Inventar zur therapeutischen Beziehung (ITB)

A successful psychotherapy requires a good therapeutic relationship. An adequate operationalization by German diagnostic instruments has to be improved. A new instrument for measuring the therapeutic relationship from the patient’s perspective is presented. It is suitable for various therapeutic orientations, integrates current empirical findings in a broad theoretical framework and corrects methodological deficits of the existing German questionnaires. The therapeutic relationship questionnaire (ITB) was developed with a sample of 44 therapists and 519 inpatient, outpatient and day clinic patients. The ITB findings confirm a very good reliability (internal consistency and retesting reliability). There is initial evidence for convergent, divergent and differential validity and for associations with therapy effects. The ITB is an economic instrument that in contrast to other questionnaires measures a general factor which could be replicated in several confirmatory and exploratory factor analyses.