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Stoit, Astrid M. B.; van Schie, Hein T.; Slaats-Willemse, Dorine I. E.; Buitelaar, Jan K. – Journal of Autism and Developmental Disorders, 2013
Different views on the origin of deficits in action chaining in autism spectrum disorders (ASD) have been posited, ranging from functional impairments in action planning to internal models supporting motor control. Thirty-one children and adolescents with ASD and twenty-nine matched controls participated in a two-choice reach-to-grasp paradigm…
Descriptors: Psychomotor Skills, Autism, Pervasive Developmental Disorders, Models
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Jaspers, Merlijne; de Winter, Andrea F.; Buitelaar, Jan K.; Verhulst, Frank C.; Reijneveld, Sijmen A.; Hartman, Catharina A. – Journal of Abnormal Child Psychology, 2013
For clinically referred children with Autism Spectrum Disorder (ASD) or Attention Deficit/Hyperactivity Disorder (ADHD) several early indicators have been described. However, knowledge is lacking on early markers of less severe variants of ASD and ADHD from the general population. The aim of the present study is to identify early indicators of…
Descriptors: Pregnancy, Social Behavior, Attention Deficit Hyperactivity Disorder, Adolescents
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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