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    Script Training and Feedback Type in the Treatment of Apraxia of Speech

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    Genre
    Thesis/Dissertation
    Date
    2019
    Author
    Mahoney, Phillip Matthew
    Advisor
    Maas, Edwin
    Committee member
    DeDe, Gayle
    Kohen, Francine
    Department
    Communication Sciences
    Subject
    Speech Therapy
    Apraxia
    Feedback
    Principles of Motor Learning
    Script Training
    Treatment
    Permanent link to this record
    http://hdl.handle.net/20.500.12613/1811
    
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    DOI
    http://dx.doi.org/10.34944/dspace/1793
    Abstract
    Acquired apraxia of speech (AOS) is a type of motor speech disorder (MSD) characterized by deficits in the motor planning or programming of speech movements (Duffy, 2005). Because AOS is often a chronic condition that may severely impair intelligibility and, thus, significantly reduce quality of life (Ballard et al., 2015), it is necessary to develop efficient and effective treatment protocols. A previous study by Youmans, Youmans, and Hancock (2011), demonstrated the efficacy of script training in the treatment of AOS. Furthermore, extensive research in general motor learning has shown that feedback is one of the most important components of motor learning (Schmidt & Lee, 2011). Research devoted specifically to speech motor learning has generally favored this view, though few studies have distinguished between the two major types of feedback: feedback providing knowledge of results (KR) and feedback providing knowledge of performance (KP). The present study is the first to examine feedback type in treatment for AOS, and the first to examine the utility of script training specifically for a participant with AOS, but no aphasia. The findings from this single-case experimental design study reveal that, compared to KR, KP resulted in greater improvements in speaking rate. KR and KP feedback resulted in comparable gains for accuracy, but condition differences were difficult to interpret due to unexpected rising baselines for the KR scripts. Both KR and KP scripts, but especially the KP scripts, outperformed the untreated control scripts, providing further support for the efficacy of script training for AOS.
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