Change After Psychotherapy (CHAP), formulated by Rolf Sandell in 1987, is a method to measure change after the termination of a psychotherapy, without comparing pre- and post-treatment variables. The CHAP five scales are described (Symptoms, Adaptive Capacity, Self-insight, Basic Conflicts, and Extra-Therapeutic Factors), with data on reliability and norms. One of the interesting aspects of CHAP is that it allows to identify variables not present at the beginning of treatment, i.e., that could not be included in prepost measures since they might appear due to therapy itself. This manual, which was never published before, is an update of a 1997 manuscript.
Keywords: Psychotherapy research, psychotherapy outcome, post-treatment evaluation, quantitative research, qualitative research