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PMID: 10885681 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

Confirmation of an inhibitory control deficit in attention-deficit/hyperactivity disorder.

Journal of abnormal child psychology ·Vol. 28 ·No. 3 ·2000-06-00 ·Pages 227-35

Schachar R, Mota VL, Logan GD, Tannock R, Klim P

Abstract

The objective of this study was to determine whether deficient inhibitory control distinguishes children with a diagnosis of attention-deficit/hyperactivity (ADHD) disorder, conduct disorder (CD), and comorbid ADHD + CD from normally developing children. Participants were rigorously diagnosed children (age 7 to 12 years) with ADHD (N = 72), CD (N = 13) or ADHD + CD (N = 47) and 33 control children (NC). We studied inhibitory control using the stop-signal paradigm, a laboratory task that assessed the ability to inhibit an ongoing action. The ADHD group had significantly impaired inhibitory control compared to NC, CD, and ADHD + CD children. These results indicate that children with ADHD have deficient inhibition as measured in the stop-signal paradigm and that ADHD occurring in the presence of ADHD + CD may represent a phenocopy of CD rather than a variant of ADHD.

MeSH Terms
Attention Deficit Disorder with Hyperactivity/psychology Case-Control Studies Child Comorbidity Conduct Disorder/psychology Female Humans Inhibition, Psychological Male Task Performance and Analysis
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Schachar R
Department of Psychiatry and the Brain and Behavior Program, The Hospital for Sick Children and the University of Toronto, Ontario, Canada. [email protected]
Mota V L
Logan G D
Tannock R
Klim P
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Article Info
Journal
Journal of abnormal child psychology
Abbr.
J Abnorm Child Psychol
ISSN
0091-0627
DOI
10.1023/a:1005140103162
Email
[email protected]
Published
2000-06-00
Pages
227-35
Language
English
Region
United States
NLM ID
0364547
Subset
IM
Grants
NICHD NIH HHS · 1RO1HD31714-0142 · United States
External Links
PubMed source DOI: 10.1023/a:1005140103162
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