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| Research article summary (published 30 Dec 2001): |
Neuropsychological executive functions and DSM-IV ADHD subtypes.
Full Abstract
OBJECTIVE:
To evaluate and compare a focused set of component neuropsychological executive functions in the DSM-IV attention-deficit/hyperactivity disorder combined (ADHD-C) and inattentive (ADHD-I) subtypes.
METHOD:
The Stop task, Tower of London, Stroop task, Trailmaking Test, and output speed measures were completed by 105 boys and girls aged 7-12 classified as either DSM-IV ADHD-C (n = 46), ADHD-I (n = 18), or community control (n = 41).
RESULTS:
Both subtypes had deficits on output speed. A group x gender interaction was observed on the Stop task:
boys with ADHD-C were impaired versus boys with ADHD-I, whereas girls in the two subtypes did not differ. The ADHD-C type had a deficit in planning. Neither ADHD group had a deficit in interference control per se, although they were slower than controls on the Stroop tasks.
CONCLUSIONS:
ADHD-I shares neuropsychological deficits with ADHD-C in the domain of output speed; on most domains the subtypes did not differ. Neuropsychological distinctions between these ADHD subtypes may be few, depending on which domain of executive functioning is assessed, and these distinctions differ by gender. In the case of boys, the two subtypes may be distinguished by the specificity of motor inhibition deficits to ADHD-C.
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Author information
Author/s: Nigg, Joel T (JT); Blaskey, Lisa G (LG); Huang-Pollock, Cynthia L (CL); Rappley, Marsha D (MD);
Affiliation: Department of Psychology, Michigan State University, East Lansing 48824-1117, USA.
Grants: R03-MH57244 (Agency:United States NIMH)
Journal and publication information
Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S.
Journal: Journal of the American Academy of Child and Adolescent Psychiatry (J Am Acad Child Adolesc Psychiatry), published in United States. (Language: eng)
Reference: 2002-Jan; vol 41 (issue 1) : pp 59-66
Dates: Created 2002/01/21; Completed 2002/02/26; Revised 2007/11/14;
PMID: 11800208, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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