Objective: The aim of this scoping review was to investigate the published literature on written assessment of communication skills in health professionals' education.

Methods: Pubmed, Embase, Cinahl and Psychnfo were screened for the period 1/1995-7/2020. Selection was conducted by four pairs of reviewers. Four reviewers extracted and analyzed the data regarding study, instrument, item, and psychometric characteristics.

Results: From 20,456 assessed abstracts, 74 articles were included which described 70 different instruments. Two thirds of the studies used written assessment to measure training effects, the others focused on the development/validation of the instrument. Instruments were usually developed by the authors, often with little mention of the test development criteria. The type of knowledge assessed was rarely specified. Most instruments included clinical vignettes. Instrument properties and psychometric characteristics were seldom reported.

Conclusion: There are a number of written assessments available in the literature. However, the reporting of the development and psychometric properties of these instruments is often incomplete. Practice implications written assessment of communication skills is widely used in health professions education. Improvement in the reporting of instrument development, items and psychometrics may help communication skills teachers better identify when, how and for whom written assessment of communication should be used.