title: Establishment of social reinforcement as an effective modifier of verbal behavior in chronic psychiatric patients.
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D002908:Chronic Disease; D003216:Conditioning, Operant; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000628:therapy; D008875:Middle Aged; D012056:Reinforcement, Social; D014705:Verbal Behavior