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| Author(s): |
Rayssa Beatriz Onuki de Moura
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Marília. 2019-03-25. |
| Institution: | Universidade Estadual Paulista (Unesp). Faculdade de Filosofia e Ciências. Marília |
| Defense date: | 2019-02-28 |
| Advisor: | Cristiane Moço Canhetti de Oliveira |
| Abstract | |
Speech rate may play an important role in the variability of stuttering. Although speech rate reduction was widely used in stuttering therapy, no evidence was found for its effects on fluency parameters of adults with stuttering in the compiled literature. Therefore, the general purpose of this study was to verify the effects of induced rapid speech and induced slow speech in the speech fluency of adults with and without stuttering. Twenty adults in the age group from 18 to 45 years old participated, 10 with stuttering that composed the Research Group (RG) and 10 without stuttering, matched by sex and age to RG, who composed the Comparative Group (CG). RG adults had at least 3% of stuttering-like disfluencies and at least 18 points in the Stuttering Severity Instrument (SSI-3). The following procedures were performed: signature of the informed consent form; fluency evaluation of the usual, induced rapid and induced slow rates; application of the self-perception questionnaire; time-acoustic analysis of speech samples by means of Praat software; articulatory rate analysis; and reliability of fluency evaluation. Statistical analysis of the data was performed with the “Wilcoxon Sign Post” test for intragroup analysis, the “Mann-Whitney” test for intergroup analysis and the “Spearman” test for correlation analysis. To detect differences in the three speech rates, the Friedman ANOVA test was used. The Bonferroni Post-Hoc test was applied to verify which groups differed from each other. Significance level adopted for the statistical tests was 0.05. Data analysis was performed using STATISTICA software version 7.0. The results showed that induced rapid speech did not cause effects on RG, while CG increased speech rate. The induced slow speech in RG reduced the frequency of stuttering-like disfluencies (p=0.005), blocks (p=0.007) and prolongations (p=0.018), and increased hesitations (p=0.007). There was a reduction of at least one degree of stuttering severity in induced slow speech in 90% of adults with stuttering. The RG decreased speech rate and there were no effects on disfluencies. The correlation was negative between the frequency of stuttering-like disfluencies and speech rate in both groups. Therefore, it was concluded that slow speech induced was beneficent to adults with stuttering because it promoted fluency, reduction of blocks and prolongations, reduction of all scores of the Stuttering Severity Instrument, and it was described as less uncomfortable, less tense and with less effort by the stuttering adults themselves. (AU) | |
| FAPESP's process: | 17/10905-1 - Effects of alterations in speech rate on fluency of adults with and without stuttering |
| Grantee: | Rayssa Beatriz Onuki de Moura |
| Support Opportunities: | Scholarships in Brazil - Master |