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Related Experiment Videos

Intact and impaired memory functions in autism

L Bennetto1, B F Pennington, S J Rogers

  • 1University of Denver, Department of Psychology, CO 80208, USA.

Child Development
|August 1, 1996
PubMed
Summary

Individuals with autism exhibit specific memory deficits, particularly in temporal order and source memory, aligning with executive function (EF) theory. These findings suggest a central cognitive limitation in autism spectrum disorder.

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Area of Science:

  • Neurodevelopmental Disorders
  • Cognitive Psychology
  • Autism Spectrum Disorder Research

Background:

  • Autism spectrum disorder (ASD) is frequently associated with executive function (EF) deficits.
  • Previous research suggests a potential overlap in cognitive profiles between individuals with ASD and those with frontal lobe pathology.
  • Understanding specific memory impairments in ASD is crucial for targeted interventions.

Purpose of the Study:

  • To investigate memory functions in high-functioning children and adolescents with autism.
  • To compare memory and EF performance in autism with a matched clinical comparison group.
  • To test the hypothesis that autism presents a pattern of memory deficits consistent with EF impairments.

Main Methods:

  • Comparison of 19 high-functioning children/adolescents with autism and 19 matched clinical comparison subjects.

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  • Assessment of various memory domains including temporal order, source memory, recognition, and working memory.
  • Evaluation of executive functions (EF) and their relationship with cognitive measures.

    • Main Results:

    • The autism group showed significantly poorer performance in temporal order memory, source memory, supraspan free recall, working memory, and EF.
    • No significant differences were observed between groups in short- and long-term recognition, cued recall, or new learning ability.
    • Cognitive measures were more intercorrelated in the autism group, suggesting a central cognitive limitation.

    Conclusions:

    • The findings support the executive function theory of autism, indicating specific memory impairments.
    • Results suggest a potential central cognitive limitation affecting memory and executive functions in autism.
    • Further research into the neurocognitive underpinnings of these memory deficits in ASD is warranted.