Peer reviewed
ERIC Number: EJ696271
Record Type: Journal
Publication Date: 2004-Jun
Pages: 9
Abstractor: Author
ISBN: N/A
ISSN: ISSN-0890-8567
EISSN: N/A
Treatment Effects of Methylphenidate on Cognitive Functioning in Children with Mental Retardation and ADHD
Pearson, Deborah A.; Santos, Cynthia W.; Casat, Charles D.; Lane, David M.; Jerger, Susan W.; Roache, John D.; Loveland, Katherine A.; Lachar, David; Faria, Laura P.; Payne, Christa D.; Cleveland, Lynne A.
Journal of the American Academy of Child and Adolescent Psychiatry, v43 n6 p677 Jun 2004
Objective: Cognitive effects of stimulant medication were investigated in children with mental retardation (MR) and attention-deficit/hyperactivity disorder (ADHD). Method: Performance on tasks tapping sustained attention, visual and auditory selective attention, inhibition, and immediate memory was assessed for 24 children (mean age 10.9 years) during a placebo-controlled, double-blind, crossover treatment trial with 0.15, 0.30, and 0.60 mg/kg b.i.d. dosages of methylphenidate (MPH). Results: Successively higher MPH doses were associated with consistent gains in cognitive task performance, with optimal performance noted at the highest dose. Analysis of dose-response curves revealed significant linear components of trend on measures tapping sustained attention, visual selective attention, auditory selective attention, as well as two tasks tapping inhibition/impulsivity: delay of gratification and match-to-sample. No evidence of a curvilinear dose-response relationship emerged for any measure. Conclusions: Inattention and disinhibition/impulsivity decline with MPH treatment in children with ADHD/MR, and consistent with the Multimodal Treatment Study of ADHD, higher MPH doses are most effective. These findings also suggest that cognitive testing, together with behavioral and medical assessment, can be an effective tool in assessing stimulant response in children with ADHD/MR.
Descriptors: Stimulants, Mental Retardation, Inhibition, Hyperactivity, Attention Span, Attention Deficit Disorders, Drug Therapy, Visual Stimuli, Auditory Stimuli, Memory, Children, Cognitive Ability
Lippincott Williams & Wilkins, P.O. Box 1620, Hagerstown, MD 21741. Tel: 800-638-3030 (Toll Free); Fax: 301-223-2400.
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A