Purpose: There is evidence to support the Motor Learning Guided (MLG) approach as a feasible and effective treatment for speech production impairments. To achieve the next step in providing a solid evidence base, the current study compares the more recently developed MLG with an established treatment (Sound Production Treatment; SPT) in a randomized study of training novel speech in healthy adults. Methods: Twenty native English speakers between the ages of 18-30 with no history of neurological, speech, or hearing disorder with less than 2 years of Spanish more than 2 years ago participated in this study. Participants were randomly assigned to receive training of novel speech phrases using the MLG training protocol or the SPT training protocol. Target stimuli consisted of five Spanish "tongue twister" phrases. A control set of five Spanish "tongue twisters" balanced for syllable length and target sounds were used to identify generalization of learning. Three baseline measures were collected followed by four training sessions, a 1-week and 2-week follow-up. Baseline, 1-week and 2-weeks post-training measures also included the control phrases to assess generalization. Results: Two-way repeated measure ANOVA's were performed to examine treatment affects both within and between groups. There were statistically significant treatment effects for each training group and the pattern of learning for the novel speech targets was virtually equivalent between the MLG training group and the SPT training group. The training effect was maintained, with no significant decline across the two post treatment measures. Generalization, identified by performance on control set of phrases at baseline, 1 week and 2 weeks post measures was noted. Specifically, there was a significant improvement over time however, the speech gains were not as great as the trained phrases and there was no statistically significant difference between groups. Conclusion: These two methods were effective in training novel speech utterances to our participants. This further validates MLG as a treatment protocol offering good concurrent validity with an established treatment protocol (SPT). The primary purpose for comparing these two methods was to establish that both methods are effective treatments for individuals with motor speech impairment. This preliminary investigation has provided an important step in that direction. / A Dissertation submitted to the School of Communication Science and Disorders in partial fulfillment of the requirements
for the degree of Doctor of Philosophy. / Summer Semester, 2014. / July 16, 2014. / Apraxia of Speech, Healthy Adults, Motor Speech Disorders, Principles of Motor Learning, Speech Motor Learning, Treatment Methods / Includes bibliographical references. / Julie A. G. Stierwalt, Professor Directing Dissertation; Gary Heald, University Representative; Leonard L. LaPointe, Committee Member; Megan K. MacPherson, Committee Member.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_254446 |
| Contributors | Johnson, Rachel K. (authoraut), Stierwalt, Julie A. G. (professor directing dissertation), Heald, Gary (university representative), LaPointe, Leonard L. (committee member), MacPherson, Megan K. (committee member), School of Communication Science and Disorders (degree granting department), Florida State University (degree granting institution) |
| Publisher | Florida State University, Florida State University |
| Source Sets | Florida State University |
| Language | English, English |
| Detected Language | English |
| Type | Text, text |
| Format | 1 online resource, computer, application/pdf |
| Rights | This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them. |
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