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Difference of susceptibility to delayed auditory feedback between stutterers and nonstutterers
T Fukawa1, H Yoshioka, E Ozawa
1University of Tsukuba, Institute of Special Education, Japan.
Journal of Speech and Hearing Research
|September 1, 1988
Summary
Stutterers exhibit higher susceptibility to delayed auditory feedback (DAF) than non-stutterers. This suggests individuals who stutter may depend more on auditory feedback for speech regulation.
Area of Science:
- Speech-language pathology
- Auditory processing
- Neuroscience of speech
Background:
- Delayed auditory feedback (DAF) is known to affect speech fluency.
- Understanding individual differences in DAF susceptibility is crucial for speech disorders.
Purpose of the Study:
- To investigate the susceptibility of stutterers and non-stutterers to DAF.
- To explore sex-based differences in DAF susceptibility within these groups.
- To determine if stutterers rely more heavily on auditory feedback for speech control.
Main Methods:
- Forty stutterers and 40 non-stutterers participated.
- Participants read passages under amplified DAF conditions.
- A Susceptibility Index (SI) was developed to quantify DAF sensitivity.
Main Results:
- Stutterers showed significantly higher DAF susceptibility than non-stutterers.
- In non-stutterers, men were more susceptible than women; no sex difference was found in stutterers.
- Non-stuttering women were the least susceptible group.
Conclusions:
- Stutterers' higher DAF susceptibility indicates a greater reliance on auditory feedback for speech control.
- DAF sensitivity varies between sexes in non-stutterers but not in stutterers.
- The Susceptibility Index effectively differentiates speaker sensitivity to DAF.