Performance of Children with Autism Spectrum Disorders on the Dimension-Change Card Sort Task |
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| Authors: | Gabriel S. Dichter,Lauren M. Turner-Brown,Kristen S. L. Lam,Tia N. Holtzclaw,James W. Bodfish |
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| Affiliation: | (1) Neurodevelopmental Disorders Research Center, University of North Carolina at Chapel Hill School of Medicine, Chapel Hill, USA;(2) Carolina Institute for Developmental Disabilities, University of North Carolina at Chapel Hill School of Medicine, CB# 3366, 101 Manning Drive, Chapel Hill, NC 27599-7160, USA;(3) Department of Psychiatry, University of North Carolina at Chapel Hill School of Medicine, CB# 7160, Chapel Hill, NC 27599-7160, USA;(4) Duke-UNC Brain Imaging and Analysis Center, Duke University Medical Center, Durham, NC 27710, USA;(5) Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Box 3026, Durham, NC 27710, USA;(6) Department of Psychiatry, University of Florida College of Medicine, PO Box 100234, Gainesville, FL 32610-0234, USA;(7) Center for Development and Learning, University of North Carolina at Chapel Hill, CB # 7255, Chapel Hill, NC 27599-7255, USA;(8) Present address: Department of Psychology, University of Alabama, Tuscaloosa, AL 35487, USA |
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| Abstract: | Restricted and repetitive behaviors in autism spectrum disorders have been conceptualized to reflect impaired executive functions. In the present study, we investigated the performance of 6–17-year-old children with and without an autism spectrum disorder on a dimension-change card sort task that explicitly indicated sorting rules on every trial. Diagnostic groups did not differ in speed of responses after the first rule switch or in speed or accuracy on blocks with mixed versus single sort rules. However, performance of the ASD group was significantly slower and less accurate overall than the typically-developing group. Furthermore, within the ASD group, poorer DCCS task performance did not predict more severe autism symptoms. Implications for the executive dysfunction theory of autism are discussed. |
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