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American Journal of Speech-Language Pathology Vol.4 139-142 November 1995.
© American Speech-Language-Hearing Association
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Features of Spontaneous Language in Speakers With Amyotrophic Lateral Sclerosis and Dysarthria

Constance Wilkinson 1
Kathryn M. Yorkston 1
Edythe A. Strand 1

Margaret Rogers 1
1 University of Washington, Seattle

Language samples (picture description) produced by moderately dysarthric speakers with ALS were compared with those of gender- and age-matched controls. Results indicated that dysarthric speakers produced the same number of concepts but fewer words than controls. Efficiency (as measured by content units/minute and words/content unit) was maintained in the dysarthria group by shortening phrases, reducing the proportion of mazes, and increasing the number of nongrammatical phrases. Measures of vocabulary were not different for the two groups. Three possible explanations for the "economy of wording" strategy are: (a) response to increasingly effortful speech, (b) subtle language deficits, and (c) response to slowed speaking rates.

Key Words: dysarthria, language, amyotrophic lateral sclerosis


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