title: Perseveration induced by methylphenidate in children: preliminary findings.
mesh_terms: D001288:Attention / Q000187:drug effects*; D002648:Child; D002675:Child, Preschool; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006948:Hyperkinesis / Q000188:drug therapy; D008297:Male; D008606:Mental Processes / Q000187:drug effects*; D008774:Methylphenidate / Q000009:adverse effects* / Q000627:therapeutic use
chemical_list: D008774:Methylphenidate