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Executive function deficits in non-retarded autistic children.

B C Shu1, F W Lung, A Y Tien

  • 1School of Nursing, College of Medicine, National Cheng Kung University, Tainan, Taiwan.

Autism : the International Journal of Research and Practice
|November 15, 2001
PubMed
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Children with autism showed significant differences in cognitive flexibility compared to typically developing peers on the Wisconsin Card Sorting Test (WCST). This highlights executive function challenges in autism.

Area of Science:

  • Neurodevelopmental disorders
  • Cognitive psychology
  • Child psychology

Background:

  • Autism Spectrum Disorder (ASD) is a neurodevelopmental condition characterized by social communication deficits and restricted, repetitive behaviors.
  • Executive functions, including cognitive flexibility, are often impaired in individuals with autism.
  • The Wisconsin Card Sorting Test (WCST) is a widely used neuropsychological tool to assess executive functions, particularly set-shifting and abstract reasoning.

Purpose of the Study:

  • To investigate the performance differences on the Wisconsin Card Sorting Test (WCST) between Taiwanese children diagnosed with autism and their typically developing peers.
  • To identify specific executive function deficits in children with autism using the WCST.

Main Methods:

  • A cohort of 26 Taiwanese children with autism (normal IQ) was recruited.

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  • Participants were matched for chronological age with a control group of 52 typically developing children.
  • The Wisconsin Card Sorting Test (WCST) was administered to all participants to assess cognitive flexibility and abstract reasoning.

    • Main Results:

    • Typically developing children achieved significantly higher scores in categories completed and percent conceptual level compared to the autism group.
    • Children with autism exhibited significantly higher scores in perseverative responses, perseverative errors, trials to complete the first category, and non-perseverative errors.
    • These results indicate significant deficits in cognitive flexibility and abstract reasoning in children with autism.

    Conclusions:

    • The findings underscore significant executive function challenges, particularly in cognitive flexibility and abstract reasoning, among Taiwanese children with autism as measured by the WCST.
    • These results have implications for understanding the cognitive profile of autism and developing targeted interventions.
    • Further research is warranted to explore the neurobiological underpinnings and clinical implications of these observed differences.