Behavior Analysis: Research and Practice (Mar 1, 2018): No Pagination Specified- The proposed mechanism of action in Functional Analytic Psychotherapy (FAP) is therapist-contingent responses to client in-session behavior that parallels out-of-session problematic behavior. In theory, these responses shape adaptive behaviors that generalize into the client’s daily life (Tsai et al., 2009). Therefore, the therapist’s response repertoire must be ripe with interpersonally effective responses to model and shape client behavior. Thus, trainings in FAP were designed not only to equip therapists with a skillset in implementing the fundamentals of shaping but also to serve several other functions, including facilitating the development of an effective interpersonal repertoire to promote shaping.. To read the full article, log in using your NHS OpenAthens details.