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Related Experiment Videos

Atypical lexical/semantic processing in high-functioning autism spectrum disorders without early language delay.

Yoko Kamio1, Diana Robins, Elizabeth Kelley

  • 1Department of Child and Adolescent Mental Health, National Institute of Mental Health, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, 187-8553, Tokyo, Japan. kamio@ncnp.go.np

Journal of Autism and Developmental Disorders
|November 3, 2006
PubMed
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Individuals with Asperger's Disorder (AS) or high-functioning pervasive developmental disorders (HFPDD) show impaired semantic priming. This suggests difficulties in automatic language processing, even without early language delays.

Area of Science:

  • Neuroscience
  • Psycholinguistics
  • Developmental Psychology

Background:

  • Autism Spectrum Disorder (ASD) is often linked to language impairments.
  • The specific nature of semantic processing deficits in high-functioning PDD (HFPDD) without early language delay remains unclear.
  • Understanding these deficits is crucial for targeted interventions.

Purpose of the Study:

  • To investigate automatic lexical/semantic processing in individuals with AS or HFPDD-Not Otherwise Specified (NOS).
  • To determine if semantic priming effects are impaired in this population.
  • To compare language processing in PDD subtypes.

Main Methods:

  • A semantic decision task was employed using an indirect priming paradigm.
  • Eleven participants with AS or HFPDD-NOS were compared to age-, IQ-, and gender-matched controls.

Related Experiment Videos

  • Four experimental conditions were utilized to assess semantic priming.

    • Main Results:

    • Typically developing controls exhibited significant semantic priming effects for near-semantically related word pairs.
    • Participants with AS or HFPDD-NOS did not show significant semantic priming effects.
    • This indicates a potential impairment in automatic semantic language processing.

    Conclusions:

    • The findings suggest that automatic lexical/semantic aspects of language processing may be impaired in individuals with AS and HFPDD-NOS.
    • These results highlight similarities in semantic processing challenges across different PDD subtypes.
    • Further research is needed to explore the full spectrum of language difficulties in HFPDD.