WISC-IV Profile in High-Functioning Autism Spectrum Disorders: Impaired Processing Speed is Associated with Increased Autism Communication Symptoms and Decreased Adaptive Communication Abilities

  • Rafael E. Oliveras-Rentas
  • Lauren Kenworthy
  • Richard B. RobersonIII
  • Alex Martin
  • Gregory L. Wallace
Original Paper

Abstract

Changes in the Wechsler Intelligence Scales for Children-IV (WISC-IV) may affect the IQ profile characteristic of autism spectrum disorders (ASD). Moreover, the association of particular component cognitive abilities (unlike overall IQ) with symptomatology and adaptive functioning in ASD remains unclear. This archival study characterizes the WISC-IV IQ profile among 56 high-functioning (IQ > 70) children with ASD and correlates WISC-IV performance with ASD and ADHD symptomatology and adaptive functioning. The ASD WISC-IV profile included strengths on Matrix Reasoning and Similarities, weaknesses on Comprehension (which correlated negatively with social symptoms) and the subtests comprising the Processing Speed Index (Coding, Symbol Search). Processing speed task performance correlated negatively with communication symptoms and positively with communication abilities, indicating its importance to functional outcomes in ASD.

Keywords

Autism IQ Processing speed Symptomatology Adaptive behavior ADHD Intelligence 

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Copyright information

© Springer Science+Business Media, LLC (outside the USA) 2011

Authors and Affiliations

  • Rafael E. Oliveras-Rentas
    • 1
  • Lauren Kenworthy
    • 1
  • Richard B. RobersonIII
    • 2
  • Alex Martin
    • 2
  • Gregory L. Wallace
    • 2
  1. 1.Center for Autism Spectrum DisordersChildren’s National Medical CenterWashingtonUSA
  2. 2.Laboratory of Brain & CognitionNational Institute of Mental HealthBethesdaUSA

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