Individually-tailored psychological assistance considers client preferences and has been linked to various positive effects of psychotherapy. However, a method for evaluating client preferences has not yet been developed in Japan. This study aimed to create a Japanese version of the Cooper-Norcross Inventory of Preferences (C-NIP) to effectively assess clients' preferences for psychotherapy. We also explored the method's factor structure, reliability, and validity. In total, 240 undergraduate and graduate students (Study 1) and 663 adults (Study 2) participated in two online questionnaire surveys. Confirmatory factor analysis and correlation analysis confirmed the Japanese version of the C-NIP displayed a four-factor structure, acceptable internal consistency, test-retest reliability, and some convergent validity. We discuss the scale's psychometric properties and offer insights for further research in clinical practice.
Suzuki et al. (Thu,) studied this question.