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Related Experiment Videos

Phonological processes, confrontational naming, and immediate memory in dyslexia

P T Ackerman1, R A Dykman

  • 1Department of Psychiatry, University of Arkansas for Medical Sciences UAMS.

Journal of Learning Disabilities
|November 1, 1993
PubMed
Summary

Dyslexic children differ from slow/borderline readers, who share deficits in phonological sensitivity, naming speed, and memory span with children having attention deficit disorder (ADD). These factors significantly predict reading ability.

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Area of Science:

  • Developmental Psychology
  • Neuroscience
  • Educational Psychology

Background:

  • Distinguishing subtypes of reading difficulties is crucial for targeted interventions.
  • Developmental dyslexia and attention deficit disorder (ADD) can co-occur, complicating diagnosis and treatment.
  • Previous research suggests overlapping and distinct cognitive profiles in poor readers.

Purpose of the Study:

  • To differentiate between dyslexic poor readers and slow/borderline poor readers using cognitive measures.
  • To investigate the relationship between phonological processing, naming speed, memory span, and reading skills.
  • To determine if attentional problems are linearly related to reading skill in a clinic sample.

Main Methods:

  • Compared dyslexic children (n=42) with attention deficit disorder (ADD) readers (n=56) and slow/borderline readers (n=21).

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  • Assessed phonological processing, speech rate, naming speed, memory span, and mental addition.
  • Utilized stepwise regression to identify predictors of word list reading level.

    • Main Results:

    • Dyslexic and slow/borderline groups were distinguishable.
    • Slow/borderline readers did not differ from ADD readers on simple auditory phonological sensitivity, continuous naming speed, and running memory span.
    • These three measures explained an additional 22% of reading variance after accounting for age and verbal IQ, with nonsense word reading being the best predictor.

    Conclusions:

    • Cognitive profiles can differentiate subtypes of reading difficulties.
    • Phonological sensitivity, naming speed, and memory span are key predictors of reading ability, particularly in differentiating dyslexia from other reading impairments.
    • Severity of attention problems did not show a linear relationship with reading skill in this sample.