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Direct linkFriedman-Hill, Stacia R.; Wagman, Meryl R.; Gex, Saskia E.; Pine, Daniel S.; Leibenluft, Ellen; Ungerleider, Leslie G. – Cognition, 2010
In this study, we attempted to clarify whether distractibility in ADHD might arise from increased sensory-driven interference or from inefficient top-down control. We employed an attentional filtering paradigm in which discrimination difficulty and distractor salience (amount of image "graying") were parametrically manipulated. Increased…
Descriptors: Attention Deficit Hyperactivity Disorder, Cognitive Processes, Children, Error Patterns
Johnson, Katherine A.; Barry, Edwina; Bellgrove, Mark A.; Cox, Marie; Kelly, Simon P.; Daibhis, Aoife; Daly, Michael; Keavey, Michelle; Watchorn, Amy; Fitzgerald, Michael; McNicholas, Fiona; Kirley, Aiveen; Robertson, Ian H.; Gill, Michael – Neuropsychologia, 2008
Increased variability in reaction time (RT) has been proposed as a cardinal feature of attention deficit hyperactivity disorder (ADHD). Increased variability during sustained attention tasks may reflect inefficient fronto-striatal and fronto-parietal circuitry; activity within these circuits is modulated by the catecholamines. A disruption to…
Descriptors: Comparative Analysis, Stimulants, Drug Therapy, Reaction Time
Tucha, Lara; Tucha, Oliver; Walitza, Susanne; Sontag, Thomas A.; Laufkotter, Rainer; Linder, Martin; Lange, Klaus W. – Journal of Attention Disorders, 2009
Objective: The present article tests the hypothesis of a sustained attention deficit in children and adults suffering from ADHD. Method: Vigilance and sustained attention of 52 children with ADHD and 38 adults with ADHD were assessed using a computerized vigilance task. Furthermore, the attentional performance of healthy children (N = 52) and…
Descriptors: Hypothesis Testing, Attention Deficit Hyperactivity Disorder, Attention Span, Adults
