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Direct linkLuman, Marjolein; Oosterlaan, Jaap; Knol, Dirk L.; Sergeant, Joseph A. – Journal of Child Psychology and Psychiatry, 2008
Background: Decision-making and reinforcement sensitivity were investigated in 23 children with ADHD and 20 healthy controls using a gambling paradigm. Methods: Children were required to choose between three alternatives that carried (A) small rewards and small penalties (advantageous), (B) large rewards and increasing penalties and (C) small…
Descriptors: Metabolism, Response Style (Tests), Attention Deficit Disorders, Rewards
Rommelse, Nanda N. J.; Oosterlaan, Jaap; Buitelaar, Jan; Faraone, Stephen V.; Sergeant, Joseph A. – Journal of the American Academy of Child & Adolescent Psychiatry, 2007
Objective: Time reproduction is deficient in children with attention-deficit/hyperactivity disorder (ADHD). Whether this deficit is familial and could therefore serve as a candidate endophenotype has not been previously investigated. It is unknown whether timing deficits are also measurable in adolescent children with ADHD and nonaffected…
Descriptors: Siblings, Hyperactivity, Attention Deficit Disorders, Time
Rommelse, Nanda N. J.; Altink, Marieke E.; Oosterlaan, Jaap; Buschgens, Cathelijne J. M.; Buitelaar, Jan; De Sonneville, Leo M. J.; Sergeant, Joseph A. – Journal of Child Psychology and Psychiatry, 2007
Background: Attention-deficit/hyperactivity disorder (ADHD) is strongly influenced by heritability. Identifying heritable vulnerability traits (endophenotypes) that mark a relatively high risk of developing the disorder can contribute to the identification of risk genes. A fruitful area for the search for such endophenotypes may be motor control…
Descriptors: Siblings, Hyperactivity, Attention Deficit Disorders, Pathology
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
