title: Use of concrete reinforcement to control content of verbal initiations in group therapy with adolescents.
mesh_terms: D000293:Adolescent; D002674:Child, Institutionalized; D005260:Female; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000628:therapy; D011615:Psychotherapy, Group; D012055:Reinforcement Schedule; D012054:Reinforcement, Psychology; D014040:Token Economy; D014705:Verbal Behavior