Journal of Speech, Language, and Hearing Research Vol.41 725-743 August 1998.
© American Speech-Language-Hearing Association
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Effects of Treatment for Sound Errors in Apraxia of Speech and Aphasia

Julie L. Wambaugh 1
Michelene M. Kalinyak-Fliszar 2
Joan E. West 2

Patrick J. Doyle 2
1 University of Utah and Salt Lake City VA Medical Center
2 Pittsburgh VA Health Care System Pittsburgh, PA

This investigation was designed to examine the acquisition, generalization, and maintenance effects of a treatment for sound errors in speakers with co-occurring apraxia of speech and aphasia. Three speakers with chronic apraxia of speech and aphasia were studied in the context of a multiple baseline design across speakers and behaviors. Treatment combined the use of minimal contrast pairs with traditional sound production training techniques such as integral stimulation and articulatory placement cueing and was applied sequentially to sounds that were determined to be consistently in error before training. Results revealed increased correct sound productions for all speakers in trained and untrained words. Response generalization effects across sounds and stimulus generalization effects varied, but appeared to be limited for most speakers. Although positive maintenance effects were evidenced, some loss of treatment gains was noted following cessation of treatment.

KEY WORDS: apraxia of speech, motor speech disorder, aphasia

Submitted on April 25, 1997
Accepted on February 9, 1998


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