title: The effect of drugs on stereotyped and nonstereotyped operant behaviors in retardates.
mesh_terms: D000293:Adolescent; D000328:Adult; D001519:Behavior / Q000187:drug effects*; D003216:Conditioning, Operant / Q000187:drug effects; D006760:Hospitalization; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology*; D008297:Male; D008774:Methylphenidate / Q000494:pharmacology*; D013881:Thioridazine / Q000494:pharmacology*
chemical_list: D008774:Methylphenidate; D013881:Thioridazine