Expert review of a research instrument, often referred to as a "field test," helps establish the credibility of the instrument. If you have created your own instrument, you should conduct an expert review.

Expert reviewers should be faculty members, researchers and practitioners. For the best feedback on your instrument, these experts need to have a strong background with your population, not just expertise in the field. For example, if your research is on the lived experience of Nigerian immigrants in the United States, your expert reviewers need to have expertise within the Nigerian immigrant community.

Expert reviewers should not meet your inclusion/exclusion criteria (qualify as participants) of your study. As the field test does not involve collecting data from participants field tests can and should be conducted prior to submitting to the IRB.