KAAP 400 - Lecture 5

Why is critical analysis of scientific literature important when writing a literature review?

A literature review evaluates the quality of scientific evidence, shows what is already known, prevents duplication, identifies methodological weaknesses and knowledge gaps, and motivates and justifies your study. It is not simply a summary or “who said what

What is Step 1 when conducting a literature review?

Start broad by beginning with a general area of interest rather than a narrow question. Examples include injury recovery in athletes, sex differences in rehabilitation, return-to-sport outcomes, ACL recovery, and psychological

What is Step 2 when conducting a literature review?

Narrow the topic by defining the population, injury, outcome, timeframe, and setting. For example, instead of “ACL recovery,” focus on “recovery outcomes in female collegiate athletes after ACL reconstruction.

What is Step 3 when conducting a literature review?

Define a research topic that includes the population of interest, injury or condition, relevant context, and outcome. Example: Neuromuscular recovery and return-to-sport timelines in female collegiate athletes following ACL

What are the additional steps for conducting a literature review?

Explore what is already known → Read relevant literature → Analyze and synthesize the evidence → Write and communicate your findings → Repeat to refine and build on your work

What is the difference between synthesizing and summarizing the literature?

Option 1: “Smith (2020) found that cardiovascular exercise improves cognition. Jones (2021) found similar results.”

Option 2: “Across multiple studies, structured cardiovascular exercise improves executive function in older adults; however, few studies examine high-intensity versus moderate-intensity programs, limiting intensity-specific conclusions.” 

Summarizing re-reports individual study findings like a book report. Synthesizing compares and interprets patterns across studies, identifies gaps, and explains what the overall evidence shows

• This is a summary: (INCORRECT)

  • “Smith (2020) found that cardiovascular exercise improves cognition. Jones (2021) found similar results.”

• This is a synthesis: (CORRECT!)

  • “Across multiple studies, structured cardiovascular exercise improves executive function in older adults; however, few studies examine high-intensity versus moderate-intensity programs, limiting intensity-specific conclusions.” 

What are the main sections of a research article, and what does each section tell you?

Abstract → summary of the study; Introduction → why the study was done; Methods → how the study was conducted; Results → what was found; Discussion → what the findings mean

What is the purpose of the abstract in a research article, and what should you look for?

The abstract summarizes the whole study. Look for the research question/objective, key methods and sample size, main results, and significance of the findings. Do not use the abstract alone for annotations—rely on the actual study.

What makes a strong research article abstract?

A strong abstract is specific, clear, and includes data. Abstracts with vague language may sound scientific but provide less detail and weaken credibility.

What is the purpose of the Introduction in a research article, and what should you look for?

The Introduction explains why the study was done by providing background, summarizing the literature, identifying a clear research gap, and stating the study objective or hypothesis. Red flags include unsupported statements, emotional language, and no clear rationale.

What is the purpose of the Methods section in a research article, and what should you look for?

The Methods section explains how the study was conducted so it can be replicated. Look for the study design, sample size and criteria, interventions/exposures, outcomes, randomization, and blinding. Red flags include a small or biased sample, no control group, poorly described procedures, or only subjective measures

What is the purpose of the Results section in a research article, and what should you look for?

The Results section presents what the data showed using facts, not opinions or interpretation. Look for appropriate statistics, whether dropouts/missing data are addressed, and whether tables and figures are clear and consistent. Red flags include selective reporting, incomplete statistics/p-values, or unclear/inconsistent figures.

What is the purpose of the Discussion section in a research article, and what should you look for?

The Discussion interprets the results and connects them to what is already known and the bigger picture. Look for comparisons with previous studies, implications, limitations, and suggestions for future research. Red flags include overstating causation, ignoring limitations, or generalizing beyond the study population

What is the Hourglass Method for writing a research article?

The Hourglass Method starts with a broad context, narrows to specific and focused details in the middle, and then expands back to broader implications in the conclusion.

How do you evaluate whether a research article is trustworthy?

Evaluate both the author and the journal. For the author, consider their previous publications and possible conflicts of interest. For the journal, check whether it is reputable, indexed (e.g., PubMed), non-predatory, and has a credible editorial board

How do you spot Bad (or Questionable) Science

What are important tips for actively reading and evaluating scientific literature?

Actively read by highlighting, taking notes, asking questions, and summarizing in your own words. Don’t be intimidated by scientific jargon—look up unfamiliar terms and create a personal dictionary. Take notes on the citation, research question, methods, sample, outcomes, conclusions, strengths, and limitations, while tracking patterns, contradictions, and gaps. Use tools like Zotero, spreadsheets, or note apps to stay organized.