass."

Sample Literature Review

• Song, S. (2018). Political Theories of Migration. Annual Review of Political Science, 21, 385-402. Abstract : The topic of migration raises important and challenging normative questions about the legitimacy of state power, the boundaries of political membership, and justice within and across state borders. States exercise power over borders, but what, if anything, justifies this power? Is it morally permissible for liberal democratic states to prevent their citizens from exiting the country and exclude prospective migrants from entering? If liberal democratic states are justified in excluding some and accepting others, how should they decide whom to admit? This review examines how contemporary political theorists and philosophers have answered these questions. First, I examine the conventional view that says states have the right to control immigration; second, I discuss arguments for open borders. The third section examines critique of open borders, and the fourth section considers more recent arguments that have been advanced in favor of the conventional view. I conclude with some suggestions for future research. Keywords : borders, migration, emigration, immigration, refugees. APA Cite : Song, S. (2018). Political Theories of Migration. Annual Review of Political Science, 21, 385-402. Author : Sarah Song, School of Law and Department of Political Science, University of California, Berkeley, California 94720, USA; email: [email protected]
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The Relevance of Political Awareness: A Literature Review with Meta-Analysis

• First Online: 10 December 2021

Cite this chapter

• Carl Görtz 5  

484 Accesses

3 Citations

Has research overlooked causes of citizens’ political awareness—and are the empirical merits, connected to political awareness, not that convincing as we thought? Recently, such topics have been discussed among scholars. Although, information about the state and development of the research is substandard. Therefore, this chapter provides an extensive literature review that focuses on how studies have theoretically employed the concept of political awareness and on results about the relevance of political awareness. The results from analyzing 78 articles are as follows. (1) Most of the research on political awareness uses political awareness as a moderating variable (38.4%), followed by nearly equal proportions of studies using political awareness as either an independent (20.5%) or dependent variable (24.3%), and a small number of studies using political awareness as an intervening variable. (2) The assessment of the empirical evidence brought forward in these studies, through meta-analysis, shows that an overwhelming majority of the research report positive and significant results. Suggesting that the field is essentially in agreement, the influence of the social world on public opinion and political behavior is far from equally distributed among the citizenry. Such effects are depended on citizens’ (levels of) political awareness.

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Conclusion: Rethinking Politicisation: What Have We Learned?

Casting light on citizens’ conceptions of what is ‘political’

Perceptions of politics and their implications: exploring the link between conceptualisations of politics and political participation

Studies marked * are included in the analyses.

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*Bartle, J. (2000). Political awareness, opinion constraint and the stability of ideological position. Political Studies, 48 (3), 467–484.

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*Busemeyer, M. R., Lergetporer, P., & Woessmann, L. (2018). Public opinion and the political economy of educational reforms: A survey. European Journal of Political Economy, 53 (3), 161–185.

Bushman, B. J. (1994). Vote-counting procedures in meta-analysis. In H. Cooper & L. V. Hedges (Eds.), The handbook of research synthesis (pp. 194–213). Russell Sage Foundation.

*Çakir, A. A., & Şekercioğlu, E. (2016). Public confidence in judiciary: The interaction between political awareness and levels of democracy. Democratization, 23 (4), 634–656.

Cancela, J., & Geys, B. (2016). Explaining voter turnout: A meta-analysis of national and subnational elections. Electoral Studies, 42 (2), 264–275.

*Carrubba, C. J., & Murrah, L. (2005). Legal integration and use of the preliminary ruling process in the European Union. International Organization, 59 (2), 399–418.

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*Claassen, R. L. (2011a). Political awareness and electoral campaigns: Maximum effects for minimum citizens. Political Behavior, 33 (3), 203–223.

*Claassen, R. L. (2011b). Political awareness and partisan realignment: Are the unaware unevolved? Political Research Quarterly, 64 (4), 818–830.

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*Collet, C., & Kato, G. (2014). Does NHK make you smarter (and super news make you ‘softer’): an examination of Japanese political knowledge and the potential influence of TV news. Japanese Journal of Political Science, 15 (1), 23–50.

Converse, P. E. (2006). The nature of belief system in mass publics (1964). Critical Review, 18 (1–3), 1–74.

*Croke, K., Grossman, G., Larreguy, H. A., & Marshall, J. (2016). Deliberate disengagement: How education can decrease political participation in electoral authoritarian regimes. American Political Science Review, 110 (3), 579–600.

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de Almeida Teles J. (2017). The Araguaia Guerrilla War (1972–1974): Armed Resistance to the Brazilian Dictatorship. Latin American Perspectives, 44 (5), 30–52.

*Denemark, D. (2002). Television effects and voter decision making in Australia: A re-examination of the converse model. British Journal of Political Science, 32 (4), 663–690.

*Dobrzynska, A., & Blais, A. (2008). Testing Zaller’s reception and acceptance model in an intense election campaign. Political Behavior, 30 (3), 259–276.

Doucouliagos, H., & Ulubaşuğlu, M. A. (2008). Democracy and economic growth: A meta-analysis. American Journal of Political Science, 52 (1), 61–83.

*Dragojlovic, N. (2011). Priming and the Obama effect on public evaluations on the United States. Political Psychology, 32 (6), 989–1006.

*Dragojlovic, N. (2013). Leaders without borders: Familiarity as a moderator of transnational Source cue effects. Political Communication, 30 (2), 297–316.

*Dragojlovic, N. (2015). Listening to outsiders: The Impact of messenger nationality on transnational persuasion in the United States. International Studies Quarterly, 59 (1), 73–85.

*Drury, A. C., Overby, L. M., Ang, A., & Li, Y. (2010). ‘Pretty prudent’ or rhetorically responsive? The American public’s support for military action. Political Research Quarterly, 63 (1), 83–96.

Enns, P. K., & Kellstedt, P. M. (2008). Policy mood and political sophistication: Why everybody moves mood. British Journal of Political Science, 38 (4), 433–454.

Fink, A. (2014). Conducting research literature reviews: From the internet to paper . SAGE Publications.

*Gabel, M., & Scheve, K. (2007). Estimating the effect of elite communication on public opinion using instrumental variables. American Journal of Political Science, 51 (4), 1013–1028.

*Gattermann, K., de Vreese, C. H., & van der Brug, W. (2016). Evaluations of the Spitzenkandidaten: the role of information and news exposure in citizens’ preference formation. Politics and Governance, 4 (1), 37–54.

Geys, B. (2006). Explaining voter turnout: A review of aggregate-level research. Electoral Studies, 25 (4), 637–663.

*Geys, B., Heinemann, F., & Kalb, A. (2010). Voter involvement, fiscal autonomy and public sector efficiency: evidence from German municipalities. European Journal of Political Economy, 26 (2), 265–278.

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Görtz, C. (2022). The Relevance of Political Awareness: A Literature Review with Meta-Analysis. In: Kristensen, N.N., Denk, T., Olson, M., Solhaug, T. (eds) Perspectives on Political Awareness. Springer, Cham. https://doi.org/10.1007/978-3-030-90394-7_2

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Why is it important to do a literature review in research?

The importance of scientific communication in the healthcare industry

The Importance and Role of Biostatistics in Clinical Research

 “A substantive, thorough, sophisticated literature review is a precondition for doing substantive, thorough, sophisticated research”. Boote and Baile 2005

Authors of manuscripts treat writing a literature review as a routine work or a mere formality. But a seasoned one knows the purpose and importance of a well-written literature review.  Since it is one of the basic needs for researches at any level, they have to be done vigilantly. Only then the reader will know that the basics of research have not been neglected.

The aim of any literature review is to summarize and synthesize the arguments and ideas of existing knowledge in a particular field without adding any new contributions.   Being built on existing knowledge they help the researcher to even turn the wheels of the topic of research.  It is possible only with profound knowledge of what is wrong in the existing findings in detail to overpower them.  For other researches, the literature review gives the direction to be headed for its success. 

The common perception of literature review and reality:

As per the common belief, literature reviews are only a summary of the sources related to the research. And many authors of scientific manuscripts believe that they are only surveys of what are the researches are done on the chosen topic.  But on the contrary, it uses published information from pertinent and relevant sources like

• Scholarly books
• Scientific papers
• Latest studies in the field
• Established school of thoughts
• Relevant articles from renowned scientific journals

and many more for a field of study or theory or a particular problem to do the following:

• Summarize into a brief account of all information
• Synthesize the information by restructuring and reorganizing
• Critical evaluation of a concept or a school of thought or ideas
• Familiarize the authors to the extent of knowledge in the particular field
• Encapsulate
• Compare & contrast

By doing the above on the relevant information, it provides the reader of the scientific manuscript with the following for a better understanding of it:

• It establishes the authors’  in-depth understanding and knowledge of their field subject
• It gives the background of the research
• Portrays the scientific manuscript plan of examining the research result
• Illuminates on how the knowledge has changed within the field
• Highlights what has already been done in a particular field
• Information of the generally accepted facts, emerging and current state of the topic of research
• Identifies the research gap that is still unexplored or under-researched fields
• Demonstrates how the research fits within a larger field of study
• Provides an overview of the sources explored during the research of a particular topic

Importance of literature review in research:

The importance of literature review in scientific manuscripts can be condensed into an analytical feature to enable the multifold reach of its significance.  It adds value to the legitimacy of the research in many ways:

• Provides the interpretation of existing literature in light of updated developments in the field to help in establishing the consistency in knowledge and relevancy of existing materials
• It helps in calculating the impact of the latest information in the field by mapping their progress of knowledge.
• It brings out the dialects of contradictions between various thoughts within the field to establish facts
• The research gaps scrutinized initially are further explored to establish the latest facts of theories to add value to the field
• Indicates the current research place in the schema of a particular field
• Provides information for relevancy and coherency to check the research
• Apart from elucidating the continuance of knowledge, it also points out areas that require further investigation and thus aid as a starting point of any future research
• Justifies the research and sets up the research question
• Sets up a theoretical framework comprising the concepts and theories of the research upon which its success can be judged
• Helps to adopt a more appropriate methodology for the research by examining the strengths and weaknesses of existing research in the same field
• Increases the significance of the results by comparing it with the existing literature
• Provides a point of reference by writing the findings in the scientific manuscript
• Helps to get the due credit from the audience for having done the fact-finding and fact-checking mission in the scientific manuscripts
• The more the reference of relevant sources of it could increase more of its trustworthiness with the readers
• Helps to prevent plagiarism by tailoring and uniquely tweaking the scientific manuscript not to repeat other’s original idea
• By preventing plagiarism , it saves the scientific manuscript from rejection and thus also saves a lot of time and money
• Helps to evaluate, condense and synthesize gist in the author’s own words to sharpen the research focus
• Helps to compare and contrast to  show the originality and uniqueness of the research than that of the existing other researches
• Rationalizes the need for conducting the particular research in a specified field
• Helps to collect data accurately for allowing any new methodology of research than the existing ones
• Enables the readers of the manuscript to answer the following questions of its readers for its better chances for publication
• What do the researchers know?
• What do they not know?
• Is the scientific manuscript reliable and trustworthy?
• What are the knowledge gaps of the researcher?

22. It helps the readers to identify the following for further reading of the scientific manuscript:

• What has been already established, discredited and accepted in the particular field of research
• Areas of controversy and conflicts among different schools of thought
• Unsolved problems and issues in the connected field of research
• The emerging trends and approaches
• How the research extends, builds upon and leaves behind from the previous research

A profound literature review with many relevant sources of reference will enhance the chances of the scientific manuscript publication in renowned and reputed scientific journals .

References:

http://www.math.montana.edu/jobo/phdprep/phd6.pdf

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Approaching literature review for academic purposes: The Literature Review Checklist

Debora f.b. leite.

I Departamento de Ginecologia e Obstetricia, Faculdade de Ciencias Medicas, Universidade Estadual de Campinas, Campinas, SP, BR

II Universidade Federal de Pernambuco, Pernambuco, PE, BR

III Hospital das Clinicas, Universidade Federal de Pernambuco, Pernambuco, PE, BR

Maria Auxiliadora Soares Padilha

Jose g. cecatti.

A sophisticated literature review (LR) can result in a robust dissertation/thesis by scrutinizing the main problem examined by the academic study; anticipating research hypotheses, methods and results; and maintaining the interest of the audience in how the dissertation/thesis will provide solutions for the current gaps in a particular field. Unfortunately, little guidance is available on elaborating LRs, and writing an LR chapter is not a linear process. An LR translates students’ abilities in information literacy, the language domain, and critical writing. Students in postgraduate programs should be systematically trained in these skills. Therefore, this paper discusses the purposes of LRs in dissertations and theses. Second, the paper considers five steps for developing a review: defining the main topic, searching the literature, analyzing the results, writing the review and reflecting on the writing. Ultimately, this study proposes a twelve-item LR checklist. By clearly stating the desired achievements, this checklist allows Masters and Ph.D. students to continuously assess their own progress in elaborating an LR. Institutions aiming to strengthen students’ necessary skills in critical academic writing should also use this tool.

INTRODUCTION

Writing the literature review (LR) is often viewed as a difficult task that can be a point of writer’s block and procrastination ( 1 ) in postgraduate life. Disagreements on the definitions or classifications of LRs ( 2 ) may confuse students about their purpose and scope, as well as how to perform an LR. Interestingly, at many universities, the LR is still an important element in any academic work, despite the more recent trend of producing scientific articles rather than classical theses.

The LR is not an isolated section of the thesis/dissertation or a copy of the background section of a research proposal. It identifies the state-of-the-art knowledge in a particular field, clarifies information that is already known, elucidates implications of the problem being analyzed, links theory and practice ( 3 - 5 ), highlights gaps in the current literature, and places the dissertation/thesis within the research agenda of that field. Additionally, by writing the LR, postgraduate students will comprehend the structure of the subject and elaborate on their cognitive connections ( 3 ) while analyzing and synthesizing data with increasing maturity.

At the same time, the LR transforms the student and hints at the contents of other chapters for the reader. First, the LR explains the research question; second, it supports the hypothesis, objectives, and methods of the research project; and finally, it facilitates a description of the student’s interpretation of the results and his/her conclusions. For scholars, the LR is an introductory chapter ( 6 ). If it is well written, it demonstrates the student’s understanding of and maturity in a particular topic. A sound and sophisticated LR can indicate a robust dissertation/thesis.

A consensus on the best method to elaborate a dissertation/thesis has not been achieved. The LR can be a distinct chapter or included in different sections; it can be part of the introduction chapter, part of each research topic, or part of each published paper ( 7 ). However, scholars view the LR as an integral part of the main body of an academic work because it is intrinsically connected to other sections ( Figure 1 ) and is frequently present. The structure of the LR depends on the conventions of a particular discipline, the rules of the department, and the student’s and supervisor’s areas of expertise, needs and interests.

Interestingly, many postgraduate students choose to submit their LR to peer-reviewed journals. As LRs are critical evaluations of current knowledge, they are indeed publishable material, even in the form of narrative or systematic reviews. However, systematic reviews have specific patterns 1 ( 8 ) that may not entirely fit with the questions posed in the dissertation/thesis. Additionally, the scope of a systematic review may be too narrow, and the strict criteria for study inclusion may omit important information from the dissertation/thesis. Therefore, this essay discusses the definition of an LR is and methods to develop an LR in the context of an academic dissertation/thesis. Finally, we suggest a checklist to evaluate an LR.

WHAT IS A LITERATURE REVIEW IN A THESIS?

Conducting research and writing a dissertation/thesis translates rational thinking and enthusiasm ( 9 ). While a strong body of literature that instructs students on research methodology, data analysis and writing scientific papers exists, little guidance on performing LRs is available. The LR is a unique opportunity to assess and contrast various arguments and theories, not just summarize them. The research results should not be discussed within the LR, but the postgraduate student tends to write a comprehensive LR while reflecting on his or her own findings ( 10 ).

Many people believe that writing an LR is a lonely and linear process. Supervisors or the institutions assume that the Ph.D. student has mastered the relevant techniques and vocabulary associated with his/her subject and conducts a self-reflection about previously published findings. Indeed, while elaborating the LR, the student should aggregate diverse skills, which mainly rely on his/her own commitment to mastering them. Thus, less supervision should be required ( 11 ). However, the parameters described above might not currently be the case for many students ( 11 , 12 ), and the lack of formal and systematic training on writing LRs is an important concern ( 11 ).

An institutional environment devoted to active learning will provide students the opportunity to continuously reflect on LRs, which will form a dialogue between the postgraduate student and the current literature in a particular field ( 13 ). Postgraduate students will be interpreting studies by other researchers, and, according to Hart (1998) ( 3 ), the outcomes of the LR in a dissertation/thesis include the following:

• To identify what research has been performed and what topics require further investigation in a particular field of knowledge;
• To determine the context of the problem;
• To recognize the main methodologies and techniques that have been used in the past;
• To place the current research project within the historical, methodological and theoretical context of a particular field;
• To identify significant aspects of the topic;
• To elucidate the implications of the topic;
• To offer an alternative perspective;
• To discern how the studied subject is structured;
• To improve the student’s subject vocabulary in a particular field; and
• To characterize the links between theory and practice.

A sound LR translates the postgraduate student’s expertise in academic and scientific writing: it expresses his/her level of comfort with synthesizing ideas ( 11 ). The LR reveals how well the postgraduate student has proceeded in three domains: an effective literature search, the language domain, and critical writing.

Effective literature search

All students should be trained in gathering appropriate data for specific purposes, and information literacy skills are a cornerstone. These skills are defined as “an individual’s ability to know when they need information, to identify information that can help them address the issue or problem at hand, and to locate, evaluate, and use that information effectively” ( 14 ). Librarian support is of vital importance in coaching the appropriate use of Boolean logic (AND, OR, NOT) and other tools for highly efficient literature searches (e.g., quotation marks and truncation), as is the appropriate management of electronic databases.

Language domain

Academic writing must be concise and precise: unnecessary words distract the reader from the essential content ( 15 ). In this context, reading about issues distant from the research topic ( 16 ) may increase students’ general vocabulary and familiarity with grammar. Ultimately, reading diverse materials facilitates and encourages the writing process itself.

Critical writing

Critical judgment includes critical reading, thinking and writing. It supposes a student’s analytical reflection about what he/she has read. The student should delineate the basic elements of the topic, characterize the most relevant claims, identify relationships, and finally contrast those relationships ( 17 ). Each scientific document highlights the perspective of the author, and students will become more confident in judging the supporting evidence and underlying premises of a study and constructing their own counterargument as they read more articles. A paucity of integration or contradictory perspectives indicates lower levels of cognitive complexity ( 12 ).

Thus, while elaborating an LR, the postgraduate student should achieve the highest category of Bloom’s cognitive skills: evaluation ( 12 ). The writer should not only summarize data and understand each topic but also be able to make judgments based on objective criteria, compare resources and findings, identify discrepancies due to methodology, and construct his/her own argument ( 12 ). As a result, the student will be sufficiently confident to show his/her own voice .

Writing a consistent LR is an intense and complex activity that reveals the training and long-lasting academic skills of a writer. It is not a lonely or linear process. However, students are unlikely to be prepared to write an LR if they have not mastered the aforementioned domains ( 10 ). An institutional environment that supports student learning is crucial.

Different institutions employ distinct methods to promote students’ learning processes. First, many universities propose modules to develop behind the scenes activities that enhance self-reflection about general skills (e.g., the skills we have mastered and the skills we need to develop further), behaviors that should be incorporated (e.g., self-criticism about one’s own thoughts), and each student’s role in the advancement of his/her field. Lectures or workshops about LRs themselves are useful because they describe the purposes of the LR and how it fits into the whole picture of a student’s work. These activities may explain what type of discussion an LR must involve, the importance of defining the correct scope, the reasons to include a particular resource, and the main role of critical reading.

Some pedagogic services that promote a continuous improvement in study and academic skills are equally important. Examples include workshops about time management, the accomplishment of personal objectives, active learning, and foreign languages for nonnative speakers. Additionally, opportunities to converse with other students promotes an awareness of others’ experiences and difficulties. Ultimately, the supervisor’s role in providing feedback and setting deadlines is crucial in developing students’ abilities and in strengthening students’ writing quality ( 12 ).

HOW SHOULD A LITERATURE REVIEW BE DEVELOPED?

A consensus on the appropriate method for elaborating an LR is not available, but four main steps are generally accepted: defining the main topic, searching the literature, analyzing the results, and writing ( 6 ). We suggest a fifth step: reflecting on the information that has been written in previous publications ( Figure 2 ).

First step: Defining the main topic

Planning an LR is directly linked to the research main question of the thesis and occurs in parallel to students’ training in the three domains discussed above. The planning stage helps organize ideas, delimit the scope of the LR ( 11 ), and avoid the wasting of time in the process. Planning includes the following steps:

• Reflecting on the scope of the LR: postgraduate students will have assumptions about what material must be addressed and what information is not essential to an LR ( 13 , 18 ). Cooper’s Taxonomy of Literature Reviews 2 systematizes the writing process through six characteristics and nonmutually exclusive categories. The focus refers to the reviewer’s most important points of interest, while the goals concern what students want to achieve with the LR. The perspective assumes answers to the student’s own view of the LR and how he/she presents a particular issue. The coverage defines how comprehensive the student is in presenting the literature, and the organization determines the sequence of arguments. The audience is defined as the group for whom the LR is written.
• Designating sections and subsections: Headings and subheadings should be specific, explanatory and have a coherent sequence throughout the text ( 4 ). They simulate an inverted pyramid, with an increasing level of reflection and depth of argument.
• Identifying keywords: The relevant keywords for each LR section should be listed to guide the literature search. This list should mirror what Hart (1998) ( 3 ) advocates as subject vocabulary . The keywords will also be useful when the student is writing the LR since they guide the reader through the text.
• Delineating the time interval and language of documents to be retrieved in the second step. The most recently published documents should be considered, but relevant texts published before a predefined cutoff year can be included if they are classic documents in that field. Extra care should be employed when translating documents.

Second step: Searching the literature

The ability to gather adequate information from the literature must be addressed in postgraduate programs. Librarian support is important, particularly for accessing difficult texts. This step comprises the following components:

• Searching the literature itself: This process consists of defining which databases (electronic or dissertation/thesis repositories), official documents, and books will be searched and then actively conducting the search. Information literacy skills have a central role in this stage. While searching electronic databases, controlled vocabulary (e.g., Medical Subject Headings, or MeSH, for the PubMed database) or specific standardized syntax rules may need to be applied.

In addition, two other approaches are suggested. First, a review of the reference list of each document might be useful for identifying relevant publications to be included and important opinions to be assessed. This step is also relevant for referencing the original studies and leading authors in that field. Moreover, students can directly contact the experts on a particular topic to consult with them regarding their experience or use them as a source of additional unpublished documents.

Before submitting a dissertation/thesis, the electronic search strategy should be repeated. This process will ensure that the most recently published papers will be considered in the LR.

• Selecting documents for inclusion: Generally, the most recent literature will be included in the form of published peer-reviewed papers. Assess books and unpublished material, such as conference abstracts, academic texts and government reports, are also important to assess since the gray literature also offers valuable information. However, since these materials are not peer-reviewed, we recommend that they are carefully added to the LR.

This task is an important exercise in time management. First, students should read the title and abstract to understand whether that document suits their purposes, addresses the research question, and helps develop the topic of interest. Then, they should scan the full text, determine how it is structured, group it with similar documents, and verify whether other arguments might be considered ( 5 ).

Third step: Analyzing the results

Critical reading and thinking skills are important in this step. This step consists of the following components:

• Reading documents: The student may read various texts in depth according to LR sections and subsections ( defining the main topic ), which is not a passive activity ( 1 ). Some questions should be asked to practice critical analysis skills, as listed below. Is the research question evident and articulated with previous knowledge? What are the authors’ research goals and theoretical orientations, and how do they interact? Are the authors’ claims related to other scholars’ research? Do the authors consider different perspectives? Was the research project designed and conducted properly? Are the results and discussion plausible, and are they consistent with the research objectives and methodology? What are the strengths and limitations of this work? How do the authors support their findings? How does this work contribute to the current research topic? ( 1 , 19 )
• Taking notes: Students who systematically take notes on each document are more readily able to establish similarities or differences with other documents and to highlight personal observations. This approach reinforces the student’s ideas about the next step and helps develop his/her own academic voice ( 1 , 13 ). Voice recognition software ( 16 ), mind maps ( 5 ), flowcharts, tables, spreadsheets, personal comments on the referenced texts, and note-taking apps are all available tools for managing these observations, and the student him/herself should use the tool that best improves his/her learning. Additionally, when a student is considering submitting an LR to a peer-reviewed journal, notes should be taken on the activities performed in all five steps to ensure that they are able to be replicated.

Fourth step: Writing

The recognition of when a student is able and ready to write after a sufficient period of reading and thinking is likely a difficult task. Some students can produce a review in a single long work session. However, as discussed above, writing is not a linear process, and students do not need to write LRs according to a specific sequence of sections. Writing an LR is a time-consuming task, and some scholars believe that a period of at least six months is sufficient ( 6 ). An LR, and academic writing in general, expresses the writer’s proper thoughts, conclusions about others’ work ( 6 , 10 , 13 , 16 ), and decisions about methods to progress in the chosen field of knowledge. Thus, each student is expected to present a different learning and writing trajectory.

In this step, writing methods should be considered; then, editing, citing and correct referencing should complete this stage, at least temporarily. Freewriting techniques may be a good starting point for brainstorming ideas and improving the understanding of the information that has been read ( 1 ). Students should consider the following parameters when creating an agenda for writing the LR: two-hour writing blocks (at minimum), with prespecified tasks that are possible to complete in one section; short (minutes) and long breaks (days or weeks) to allow sufficient time for mental rest and reflection; and short- and long-term goals to motivate the writing itself ( 20 ). With increasing experience, this scheme can vary widely, and it is not a straightforward rule. Importantly, each discipline has a different way of writing ( 1 ), and each department has its own preferred styles for citations and references.

Fifth step: Reflecting on the writing

In this step, the postgraduate student should ask him/herself the same questions as in the analyzing the results step, which can take more time than anticipated. Ambiguities, repeated ideas, and a lack of coherence may not be noted when the student is immersed in the writing task for long periods. The whole effort will likely be a work in progress, and continuous refinements in the written material will occur once the writing process has begun.

LITERATURE REVIEW CHECKLIST

In contrast to review papers, the LR of a dissertation/thesis should not be a standalone piece or work. Instead, it should present the student as a scholar and should maintain the interest of the audience in how that dissertation/thesis will provide solutions for the current gaps in a particular field.

A checklist for evaluating an LR is convenient for students’ continuous academic development and research transparency: it clearly states the desired achievements for the LR of a dissertation/thesis. Here, we present an LR checklist developed from an LR scoring rubric ( 11 ). For a critical analysis of an LR, we maintain the five categories but offer twelve criteria that are not scaled ( Figure 3 ). The criteria all have the same importance and are not mutually exclusive.

First category: Coverage

1. justified criteria exist for the inclusion and exclusion of literature in the review.

This criterion builds on the main topic and areas covered by the LR ( 18 ). While experts may be confident in retrieving and selecting literature, postgraduate students must convince their audience about the adequacy of their search strategy and their reasons for intentionally selecting what material to cover ( 11 ). References from different fields of knowledge provide distinct perspective, but narrowing the scope of coverage may be important in areas with a large body of existing knowledge.

Second category: Synthesis

2. a critical examination of the state of the field exists.

A critical examination is an assessment of distinct aspects in the field ( 1 ) along with a constructive argument. It is not a negative critique but an expression of the student’s understanding of how other scholars have added to the topic ( 1 ), and the student should analyze and contextualize contradictory statements. A writer’s personal bias (beliefs or political involvement) have been shown to influence the structure and writing of a document; therefore, the cultural and paradigmatic background guide how the theories are revised and presented ( 13 ). However, an honest judgment is important when considering different perspectives.

3. The topic or problem is clearly placed in the context of the broader scholarly literature

The broader scholarly literature should be related to the chosen main topic for the LR ( how to develop the literature review section). The LR can cover the literature from one or more disciplines, depending on its scope, but it should always offer a new perspective. In addition, students should be careful in citing and referencing previous publications. As a rule, original studies and primary references should generally be included. Systematic and narrative reviews present summarized data, and it may be important to cite them, particularly for issues that should be understood but do not require a detailed description. Similarly, quotations highlight the exact statement from another publication. However, excessive referencing may disclose lower levels of analysis and synthesis by the student.

4. The LR is critically placed in the historical context of the field

Situating the LR in its historical context shows the level of comfort of the student in addressing a particular topic. Instead of only presenting statements and theories in a temporal approach, which occasionally follows a linear timeline, the LR should authentically characterize the student’s academic work in the state-of-art techniques in their particular field of knowledge. Thus, the LR should reinforce why the dissertation/thesis represents original work in the chosen research field.

5. Ambiguities in definitions are considered and resolved

Distinct theories on the same topic may exist in different disciplines, and one discipline may consider multiple concepts to explain one topic. These misunderstandings should be addressed and contemplated. The LR should not synthesize all theories or concepts at the same time. Although this approach might demonstrate in-depth reading on a particular topic, it can reveal a student’s inability to comprehend and synthesize his/her research problem.

6. Important variables and phenomena relevant to the topic are articulated

The LR is a unique opportunity to articulate ideas and arguments and to purpose new relationships between them ( 10 , 11 ). More importantly, a sound LR will outline to the audience how these important variables and phenomena will be addressed in the current academic work. Indeed, the LR should build a bidirectional link with the remaining sections and ground the connections between all of the sections ( Figure 1 ).

7. A synthesized new perspective on the literature has been established

The LR is a ‘creative inquiry’ ( 13 ) in which the student elaborates his/her own discourse, builds on previous knowledge in the field, and describes his/her own perspective while interpreting others’ work ( 13 , 17 ). Thus, students should articulate the current knowledge, not accept the results at face value ( 11 , 13 , 17 ), and improve their own cognitive abilities ( 12 ).

Third category: Methodology

8. the main methodologies and research techniques that have been used in the field are identified and their advantages and disadvantages are discussed.

The LR is expected to distinguish the research that has been completed from investigations that remain to be performed, address the benefits and limitations of the main methods applied to date, and consider the strategies for addressing the expected limitations described above. While placing his/her research within the methodological context of a particular topic, the LR will justify the methodology of the study and substantiate the student’s interpretations.

9. Ideas and theories in the field are related to research methodologies

The audience expects the writer to analyze and synthesize methodological approaches in the field. The findings should be explained according to the strengths and limitations of previous research methods, and students must avoid interpretations that are not supported by the analyzed literature. This criterion translates to the student’s comprehension of the applicability and types of answers provided by different research methodologies, even those using a quantitative or qualitative research approach.

Fourth category: Significance

10. the scholarly significance of the research problem is rationalized.

The LR is an introductory section of a dissertation/thesis and will present the postgraduate student as a scholar in a particular field ( 11 ). Therefore, the LR should discuss how the research problem is currently addressed in the discipline being investigated or in different disciplines, depending on the scope of the LR. The LR explains the academic paradigms in the topic of interest ( 13 ) and methods to advance the field from these starting points. However, an excess number of personal citations—whether referencing the student’s research or studies by his/her research team—may reflect a narrow literature search and a lack of comprehensive synthesis of ideas and arguments.

11. The practical significance of the research problem is rationalized

The practical significance indicates a student’s comprehensive understanding of research terminology (e.g., risk versus associated factor), methodology (e.g., efficacy versus effectiveness) and plausible interpretations in the context of the field. Notably, the academic argument about a topic may not always reflect the debate in real life terms. For example, using a quantitative approach in epidemiology, statistically significant differences between groups do not explain all of the factors involved in a particular problem ( 21 ). Therefore, excessive faith in p -values may reflect lower levels of critical evaluation of the context and implications of a research problem by the student.

Fifth category: Rhetoric

12. the lr was written with a coherent, clear structure that supported the review.

This category strictly relates to the language domain: the text should be coherent and presented in a logical sequence, regardless of which organizational ( 18 ) approach is chosen. The beginning of each section/subsection should state what themes will be addressed, paragraphs should be carefully linked to each other ( 10 ), and the first sentence of each paragraph should generally summarize the content. Additionally, the student’s statements are clear, sound, and linked to other scholars’ works, and precise and concise language that follows standardized writing conventions (e.g., in terms of active/passive voice and verb tenses) is used. Attention to grammar, such as orthography and punctuation, indicates prudence and supports a robust dissertation/thesis. Ultimately, all of these strategies provide fluency and consistency for the text.

Although the scoring rubric was initially proposed for postgraduate programs in education research, we are convinced that this checklist is a valuable tool for all academic areas. It enables the monitoring of students’ learning curves and a concentrated effort on any criteria that are not yet achieved. For institutions, the checklist is a guide to support supervisors’ feedback, improve students’ writing skills, and highlight the learning goals of each program. These criteria do not form a linear sequence, but ideally, all twelve achievements should be perceived in the LR.

CONCLUSIONS

A single correct method to classify, evaluate and guide the elaboration of an LR has not been established. In this essay, we have suggested directions for planning, structuring and critically evaluating an LR. The planning of the scope of an LR and approaches to complete it is a valuable effort, and the five steps represent a rational starting point. An institutional environment devoted to active learning will support students in continuously reflecting on LRs, which will form a dialogue between the writer and the current literature in a particular field ( 13 ).

The completion of an LR is a challenging and necessary process for understanding one’s own field of expertise. Knowledge is always transitory, but our responsibility as scholars is to provide a critical contribution to our field, allowing others to think through our work. Good researchers are grounded in sophisticated LRs, which reveal a writer’s training and long-lasting academic skills. We recommend using the LR checklist as a tool for strengthening the skills necessary for critical academic writing.

AUTHOR CONTRIBUTIONS

Leite DFB has initially conceived the idea and has written the first draft of this review. Padilha MAS and Cecatti JG have supervised data interpretation and critically reviewed the manuscript. All authors have read the draft and agreed with this submission. Authors are responsible for all aspects of this academic piece.

ACKNOWLEDGMENTS

We are grateful to all of the professors of the ‘Getting Started with Graduate Research and Generic Skills’ module at University College Cork, Cork, Ireland, for suggesting and supporting this article. Funding: DFBL has granted scholarship from Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES) to take part of her Ph.D. studies in Ireland (process number 88881.134512/2016-01). There is no participation from sponsors on authors’ decision to write or to submit this manuscript.

No potential conflict of interest was reported.

1 The questions posed in systematic reviews usually follow the ‘PICOS’ acronym: Population, Intervention, Comparison, Outcomes, Study design.

2 In 1988, Cooper proposed a taxonomy that aims to facilitate students’ and institutions’ understanding of literature reviews. Six characteristics with specific categories are briefly described: Focus: research outcomes, research methodologies, theories, or practices and applications; Goals: integration (generalization, conflict resolution, and linguistic bridge-building), criticism, or identification of central issues; Perspective: neutral representation or espousal of a position; Coverage: exhaustive, exhaustive with selective citations, representative, central or pivotal; Organization: historical, conceptual, or methodological; and Audience: specialized scholars, general scholars, practitioners or policymakers, or the general public.