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Spencer, Sarah V.; Hawk, Larry W., Jr.; Richards, Jerry B.; Shiels, Keri; Pelham, William E., Jr.; Waxmonsky, James G. – Journal of Abnormal Child Psychology, 2009
Recent research has suggested that intra-individual variability in reaction time (RT) distributions of children with ADHD is characterized by a particularly large rightward skew that may reflect lapses in attention. The purpose of the study was to provide the first randomized, placebo-controlled test of the effects of the stimulant methylphenidate…
Descriptors: Stimulants, Reaction Time, Attention Deficit Disorders, Hyperactivity
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Waschbusch, Daniel A.; Craig, Rebecca; Pelham, William E., Jr.; King, Sara – Journal of Abnormal Child Psychology, 2007
The authors examined self-handicapping prior to academic-oriented tasks in children with and without ADHD and examined whether stimulant medication influenced self-handicapping. Participants were 61 children ages 6 to 13, including 22 children with ADHD tested after taking a placebo, 21 children with ADHD tested after taking stimulant medication,…
Descriptors: Academic Failure, Stimulants, Hyperactivity, Attention Deficit Disorders
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Kopecky, Helena; Chang, H. Theresa; Klorman, Rafael; Thatcher, Joan E.; Borgstedt, Agneta D. – Journal of Abnormal Child Psychology, 2005
We administered the Tower of Hanoi to demographically comparable samples of control participants (n = 34) and children with the Combined (n = 22) and Inattentive subtypes (n = 19) of Attention-Deficit/Hyperactivity Disorder (ADHD). Controls excelled over children with the Inattentive subtype, who outperformed patients with the Combined subtype.…
Descriptors: Control Groups, Hyperactivity, Attention Deficit Disorders, Stimulants
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Malone, Molly A.; And Others – Journal of Abnormal Child Psychology, 1988
Effects of stimulant medication on word processing were assessed in 31 attention-deficit-disordered children (ages 6-16). Results suggested that methylphenidate may selectively improve the phonological level of word processing, and that favorable effects are produced through inhibition of excessive right hemisphere activity in response to task…
Descriptors: Attention Deficit Disorders, Attention Span, Brain Hemisphere Functions, Cognitive Processes
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Abikoff, Howard; And Others – Journal of Abnormal Child Psychology, 1988
Thirty-four stimulant-treated, academically deficient, and attention deficit disordered, hyperactive (ADDH) boys (ages 7-12) participated in a 16-week, intensive cognitive training program focusing on academic skills and tasks. Intervention did not enhance self-esteem and there was poor agreement between teacher ratings of academic competence and…
Descriptors: Academic Achievement, Achievement Gains, Attention Deficit Disorders, Attention Span