ADHD and Behavioral Inhibition: A Re-Examination of the Stop-Signal Task

Autor/inn/en	Alderson, R. Matt; Rapport, Mark D.; Sarver, Dustin E.; Kofler, Michael J.
Titel	ADHD and Behavioral Inhibition: A Re-Examination of the Stop-Signal Task
Quelle	In: Journal of Abnormal Child Psychology, 36 (2008) 7, S.989-998 (10 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0091-0627
DOI	10.1007/s10802-008-9230-z
Schlagwörter	Auditory Stimuli; Reaction Time; Construct Validity; Inhibition; Attention Deficit Hyperactivity Disorder; Behavior Problems; Computation; Comparative Analysis + Suchen Sie Ihr Suchwort? Auditive Stimulation; Reaktionsvermögen; Hemmung
Abstract	The current study investigates two recently identified threats to the construct validity of behavioral inhibition as a core deficit of attention-deficit/hyperactivity disorder (ADHD) based on the stop-signal task: calculation of mean reaction time from go-trials presented adjacent to intermittent stop-trials, and non-reporting of the stop-signal delay metric. Children with ADHD (n = 12) and typically developing (TD) children (n = 11) were administered the standard stop-signal task and three variant stop-signal conditions. These included a no-tone condition administered without the presentation of an auditory tone; an ignore-tone condition that presented a neutral (i.e., not associated with stopping) auditory tone; and a second ignore-tone condition that presented a neutral auditory tone after the tone had been previously paired with stopping. Children with ADHD exhibited significantly slower and more variable reaction times to go-stimuli, and slower stop-signal reaction times relative to TD controls. Stop-signal delay was not significantly different between groups, and both groups' go-trial reaction times slowed following meaningful tones. Collectively, these findings corroborate recent meta-analyses and indicate that previous findings of stop-signal performance deficits in ADHD reflect slower and more variable responding to visually presented stimuli and concurrent processing of a second stimulus, rather than deficits of motor behavioral inhibition. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10