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Pseudo-random number generation in children with high-functioning autism and Asperger's disorder: further evidence for a dissociation in executive functioning?
journal contributionposted on 2006-01-01, 00:00 authored by Nicole Rinehart, J L Bradshaw, S A Moss, A V Brereton, B J Tonge
The repetitive, stereotyped and obsessive behaviours, which are core diagnostic features of autism, are thought to be underpinned by executive dysfunction. This study examined executive impairment in individuals with autism and Asperger's disorder using a verbal equivalent of an established pseudo-random number generating task. Different patterns of disinhibition emerged in the autism (n = 12) and Asperger's disorder (n = 12) groups. Consistent with previous research, the autism group repeated single numbers (e.g. 2, 2, 2) more frequently than the control group. In contrast to past research suggesting intact executive abilities, this study found that the Asperger's disorder group generated more repetitive number patterns (e.g. 45, 45) than the controls. Executive functioning in children with Asperger's disorder may be particularly vulnerable to a lack of visual cueing and concrete rules. Qualitative differences in executive dysfunction between these groups may implicate differential disruption within the fronto-striatal circuitry.
Pagination70 - 85
Publication classificationC1.1 Refereed article in a scholarly journal
Copyright notice2006, SAGE Publications and The National Autistic Society
CategoriesNo categories selected
Asperger SyndromeAutistic DisorderChildCognition DisordersExecutive dysfunctionFemaleHigh-functioning autismHumansMaleMathematicsNeuropsychological TestsNumber generationSeverity of Illness IndexSocial SciencesPsychology, DevelopmentalPsychologyAsperger's disorderBASAL GANGLIAINDIVIDUALSADULTSPERFORMANCEATTENTIONHISTORY