 The article discusses the importance of content validity in developing psychometric instruments and provides an overview of the process used to examine the content validity of a patient-centered communication instrument through a two-step process involving domain determination, sampling, instrument formation, and content validity ratio, index, and modified CAPA statistic. The results indicate that the instrument identified seven dimensions and enjoyed an appropriate level of content validity, with an overall content validity index using the universal agreement approach of 0.93. This article was authored by Vahid Zamanzata, Akram Gharamanian, Mariam Rasuli, and others.