Anatomy of Literature Review: Steps, Tools, and Structure

1. Literature Review & Search Dr Urooj Saleem Asst.Prof Medical Education

2. Definition • It is a write up of the systematic survey of scholarly articles, books, and other sources (e.g. reports, dissertations, conference proceedings) that are relevant to a particular research topic.

3. Anatomy of LR • systematic survey of scholarly literature for • To report what has already been researched about the topic • To indicate the gaps in the existing understanding of the topic • To prepare the rationale for the ground

4. There are five steps involved in conducting a literature review: • search for existing literature in your area of study; • review the literature selected; • develop a theoretical framework; • develop a conceptual framework; • writing up the literature reviewed

5. Steps for reading the literature • Step 1: Read the abstract To decide whether to read the article in details or not • Step 2: Read introduction • It explains why the study is important • It provides review and evaluation of relevant literature • Step 3: Read the methods closely with a critical eye • Focus on participants, measures and procedures, and analysis

6. Step 4: Evaluate results • Check whether the conclusions seemed logical • Check any bias on the part of the researcher • Step 5: Be critical and try to read ‘the big picture’ • Skim through the entire document and identify the key variable and hypotheses discussed, and any suggestions/directions/ideas given for further research

7. Literature Search How to Do it

8. Search engines • These are very useful and there are several to choose from. They have different capabilities and personal preference will determine which you are most comfortable with: • PubMed • Cochrane • Google Scholar

9. Search Tools • Boolean logic • Use OR, NOT, AND

10. Narrowing down the search: Number of PubMed “hits” based on key words • hiv aids: 113,139 • hiv aids and alcohol: 2,598 • hiv aids and alcohol and Africa: 350 • hiv aids and alcohol and Africa and Kenya: 30

11. Can sort by date, author and journal • Scroll to an article that looks relevant and click to get the abstract. • There are Related Links to the right of the abstract. These are often relevant. • Clicking an author’s name pulls up all the articles by that author. • Iterative listing/searches by topic, Related Links and authors give a good overview of what is out there.

16. Write Up • After reviewing the literature, summarize what has been done, what has not been done, and what needs to be done • Remember you are arguing your point of why your study is important!

17. Structure of review articles • Literature reviews are in reality a type of research • Should conform to the anatomy of a typical scholarly article • Abstract • Introduction • Methods • Results • Discussion • Conclusion • References

18. Structure of literature review Introduction Gives a quick idea of the topic of the literature review, such as the central theme or organizational pattern. Body Contains your discussion of sources. Conclusions/Recommendations Discuss what you have drawn from reviewing literature so far. Where might the discussion proceed?

19. Organization of literature review • A general organization looks like a funnel • Broader topics • Subtopics • Studies like yours

20. Organizing Your Literature Review • Topical Order—organize by main topics or issues; emphasize the relationship of the issues to the main “problem” • Chronological Order—organize the literature by the dates the research was published • Problem-Cause-Solution Order—Organize the review so that it moves from the problem to the solution

21. Organizing Your Literature Review • General-to-Specific Order—(Also called the funnel approach) Examine broad-based research first and then focus on specific studies that relate to the topic • Specific-to-General Order—Try to make discuss specific research studies so conclusions can be drawn

22. Making links between studies Agreements • Similarly, author B points to… • Likewise, author C makes the case that… • Author D also makes this point… • Again, it is possible to see how author E agrees with author D… Disagreements • However, author B points to… • On the other hand, author C makes the case that… • Conversely, Author D argues… • Nevertheless, what author E suggests…

23. Summary table • It is useful to prepare. • Such a table provides a quick overview that allows the reviewer to make sense of a large mass of information. • The tables could include columns with headings such as • Author • type of study • Sample • Design • data collection approach • key findings

25. Active or passive voice • You should use, where appropriate, both active and passive voice • As a general rule, use active voice unless there is good reason not to

26. Argue Assert Assume Challenge Claim Contend Contradict Describe Dispute Emphasize Establish Examine Find Maintain Note Object Observe Persuade Propose Prove Purport Recommend Refute Reject Remark Suggest Support Reporting verbs

27. Verb tenses – Present • A statement about what the thesis, chapter or section does Examples: • This thesis presents a report of an investigation into ……. • This chapter thus provides a basis for the next. • In this section, the results from the first set of experiments are reported. • A statement of a generally accepted scientific fact Examples: • There are three factors that control the concentration of aluminum in seawater. • The finite rate coefficients have an effect on heat transfer through a horizontal porous layer.

28. Verb tenses – Present • A review of current research work, or research work of immediate relevance to your study. Example: • Schulze (2002) concludes that hydraulic rate has a significant effect on future performance. • Comments, explanations and evaluative statements made by you when you are reviewing previous studies. Examples: • Therefore, this sequential approach is impractical in the real world where projects are typically large and the activities from one stage may be carried out in parallel with the activities of another stage. • The reason for this anomalous result is that the tests were done at low hydraulic rates at which the plastic packing was not completely wetted.

29. Verb tenses – Past • Report the contents, findings or conclusions of past research Examples: • Haberfield (1998) showed that the velocity of many enzyme reactions was slowed down if the end product had an increased paramagnetism. • Allington (1999) found that the temperatures varied significantly over time.

30. Verb tenses – Present perfect • In citations where the focus is on the research area of several authors Examples: • Several studies have provided support for the suggestion that the amount of phonological recoding that is carried out depends on orthographic depth (Frost, 1994; Smart et al, 1997; Katz & Feldman, 2001, 2002). • Joint roughness has been characterized by a number of authors (Renger, 1990; Feker & Rengers, 1997; Wu & Ali, 2000). • To generalize about the extent of the previous research Examples: • Many studies have been conducted in this field. • Few researchers have examined this technique. • There has been extensive research into.........

31. The Writing Process • Rough Draft • Final Draft • Edit • Edit Again

32. Show others Have someone else look at your literature review for • Clarity • Can they understand what you’re trying say? • Flow • Does the organization make sense? • Completeness • Are there areas left out? • Questions left unanswered? • Statements without citations?

33. General Guidelines to Writing a Literature Review • Don’t attempt to cover everything written on your topic • You will need to pick out the research most relevant to the topic you are studying • You will use the studies in your literature review as “evidence” that your research question is an important one

34. General Guidelines to Writing a Literature Review • Introduce the literature review by pointing out the major research topic that will be discussed • Identify the broad problem • Discuss the general importance of your topic for those in your field

35. General Guidelines to Writing a Literature Review • It is important to cover research relevant to all the variables being studied. • Research that explains the relationship between these variables is a top priority. • You will need to plan how you will structure your literature review and write from this plan.

36. While reading the literature for theoretical background of your study, you will realize that certain themes have emerged. • List the main ones, converting them into subheadings. These subheadings should be precise, descriptive of the theme in question, and follow a logical progression.

37. A Good Literature Review is: • Focused - The topic should be narrow. You should only present ideas and only report on studies that are closely related to topic. • Concise - Ideas should be presented economically. Don’t take any more space than you need to present your ideas. • Logical - The flow within and among paragraphs should be a smooth, logical progression from one idea to the next • Developed - Don’t leave the story half told. • Integrative - Your paper should stress how the ideas in the studies are related. Focus on the big picture. What commonality do all the studies share? How are some studies different than others? Your paper should stress how all the studies reviewed contribute to your topic. • Current - Your review should focus on work being done on the cutting edge of your topic.

38. Common Errors Made in Lit Reviews • Review isn’t logically organized • Review isn’t focused on most important facets of the study • Review doesn’t relate literature to the study • Too few references or outdated references cited • Review isn’t written in author’s own words • Review reads like a series of disjointed summaries • Review doesn’t argue a point • Recent references are omitted

39. Plagiarism includes (Galvan, pg. 89): • Using another writer’s words without proper citation • Using another writer’s ideas without proper citation • Citing a source but reproducing the exact word without quotation marks • Borrowing the structure of another author’s phrases/sentences without giving the source • Borrowing all or part of another student’s paper • Using paper-writing service or having a friend write the paper