Reviewing research proposals and manuscripts written by other researchers is an important aspect of a researcher’s work. A reviewer’s opinion on submitted articles and grant applications can have serious consequences for the authors. It is important, therefore, that these appraisals demonstrate expertise, respect and lack of bias.

The principal investigator (PI) can teach young researchers how to review publications
or projects, by including them in the review process. Moreover, various online training tools are available. For example, the Committee of Publication Ethics (COPE) provides useful information regarding the review process, including guidelines, podcasts and e-learnings; the comprehensive BMJ reviewer training package is helpful; and the EQUATOR (Enhancing the QUAlity and Transparency Of health Research) network lists a range of peer review training resources. Several aspects need to be considered to ensure that appraisals demonstrate expertise, respect and lack of bias: factual quality, respect and integrity.