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Am J Speech Lang Pathol. 2012 May;21(2):S5-27. doi: 10.1044/1058-0360(2011/11-0102). Epub 2012 Jan 9.

Acquired apraxia of speech: the effects of repeated practice and rate/rhythm control treatments on sound production accuracy.

Author information

  • 1VA Salt Lake City Health Care System, UT, USA. Julie.wambaugh@health.utah.edu

Abstract

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.

PMID:
22230177
[PubMed - indexed for MEDLINE]
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