Hypothesis tested was: " . . . treating voluntary patients by a combination of group and individual psychotherapy is more effective than treating them by one method alone." Results indicated that "while all three methods produce beneficial results, the combined method is superior to one method." In order of effectiveness, from most to least, the methods follow this order: group-plus-individual psychotherapy, individual therapy, group therapy. (PsycINFO Database Record (c) 2006 APA, all rights reserved)