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Kubitskey-Thesis-7-30-15.pdf (446.9 KB)

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Experience and Perception: How Experience Affects Perception of Naturalness Change in Speakers with Dysarthria

Kubitskey, Katherine M
http://orcid.org/0000-0002-7386-1667
http://rave.ohiolink.edu/etdc/view?acc_num=osu1438186598

Abstract Details

2015, Master of Arts, Ohio State University, Speech Language Pathology.
Introduction: This study examines the effects of listener training on naturalness ratings for subjects with Acquired Childhood Dysarthria (ACD) following acquired brain injury who had participated in a multiple case study design. Pre-treatment, post-treatment, and follow-up assessments of naturalness were obtained from two subjects with dysarthria. Samples of their speech from each subject were presented to untrained listeners, graduate students in speech-language pathology, and trained clinicians to determine whether each group would rate the speakers' naturalness differently. Methods and Procedures: Samples of dysarthric speech from pre-treatment, post-treatment, and follow-up sessions were organized into paired sentences. 71 listeners - 29 untrained listeners, 20 graduate students, and 22 trained clinicians - assessed the pairs by determining which sentence in each pair was more natural. Assessments of each group were performed via chi-square analysis and Fisher Exact tests to determine whether there was a difference in ratings between groups. Outcome and Results: Listener groups differed in their naturalness ratings, with untrained listeners more likely to find post treatment and follow-up sentences more natural across all listening conditions and trained clinicians the least likely to do so. Graduate students' ratings fell between the other groups. A within-group reliability analysis indicated that untrained listeners were most reliable across all ratings and trained the least reliable by a very small margin. Discussion: These results suggest a need for further research on the effects of training on perceptual ratings. The difference in ratings calls into question whose perception of naturalness is most valuable during treatment. The inverse correlation between training and within-group reliability also bears further investigation.
Rebecca McCauley (Advisor)
Stacy Harnish (Committee Member)
37 p.
Speech Therapy

Recommended Citations

Citations

  • Kubitskey, K. M. (2015). Experience and Perception: How Experience Affects Perception of Naturalness Change in Speakers with Dysarthria [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1438186598

    APA Style (7th edition)

  • Kubitskey, Katherine. Experience and Perception: How Experience Affects Perception of Naturalness Change in Speakers with Dysarthria. 2015. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1438186598.

    MLA Style (8th edition)

  • Kubitskey, Katherine. "Experience and Perception: How Experience Affects Perception of Naturalness Change in Speakers with Dysarthria." Master's thesis, Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1438186598

    Chicago Manual of Style (17th edition)

osu1438186598
543
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This open access ETD is published by The Ohio State University and OhioLINK.