title: Methylphenidate and memory: dissociated effects in hyperactive children.
abstract: Fourteen children with Attention Deficit Disorder with Hyperactivity (ADD + H) were administered the psychostimulant methylphenidate in a double-blind, placebo-controlled, crossover study. Subjects were evaluated on a well-validated measure of verbal memory and learning with an experimental design comprised of four conditions: placebo and active drug at three doses. Positive memory effects were found in the drug conditions. Significant dose-response relationships were found, indicating enhanced learning from placebo to low to medium to high dose. However, there was a differential drug effect on the memory task; methylphenidate selectively enhanced storage and retrieval mechanisms without affecting immediate acquisition.
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000188:drug therapy* / Q000523:psychology; D002648:Child; D002986:Clinical Trials as Topic; D004305:Dose-Response Relationship, Drug; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D008568:Memory / Q000187:drug effects*; D008774:Methylphenidate / Q000627:therapeutic use*; D011897:Random Allocation
chemical_list: D008774:Methylphenidate