altered auditory feedback, traditional treatment, Parkinson disease, speaking rate, intelligibility


Because relatively little evidence has been published that compares the long-term effects of different dysarthria treatments, the authors undertook a study to document changes in speech rate and intelligibility in response to two types of intervention. Rate control is taught in many speech-language pathology training programs as a means to improve speech intelligibility, and thus it was a logical choice for the present study. Likewise, AAF has been shown to impact both normal and disordered speech, in most cases resulting in reduced rate. In theory, either approach should have a positive effect on speech, since individuals with neuromotor control deficits would have more time to reach their articulatory targets. However, as the authors of the present study noted, the relationship between speaking rate and intelligibility is not simple (Van Nuffelen, De Bodt, Vanderwegen, Van de Heyning, & Wuyts, 2010).

Original Publication Citation

Dromey, C. (2011). Traditional treatment and altered auditory feedback lead to intelligibility benefits in a subset of speakers with Parkinson disease. Evidence-based Communication Assessment and Intervention, 5, 15-18.

Document Type

Peer-Reviewed Article

Publication Date


Permanent URL


Taylor & Francis




David O. McKay School of Education


Communication Disorders