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On fluency measures in aphasic speech.

P Feyereisen, C Verbeke-Dewitte, X Seron

    Journal of Clinical and Experimental Neuropsychology
    |August 1, 1986
    PubMed
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    Speech fluency in aphasic individuals is consistent across different production conditions. Objective and subjective fluency measures correlate positively, indicating reliable assessment of speech production in aphasia.

    Area of Science:

    • Neurolinguistics
    • Speech-Language Pathology

    Background:

    • Aphasia, a language disorder resulting from brain damage, often impacts speech fluency.
    • Understanding factors affecting fluency measures is crucial for accurate assessment and intervention.

    Purpose of the Study:

    • To investigate how speech production conditions influence fluency measures in aphasic subjects.
    • To analyze the interrelationships among various objective and subjective fluency indicators.

    Main Methods:

    • Collected speech samples from 18 aphasic subjects during conversational and picture-story description tasks.
    • Analyzed measures including mean silence duration, speech tempo, subjective fluency ratings, and grammatical morpheme use.
    • Compared subject rankings across different fluency measures and speech conditions.

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    Main Results:

    • Speech production conditions (conversation vs. picture description) did not significantly alter subject rankings on fluency measures.
    • Objective fluency indicators (silence duration, tempo) were positively correlated with subjective fluency evaluations and grammatical morpheme use.
    • Clinical fluency assessments by Belgian and American clinicians showed good correlation with objective measures.
    • Fluency measures did not correlate with the percentage of content words, suggesting no selective loss of function words.

    Conclusions:

    • Speech fluency measures in aphasia appear robust across different production contexts.
    • Objective and subjective fluency assessments are consistent and reliable.
    • Fluency deficits in aphasia are not solely attributable to a loss of function words.