title: Anticipatory heart rate deceleration and reaction time in children with and without referral for learning disability.
mesh_terms: D001288:Attention / Q000187:drug effects; D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy; D002648:Child; D002657:Child Development; D002986:Clinical Trials as Topic; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D007859:Learning Disabilities / Q000188:drug therapy; D008297:Male; D008774:Methylphenidate / Q000494:pharmacology; D009043:Motor Activity / Q000187:drug effects; D010919:Placebos; D011930:Reaction Time / Q000187:drug effects; D012718:Set, Psychology
chemical_list: D010919:Placebos; D008774:Methylphenidate