A Translation Study of the Things You Do Questionnaire 15-Item Version

Psychotherapy aims to modify dysfunctional patterns of thinking, feeling, and behaving to improve mental health. A five-factor model of adaptive behaviors, operationalized in the Things You Do Questionnaire (TYDQ), has been identified as a mediator of treatment response in depression and anxiety interventions. The short-form TYDQ-15 is a key component of a transdiagnostic treatment promoting adaptive behavior. To implement this intervention in Norway, the TYDQ-15 requires translation and cultural adaptation, following established guidelines for clinical assessment instruments. Currently unavailable in Norwegian, its translation and psychometric evaluation are necessary for clinical application. This study aims to (1) produce a culturally adapted Norwegian version of the TYDQ-15 and (2) assess its psychometric properties, including reliability, factor structure, and criterion validity, within a Norwegian population. The findings will facilitate the integration of the Things You Do Intervention into Norwegian mental health services.