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Phonological error patterns in developmental verbal dyspraxia.

M A Crary, S Landess, R Towne

    Journal of Clinical Neuropsychology
    |May 1, 1984
    PubMed
    Summary
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    Children with Developmental Verbal Dyspraxia exhibit specific phonological errors, mainly sound omissions and timing issues. This suggests a core motor planning deficit impacting expressive language development.

    Area of Science:

    • Speech-Language Pathology
    • Developmental Psychology
    • Neuropsychology

    Background:

    • Developmental Verbal Dyspraxia (DVD) is a complex speech disorder.
    • Understanding phonological error patterns is crucial for diagnosis and intervention.
    • Previous research suggests potential links to motor planning deficits.

    Purpose of the Study:

    • To analyze phonological error patterns in children with symptoms of Developmental Verbal Dyspraxia.
    • To identify dominant error types and their relation to developmental indices.
    • To explore the underlying cause as a central motor planning deficit.

    Main Methods:

    • Analysis of phonological error patterns in 10 children with suspected DVD.
    • Utilizing rank-order correlations to assess relationships between errors and developmental indices.

    Related Experiment Videos

  • Comparative analysis with existing studies on neuropsychological deficits in similar populations.

    • Main Results:

    • A predominance of sequentially constrained errors was observed.
    • Key errors included sound and syllable omissions and timing inaccuracies.
    • Phonological errors of sequential reduction were dominant, indicating a specific expressive language problem.

    Conclusions:

    • The findings strongly suggest a central motor planning deficit in children with Developmental Verbal Dyspraxia.
    • Phonological errors, particularly sequential reduction, are key indicators.
    • Further research into neuropsychological underpinnings is warranted.