Middle Eastern Journal of Disability Studies

Mendeley  

Zotero  

Arbabshirani N, Shafiei B, Maracy M R. Effects of Altered Auditory Feedback on Stuttering Frequency of People Who Stutter. MEJDS 2014; 4 (3) :1-9
URL: http://jdisabilstud.org/article-1-377-en.html

Objective: The aim of the present research was to investigate and compare the effects of different altered auditory feedback conditions including delayed auditory feedback (DAF) and frequency altered feedback (FAF) on stuttering frequency by means of percentage of syllables stuttered (SS%) in persons who stuttered during monologue speech production.

Methods & Material: Twenty-two 17-44 year-old persons who stuttered participated in this study. Each one produced 14 monologue speech samples. On the whole, a total of 308 samples under 6 different altered auditory feedback conditions and a control one were produced. The research was done in 2 sessions using the Fluency Coach Software.

Results: On average, the altered auditory feedback decreased stuttering by 54% and 52% in session one and two, respectively. All 6 altered auditory feedback conditions reduced stuttering frequency in comparison with the control condition. However, this reduction was only significant in 65 ms delay (p=0.001), 75 ms delay (p<0.001), 65 ms delay minus 0.5 octave (p=0.012) and 75 ms delay plus 0.5 octave (p=0.014). The participants’ responses to altered auditory feedback were not equal and varied in the two sessions.

Conclusion: Altered auditory feedback reduces stuttering frequency in monologue speech production, but not all combinations have a significant effect on reducing stuttering. The rate of utilization of this method varies across different persons.