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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
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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
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De Zeeuw, Patrick; Aarnoudse-Moens, Cornelieke; Bijlhout, Joyce; Konig, Claudia; Uiterweer, Annebeth Post; Papanikolau, Alky; Hoogenraad, Caecilia; Imandt, Lieke; De Been, Debbie; Sergeant, Joseph A.; Oosterlaan, Jaap – Journal of the American Academy of Child & Adolescent Psychiatry, 2008
The study aims to investigate the influence of inhibitory performance, response speed, intraindividual variability and response accuracy in distinguishing children from those with Attention-deficit/Hyperactivity (ADHD) syndrome from normal healthy children. The results conclude that there exist large number of differences in the symptoms between…
Descriptors: Symptoms (Individual Disorders), Hyperactivity, Attention Deficit Disorders, Inhibition
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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
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Raaijmakers, Maartje A. J.; Smidts, Diana P.; Sergeant, Joseph A.; Maassen, Gerard H.; Posthumus, Jocelyne A.; van Engeland, Herman; Matthys, Walter – Journal of Abnormal Child Psychology, 2008
The question whether executive function (EF) deficits in children are associated with conduct problems remains controversial. Although the origins of aggressive behavior are to be found in early childhood, findings from EF studies in preschool children with aggressive behavior are inconsistent. The current study aimed to investigate whether…
Descriptors: Aggression, Females, Preschool Children, Inhibition
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Marzocchi, Gian Marco; Oosterlaan, Jaap; Zuddas, Alessandro; Cavolina, Pina; Geurts, Hilde; Redigolo, Debora; Vio, Claudio; Sergeant, Joseph A. – Journal of Child Psychology and Psychiatry, 2008
Background: The object of this study was to analyze the executive functioning of children with attention deficit hyperactivity disorder (ADHD) or reading disability (RD) independent of their non-executive deficits. Methods: Three carefully diagnosed groups of children, aged between 7 and 12 years (35 ADHD, 22 RD and 30 typically developing…
Descriptors: Phonetics, Attention Deficit Hyperactivity Disorder, Short Term Memory, Cognitive Processes
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Scheres, Anouk; Oosterlaan, Jaap; Sergeant, Joseph A. – International Journal of Disability, Development & Education, 2006
This study aimed at investigating whether one of the key deficits in Attention Deficit Hyperactivity Disorder (ADHD), slow response inhibition, predicted the response to methylphenidate (MPH) treatment. In order to address this issue, we used Stop Signal Reaction Times (SSRTs) measured at baseline in 20 medication-naive boys with ADHD as…
Descriptors: Inhibition, Attention Deficit Disorders, Foreign Countries, Drug Therapy
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Van Mourik, Rosa; Oosterlaan, Jaap; Sergeant, Joseph A. – Journal of Child Psychology and Psychiatry, 2005
Background: An inhibition deficit, including poor interference control, has been implicated as one of the core deficits in AD/HD. Interference control is clinically measured by the Stroop Colour-Word Task. The aim of this meta-analysis was to investigate the strength of an interference deficit in AD/HD as measured by the Stroop Colour-Word Task…
Descriptors: Attention Deficit Hyperactivity Disorder, Control Groups, Intelligence, Young Adults
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Geurts, Hilde M.; Verte, Sylvie; Oosterlaan, Jaap; Roeyers, Herbert; Sergeant, Joseph A. – Journal of Child Psychology and Psychiatry, 2004
Background: The objective of this study is to identify intact and deficient cognitive processes in children with attention deficit hyperactivity disorder (ADHD) and children with high functioning autism (HFA). Method: Three rigorously diagnosed groups of children aged between 6 and 12 years (54 ADHD, 41 HFA, and 41 normal controls) were tested on…
Descriptors: Attention Deficit Hyperactivity Disorder, Autism, Short Term Memory, Cognitive Processes