“…The majority of theorists have conceived of depression as a function of a reduced frequency of social reinforcement (Hersen, Eisler, Alford, & Agras, 1973;Lewinsohn & Graf, 1973;Lewinsohn, Weinstein, & Alper, 1970;Lewinsohn, Weinstein, & Shaw, 1969;Liberman & Raskin, 1971;McLean, Ogston, & Grauer, 1973;Shipley & Fazio, 1973). As a consequence, therapy consists of social skills training and involves the patient's family in the therapeutic process since the family is a major source of social reinforcement.…”