title: Reliability and validity of three measures of functioning with "hard-core" chronic mental patients.
mesh_terms: D000293:Adolescent; D000328:Adult; D001290:Attitude; D002908:Chronic Disease; D005260:Female; D006760:Hospitalization; D006778:Hospitals, Psychiatric; D006801:Humans; D007406:Interview, Psychological; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D011618:Psychotic Disorders / Q000175:diagnosis*; D012919:Social Behavior