Introduction Functional Analytic Psychotherapy (FAP) is an experiential interpersonal treatment belonging to the third wave in behavior therapy. It is compatible with state-of-the-art cognitive behavioral approaches. It is different, however, in that cognition is understood in terms of verbal behavior. In addition, the influence of beliefs on other behavior is analyzed in terms of rule -following and as depending on the effect of real-life contingencies (Kohlenberg & Tsai, 1994). The translation of cognitive therapy strategies into a behavioral framework is not typical of FAP. It has, been a theme in a broader section of the third wave movement from its beginnings (e.g. Zettle & Hayes, 1982).