Acquired Apraxia of Speech: The Effects of Repeated Practice and Rate/Rhythm Control Treatments on Sound Production Accuracy Purpose This investigation was designed to elucidate the effects of repeated practice treatment on sound production accuracy in individuals with apraxia of speech (AOS) and aphasia. A secondary purpose was to determine if the addition of rate/rhythm control to treatment provided further benefits beyond those achieved with repeated practice. ... Supplement Article
Supplement Article  |   May 01, 2012
Acquired Apraxia of Speech: The Effects of Repeated Practice and Rate/Rhythm Control Treatments on Sound Production Accuracy
 
Author Affiliations & Notes
  • Julie L. Wambaugh
    VA Salt Lake City Health Care System, UT
    University of Utah, Salt Lake City
  • Christina Nessler
    VA Salt Lake City Health Care System, UT
  • Rosalea Cameron
    VA Salt Lake City Health Care System, UT
    University of Utah, Salt Lake City
  • Shannon C. Mauszycki
    VA Salt Lake City Health Care System, UT
    University of Utah, Salt Lake City
  • Correspondence to Julie Wambaugh: Julie.wambaugh@health.utah.edu
  • Editor: Swathi Kiran
    Editor: Swathi Kiran×
  • Associate Editor: Diane Kendall
    Associate Editor: Diane Kendall×
Article Information
Speech, Voice & Prosodic Disorders / Apraxia of Speech & Childhood Apraxia of Speech / Hearing & Speech Perception / Acoustics / Supplement: Select Papers From the 41st Clinical Aphasiology Conference
Supplement Article   |   May 01, 2012
Acquired Apraxia of Speech: The Effects of Repeated Practice and Rate/Rhythm Control Treatments on Sound Production Accuracy
American Journal of Speech-Language Pathology, May 2012, Vol. 21, S5-S27. doi:10.1044/1058-0360(2011/11-0102)
History: Received August 15, 2011 , Accepted November 16, 2011
 
American Journal of Speech-Language Pathology, May 2012, Vol. 21, S5-S27. doi:10.1044/1058-0360(2011/11-0102)
History: Received August 15, 2011; Accepted November 16, 2011
Web of Science® Times Cited: 6

Purpose This investigation was designed to elucidate the effects of repeated practice treatment on sound production accuracy in individuals with apraxia of speech (AOS) and aphasia. A secondary purpose was to determine if the addition of rate/rhythm control to treatment provided further benefits beyond those achieved with repeated practice.

Method A single-subject design was employed with 10 speakers with chronic AOS and aphasia. Articulation accuracy served as the dependent measure. Participants received repeated practice treatment until a plateau in performance was observed or high levels of accuracy were achieved. If performance criterion was not reached, rate/rhythm control was added to the treatment to determine if additional gains would be made.

Results For 8 of the participants, improvements were evident for all applications of repeated practice treatment, and positive response generalization was observed in most cases. When rate/rhythm control treatment was applied, modest additional gains were apparent for the majority of the applications. The 2 participants who did not benefit from repeated practice treatment also did not show improvements with rate/rhythm control treatment.

Conclusions Repeated practice treatment resulted in improved articulation for the majority of participants. The amount of improvement varied within and across participants. Rate/rhythm control appeared to have limited additional benefits for some participants.

Acknowledgment
This research was supported by the Department of Veterans Affairs, Rehabilitation Research and Development.
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