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EESC 550: Research in Earth and Environmental Sciences

Literature Review to Thesis/Dissertation - Research and Writing

Critical Appraisal

Step 6. Reviewing and critically appraising your results

Critical appraisal of your found literature is an important part of the research process. This ensures that your results are meeting the needs to answer your research question.

Depending on your specific question and scope you may have varying criteria when it comes to the level of validity, the uniqueness, the types of methods used, etc., of the studies you are looking at. This may vary from what you had hoped to examine at the outset of your literature review, and it will certainly differ from other colleagues.

Regardless of varying expectations in appraisals with other colleagues, it is most important to remain consistent across all of resources you consult.


Example: P.R.O.M.P.T.

One example tool you may find useful in evaluating literature is the acronym P.R.O.M.P.T. - for more information visit The Open University's detailed guide.

PRESENTATION Review the resource for proper use of language and effectual writing.
RELEVANCE Review the resource against your inclusion and exclusion criteria - does the resource match what you set out to find? 
OBJECTIVITY Is the author's viewpoint expressed clearly and with neutral language. Are there competing objectives - i.e. has the author been sponsored or funded to come to a certain conclusion?
METHOD Has the author been clear about why a method was chosen and how they utilized it? Did the author produce results that should be seen with that type of method? 
PROVENANCE Is the author qualified to research or comment on this topic? Were they funded by a group or company with specific interests on the topic? Was the research published via an avenue that was neutral (e.g. double blind peer-review)?
TIMELINESS When was the resource published? Is it now considered to be obsolete or perhaps too old for the question you are posing?

Other Resources:

There are a variety of checklists available online for free from institutions around the world that promote critical appraisal as an important part of the research process. These may not always meet the specific guidelines you are after, but are designed to act as a template that you can make your own for your specific research question. You might find that you need to add more detailed questions, or you may need to simplify them. 

Although these are often routed in evidence-based practice within health practice, that does not make them any less valuable to critically appraising other research. 

University of Leeds Evaluation Tool for Quantitative Research Studies - key foundational points

​University of Melbourne Literature Review Guide - select the Critical Reading tab to view possible questions to consider when critically appraising.