Title

Hyperactivity In Boys With Attention Deficit/Hyperactivity Disorder (Adhd): The Association Between Deficient Behavioral Inhibition, Attentional Processes, And Objectively Measured Activity

Keywords

ADHD; Attention; Behavioral inhibition; Hyperactivity; Stop-signal

Abstract

Contemporary models of ADHD hypothesize that hyperactivity reflects a byproduct of inhibition deficits. The current study investigated the relationship between children's motor activity and behavioral inhibition by experimentally manipulating demands placed on the limited-resource inhibition system. Twenty-two boys (ADHD = 11, TD = 11) between the ages of 8 and 12 years completed a conventional stop-signal task, two choice-task variants (no-tone, ignore-tone), and control tasks while their motor activity was measured objectively by actigraphs placed on their nondominant wrist and ankles. All children exhibited significantly higher activity rates under all three experimental tasks relative to control conditions, and children with ADHD moved significantly more than typically developing children across conditions. No differences in activity level were observed between the inhibition and noninhibition experimental tasks for either group, indicating that activity level was primarily associated with basic attentional rather than behavioral inhibition processes. © 2012 Psychology Press.

Publication Date

9-1-2012

Publication Title

Child Neuropsychology

Volume

18

Issue

5

Number of Pages

487-505

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1080/09297049.2011.631905

Socpus ID

84865031172 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84865031172

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