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.

Inclusion Criteria:

• Age > 16 years
• Native Norwegian speaker

Exclusion Criteria:

• Does not speak Norwegian fluently

General population of Norway

The sharing of IPD for this study will require guaranteed anonymity for all involved participants. Unless such anonymity can be guaranteed, IPD will not be shared outside the research team. Current advances in machine learning and AI introduce difficult questions regarding the possibility of re-identification of research participants from patterns in the data. Decisions of IPD publication therefore require additional consideration.