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Hwang, Shoou-Lian; Gau, Susan Shur-Fen; Hsu, Wen-Yau; Wu, Yu-Yu – Journal of Child Psychology and Psychiatry, 2010
Background: The underlying mechanism of time perception deficit in long time intervals in attention-deficit/hyperactivity disorder (ADHD) is still unclear. This study used the time reproduction dual task to explore the role of the attentional resource in time perception deficits among children and adolescents with ADHD. Methods: Participants…
Descriptors: Intelligence, Intervals, Schizophrenia, Attention Deficit Hyperactivity Disorder
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Tamm, Leanne; Carlson, Caryn L. – Journal of Attention Disorders, 2007
Objective: To investigate single and combined effects of stimulant medication and contingencies on the performance of ADHD children with tasks involving different cognitive demands. Method: Children diagnosed with ADHD participated in a within-subjects design. At two separate sessions, children on either medication or placebo (administered in a…
Descriptors: Stimulants, Attention Deficit Disorders, Rewards, Hyperactivity
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Pedersen, Scott J.; Heath, Matthew; Surburg, Paul R. – Journal of Attention Disorders, 2007
Objective: Children with ADHD have been labeled as "uncoordinated" and "inefficient movers"; however, a paucity of research has systematically examined "stimulant-free" motor processing in this population. Method: In the present investigation, the authors employ a cross-lateral integration task to assess the…
Descriptors: Reaction Time, Attention Deficit Disorders, Males, Hyperactivity
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Hazel-Fernandez, Leslie Ann; Klorman, Rafael; Wallace, James M.; Cook, Stephen – Journal of Attention Disorders, 2006
Objective: The undertreatment of ethnic minority children with ADHD prompted a study on the effects of methylphenidate (MPH) on the executive functions of African American children with ADHD. Method: Nineteen African American children with ADHD are tested on the Tower of Hanoi (TOH) and the Paired Associates Learning Task (PAL) in a double-blind…
Descriptors: African American Children, Attention Deficit Disorders, Minority Group Children, Patients