TY - JOUR ID - 16741 TI - Determination and comparison of reaction time of phonation in stutterers and non-stutterers in two group of age 10-20, 20-30 JO - Journal of Research in Rehabilitation Sciences JA - JRRS LA - en SN - 1735-7519 AU - Nikkhah, Sepide AU - Shafiei, Bijan AU - Hasanzadeh, Akbar AD - MSc, Department of Speech Therapy, School of Rehabilitation Sciences, Isfahan University of Medical sciences, Isfahan, Iran AD - Lecture, Academic Member, Department of Speech Therapy, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan, Iran AD - MSc, Department of Biostatistics and Epidemiology, School of Health, Isfahan University of Medical sciences, Isfahan, Ira Y1 - 2013 PY - 2013 VL - 9 IS - 4 SP - EP - DO - 10.22122/jrrs.v9i4.873 N2 - AbstractIntroduction: Some researcher suggest that stuttering is a temporal disruption of the simultaneous and successive programming of muscular movements required to produce a speech sound and they say  speech  motor in stutterers associated with reduced timing variable rather than  non stutterers such as reaction time. Reaction time is a standard criterion that can show nature of differences of phonation between stutterers and non-stutterers. The aim of this study is determination and comparison of reaction time of phonation in stutterers and non-stutterers   .materials and Methods: this was descriptive- analytic study and selected 22 stutterers and 22 no stutterers from 10-30 years old and request them when heard stimulation as quickly as possible in response then recorded both of stimulation and answers by Praat software and measured interval between them.Result: result of this study show mean of reaction time in stutterers is more than no stutterers and this difference is more significant in 20-30 years old. But differences in two group of age do not significant.Conclusion:  to consider, there is problem in voice onset in stutterers so this problem can be result from slower VRT could result problem such as struggle, avoiding and anticipatory behaviors, disorder in neuro-motor factors, timing force that stutterers feel in this task that this problem specially in adult stutteres are more than children because they have more experience in stuttering.Keyword: stuttering, reaction time, fluent speech, Praat software  UR - https://jrrs.mui.ac.ir/article_16741.html L1 - https://jrrs.mui.ac.ir/article_16741_1ac8ee65c3d89849aaf3cf147b6170ed.pdf ER -