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Related Experiment Videos

Specific impairment in developmental reading disabilities: a working memory approach.

Michelle Y Kibby1, William Marks, Sam Morgan

  • 1Department of Psychology, Washington State University, Pullman 99164-4820, USA.

Journal of Learning Disabilities
|October 21, 2004
PubMed
Summary

Children with reading disabilities (RD) show impaired phonological loop function, specifically in the phonological store. Their visual-spatial sketchpad and central executive functions remain intact, suggesting a targeted working memory deficit in RD.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Developmental Psychology

Background:

  • Children with reading disabilities (RD) often exhibit working memory impairments.
  • Previous research on the specific nature of these working memory deficits has yielded inconsistent results.
  • Understanding the precise cognitive mechanisms underlying RD is crucial for effective intervention.

Purpose of the Study:

  • To comprehensively assess Baddeley's working memory model in children with RD.
  • To clarify the specific components of working memory affected in reading disabilities.
  • To investigate the relationship between phonological processing and working memory in RD.

Main Methods:

  • Assessed 20 children with RD and 20 typical readers (ages 9-13) using tasks targeting Baddeley's working memory model.

Related Experiment Videos

  • Evaluated the phonological loop, visual-spatial sketchpad, and central executive components.
  • Compared performance between the RD group and the control group.

    • Main Results:

    • Children with RD demonstrated significantly impaired phonological loop functioning compared to controls.
    • The deficit within the phonological loop was localized to the phonological store component.
    • Visual-spatial sketchpad and central executive functions were found to be intact in children with RD.
    • A significant relationship was observed between phonological processing abilities and phonological loop functioning.

    Conclusions:

    • The working memory deficit in reading disabilities is specific to the phonological loop, particularly the phonological store.
    • Visual-spatial and central executive functions are not impaired in children with RD.
    • Findings support a strong link between phonological loop function and phonological processing in the development of reading skills.