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Interference Control in Children with Attention Deficit/Hyperactivity Disorder
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van Mourik, Rosa; Papanikolau, Alky; van Gellicum-Bijlhout, Joyce; van Oostenbruggen, Janneke; Veugelers, Diane; Post-Uiterweer, Annebeth; Sergeant, Joseph A.; Oosterlaan, Jaap – Journal of Abnormal Child Psychology, 2009
The view that Attention Deficit/Hyperactivity Disorder (ADHD) is associated with a diminished ability to control interference is controversial and based exclusively on results of (verbal)-visual interference tasks, primarily the Stroop Color Word task. The present study compares medication-naive children with ADHD (n = 35 and n = 51 in Experiments…
Descriptors: Attention Deficit Hyperactivity Disorder, Color, Comparative Analysis, Visual Stimuli
How Distinctive Are ADHD and RD? Results of a Double Dissociation Study
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de Jong, Christien G. W.; Van De Voorde, Severine; Roeyers, Herbert; Raymaekers, Ruth; Oosterlaan, Jaap; Sergeant, Joseph A. – Journal of Abnormal Child Psychology, 2009
The nature of the comorbidity between Attention-Deficit/Hyperactivity Disorder (ADHD) and Reading Disability (RD) was examined using a double dissociation design. Children were between 8 and 12 years of age and entered into four groups: ADHD only (n = 24), ADHD+RD (n = 29), RD only (n = 41) and normal controls (n = 26). In total, 120 children…
Descriptors: Hyperactivity, Inhibition, Short Term Memory, Language Processing
Which Executive Functioning Deficits Are Associated with AD/HD, ODD/CD and Comorbid AD/HD+ODD/CD? (Attention Deficit/hyperactivity Disorder)(Oppositional Defiant Disorder)
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Oosterlaan, Jaap; Scheres, Anouk; Sergeant, Joseph A. – Journal of Abnormal Child Psychology, 2005
This study investigated (1) whether attention deficit/hyperactivity disorder (AD/HD) is associated with executive functioning (EF) deficits while controlling for oppositional defiant disorder/conduct disorder (ODD/CD), (2) whether ODD/CD is associated with EF deficits while controlling for AD/HD, and (3) whether a combination of AD/HD and ODD/CD…
Descriptors: Memory, Hyperactivity, Attention Deficit Disorders
Comorbid Problems in ADHD: Degree of Association, Shared Endophenotypes, and Formation of Distinct Subtypes. Implications for a Future "DSM"
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Rommelse, Nanda N. J.; Altink, Marieke E.; Fliers, Ellen A.; Martin, Neilson C.; Buschgens, Cathelijne J. M.; Hartman, Catharina A.; Buitelaar, Jan K.; Faraone, Stephen V.; Sergeant, Joseph A.; Oosterlaan, Jaap – Journal of Abnormal Child Psychology, 2009
We aimed to assess which comorbid problems (oppositional defiant behaviors, anxiety, autistic traits, motor coordination problems, and reading problems) were most associated with Attention-Deficit/Hyperactivity Disorder (ADHD); to determine whether these comorbid problems shared executive and motor problems on an endophenotype level with ADHD; and…
Descriptors: Behavior Problems, Siblings, Hyperactivity, Anxiety
Inhibition, Reinforcement Sensitivity and Temporal Information Processing in ADHD and ADHD+ODD: Evidence of a Separate Entity?
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Luman, Marjolein; van Noesel, Steffen J. P.; Papanikolau, Alky; Van Oostenbruggen-Scheffer, Janneke; Veugelers, Diane; Sergeant, Joseph A.; Oosterlaan, Jaap – Journal of Abnormal Child Psychology, 2009
This study compared children with ADHD-only, ADHD+ODD and normal controls (age 8-12) on three key neurocognitive functions: response inhibition, reinforcement sensitivity, and temporal information processing. The goal was twofold: (a) to investigate neurocognitive impairments in children with ADHD-only and children with ADHD+ODD, and (b) to test…
Descriptors: Attention Deficit Disorders, Inhibition, Rewards, Cognitive Processes
Modulation of Response Timing in ADHD, Effects of Reinforcement Valence and Magnitude
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Luman, Marjolein; Oosterlaan, Jaap; Sergeant, Joseph A. – Journal of Abnormal Child Psychology, 2008
The present study investigated the impact of reinforcement valence and magnitude on response timing in children with ADHD. Children were required to estimate a 1-s interval, and both the median response time (response tendency) and the intrasubject-variability (response stability) were investigated. In addition, heart rate and skin conductance…
Descriptors: Metabolism, Reaction Time, Attention Deficit Disorders, Feedback (Response)
Are Motor Inhibition and Cognitive Flexibility Dead Ends in ADHD?
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Rommelse, Nanda N. J.; Altink, Marieke E.; de Sonneville, Leo M. J.; Buschgens, Cathelijne J. M.; Buitelaar, Jan; Oosterlaan, Jaap; Sergeant, Joseph A. – Journal of Abnormal Child Psychology, 2007
Executive dysfunction has been postulated as the core deficit in ADHD, although many deficits in lower order cognitive processes have also been identified. By obtaining an appropriate baseline of lower order cognitive functioning light may be shed on as to whether executive deficits result from problems in lower order and/or higher order cognitive…
Descriptors: Siblings, Reaction Time, Inhibition, Attention Deficit Disorders