Page | 1 Beth Israel Fidelity Scale (BIFS) Patton, J., Muran, J.C., Safran, J.D., Wachtel, P.L., & Winston, A. (1998) Brief Psychotherapy Research Program Beth Israel Medical Center First Avenue & 16 th Street New York, NY 10003 ___________ The scale was developed with support from the National Institute of Mental Health (MH50246). It is a 44-item observer-based measure of therapist adherence to three time- limited psychotherapies in the Beth Israel Brief Psychotherapy Research Program: a integrative relational, a short-term dynamic, and a cognitive-behavioral model. It also includes a subscale that assesses nonspecific therapist behaviors. In a study to demonstrate its psychometric properties of the BIFS, a cohort of graduate students was trained to assess adherence in 72 15-minute audiotaped segments excerpted from 24 treatment cases from three treatment modalities, eight from each modality. Results indicated satisfactory to strong interrater reliability and discriminant validity.