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Speech fluency and altered auditory feedback: comparison between objective and perceptual measures

Grant number: 14/05265-5
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): February 01, 2015
Effective date (End): September 08, 2018
Field of knowledge:Health Sciences - Speech Therapy
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal researcher:Cláudia Regina Furquim de Andrade
Grantee:Ana Paula Ritto
Home Institution: Faculdade de Medicina (FM). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):17/03520-6 - Speech fluency in bilingual children, BE.EP.DR


INTRODUCTION: Developmental stuttering is a speech disorder characterized by involuntary disruptions on speech flow, though a variety of physiological, behavioral, cognitive and emotional reactions can be observed as a result of these disruptions. Therefore, it is important to consider the social and psychological effects when evaluating and treating people who stutter. PURPOSE: (1) to investigate the correlation between objective measures of stuttering severity (percentage of stuttered syllables and SSI), and individual perceptual measures of quality of life (OASES); and (2) to investigate the impact of the auditory feedback control condition, with the use of SpeechEasy device, on these objectives and perceptual measures for the group of people who stutter. METHODS: This research will have a minimum of 30 participants, 15 in GI (Study Group) and 15 in GII (Control Group). GI will be composed by adults diagnosed with developmental stuttering (minimum moderate), of both genders and with no restrictions regarding socio-economic and cultural levels. GII will be composed by fluent adults matched by gender and age to GI. The steps of the study will be: Initial Evaluation (objective - percentage of stuttered syllables and severity, according to the SSI-3, with spontaneous speech samples -, and subjective - OASES - tests); Research Condition - use of SpeechEasy device - for GI (GI participants will receive SpeechEasy devices and will be instructed to use it daily, at least six hours per day, for 90 days); and Final Evaluation (same procedure of Initial Evaluation). For the statistical analysis, between-group and within-group comparisons (i.e. comparisons without versus with device and comparisons between evaluations) will be performed. It will be further verified the existence of correlation between SSI (objective measure) and OASES (perceptual measure) to verify the compatibility of trust degrees of stuttering severity. In the literature, there are a large number of studies investigating the effects of altered auditory feedback (AAF) on the speech of people who stutter, wich agree that the use these devices can cause an improvement in speech fluency. However, the reduction on stuttering frequency may not necessarily mean an increase in quality of life. It is important to investigate this aspect for understanding the real effectiveness of the treatment with AAF on increasing the well-being of the patient. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RITTO, ANA PAULA; JUSTE, FABIOLA STAROBOLE; STUART, ANDREW; KALINOWSKI, JOSEPH; FURQUIM DE ANDRADE, CLAUDIA REGINA. Randomized clinical trial: the use of SpeechEasy (R) in stuttering treatment. INTERNATIONAL JOURNAL OF LANGUAGE & COMMUNICATION DISORDERS, v. 51, n. 6, p. 769-774, . (14/05265-5, 11/10000-2)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
RITTO, Ana Paula. Speech fluency and altered auditory feedback: comparison between objective and perceptual measurements. 2018. Doctoral Thesis - Universidade de São Paulo (USP). Faculdade de Medicina (FM/SBD) São Paulo.

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