Functional Analytic Psychotherapy (FAP) has been founded by Robert Kohlenberg and την Mavis Tsai at the University of Washington in 1991. Its principles are linked to B.F. Skinner’s theory about Radical Behaviorism. FAP uses Behaviorism to create a safe and warm therapeutic relationship. Therapeutic relationship plays a central role. The basic assumption is that the client’s difficulties in outside relationships are going...