The introduction of a token economy in a psychiatric ward with extremely withdrawn chronic schizophrenics.
D000328:Adult; D000368:Aged; D001521:Behavior Therapy; D002908:Chronic Disease; D005260:Female; D006778:Hospitals, Psychiatric; D006801:Humans; D008297:Male; D008875:Middle Aged; D012201:Reward; D012559:Schizophrenia / Q000628:therapy*; D012565:Schizophrenic Psychology