Treatment outcome of a group cognitive therapy program for depression.

A 12-session group program of cognitive therapy, designed by the first author, was evaluated with 35 persons suffering from major or minor depressive disorders. Effect-size scores were generated using the method of Nietzel, Russel, Hemmings, and Gretter (1987) and compared with cut-off points calculated using the method of Jacobson and Revenstorf (1988) and the norms established by Nietzel et al. (1987) in their meta-analysis. The effects of the Group Cognitive Therapy Program were found to be clinically significant according to the criteria of Jacobson and colleagues (Jacobson and Revenstorf, 1988; Jacobson, Follette and Revenstorf, 1984) for 73% of patients. It is concluded that the Group Cognitive Therapy Program is a clinically efficacious and cost-effective treatment for persons suffering from nonpsychotic, primary, unipolar depression.