Evolutionary Medicine Research Summaries

Digging Deeper

Research is hard work. Researchers may spend months, years, or even decades collecting data. Sometimes when researchers analyze that data and try to present it in a handful of published pages, it can be difficult to include every single thing they did, or to discuss all the problems they encountered in the experiment or study.

Luckily, we know that it is good to ask more questions, even of published research. Doing so gives you practice in critical thinking, a skill that is beneficial in any endeavor. After you read "Does Past Experience Affect Depression?" and maybe try your hand at the original article, "Adaptive learning can result in a failure to profit from good conditions: Implications for understanding depression," think of some potential questions about the data, hypotheses, and conclusions that the researchers presented and see if you can come up with any holes in the study. Print out or copy down the questions below and think or write out your answers. When you’re done, visit our “Digging Deeper: Depression and the Past” PDF to see what we came up with.


  1. What is the main question the paper answers?  Identify the question and any hypotheses the authors mention.  Is this related to a set of observations, a long-standing question, or a theoretical prediction?
  2. Was the study well designed to address the hypothesis (or hypotheses)?
  3. What are the data presented in the paper?  If they presented actual data, what was their sample size (e.g., people, animals, or habitats, etc.)?
  4. What did the researchers conclude and do they provide enough evidence to support their conclusion?
  5. What possible explanations for the results are considered in the article?  Do they cover all the possibilities?  Is each explanation given fair consideration?
  6. Did the researchers identify any issues with their data or methods?  Were there any issues they didn’t mention?
  7. What could the researchers have investigated more thoroughly or explained better?
  8. Why is this study important?  Was it interesting to you?  (And if so, why?)

Want us to add something to an article’s Digging Deeper page? Send us your suggestions.

Computer man image from Wikimedia Commons via The Waste Electrical and Electronic Equipment Directive.

View Citation

You may need to edit author's name to meet the style formats, which are in most cases "Last name, First name."

Bibliographic details:

  • Article: Digging Deeper: Depression and the Past
  • Author(s): Patrick McGurrin, Alex Biera
  • Publisher: Arizona State University School of Life Sciences Ask A Biologist
  • Site name: ASU - Ask A Biologist
  • Date published: November 21, 2016
  • Date accessed: September 20, 2023
  • Link: https://askabiologist.asu.edu/plosable/depression-model/digging-deeper

APA Style

Patrick McGurrin, Alex Biera. (2016, November 21). Digging Deeper: Depression and the Past. ASU - Ask A Biologist. Retrieved September 20, 2023 from https://askabiologist.asu.edu/plosable/depression-model/digging-deeper

American Psychological Association. For more info, see http://owl.english.purdue.edu/owl/resource/560/10/

Chicago Manual of Style

Patrick McGurrin, Alex Biera. "Digging Deeper: Depression and the Past". ASU - Ask A Biologist. 21 November, 2016. https://askabiologist.asu.edu/plosable/depression-model/digging-deeper

MLA 2017 Style

Patrick McGurrin, Alex Biera. "Digging Deeper: Depression and the Past". ASU - Ask A Biologist. 21 Nov 2016. ASU - Ask A Biologist, Web. 20 Sep 2023. https://askabiologist.asu.edu/plosable/depression-model/digging-deeper

Modern Language Association, 7th Ed. For more info, see http://owl.english.purdue.edu/owl/resource/747/08/

Can a computer model tell us why humans may experience depression? After reading our version of the story and the main linked article, check out the Digging Deeper PDF for our input.

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