Excerpts from tape recordings of a single, long-term, successful therapy case handled by Rogers were analyzed to evaluate the adequacy of the client-centered view that empathy, warmth, and directiveness are offered throughout therapy in a manner not contingent upon the patient''s behavior. Findings indicate that the therapists respond in a significantly differential way to 5 of the 9 patient behavior classes studied. Con-comitantly, significant increases in the emission rates of 4 of the 5 behavior classes were noted throughout therapy. Findings thus indicated significant reinforcement effects in the client-centered therapy.