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Speech disfluencies under normal and delayed auditory feedback conditions.
Perceptual and Motor Skills
|April 1, 1983
Summary
Delayed auditory feedback (DAF) significantly impacts speech disfluencies in adults. Shorter DAF durations showed stronger negative correlations with disfluency changes, indicating altered speech patterns under auditory delay.
Area of Science:
- Speech-Language Pathology
- Auditory Processing
- Human Communication
Background:
- Delayed auditory feedback (DAF) is known to affect speech fluency.
- Understanding the precise relationship between DAF duration and disfluency is crucial for speech research.
Purpose of the Study:
- To investigate the effect of varying durations of delayed auditory feedback on speech disfluencies.
- To determine the correlation between initial disfluency levels and responses to DAF.
Main Methods:
- Forty adults (20 male, 20 female) were exposed to normal and six DAF conditions (113-347 msec).
- Disfluency counts were measured and correlated with DAF reactions.
- A two-way analysis of variance compared reactions between high and low initial disfluency groups.
Main Results:
- Significant negative correlations were found between DAF duration and disfluency changes for delays of 113, 153, 200, 253, and 307 msec.
- Both group (high vs. low initial disfluency) and delay time were significant main effects.
- The interaction between group and delay time was not significant.
Conclusions:
- Speech disfluencies are significantly altered by delayed auditory feedback, particularly at shorter delay durations.
- Individuals with higher initial disfluency counts exhibit different responses to DAF compared to those with lower counts.
- DAF is a significant factor influencing speech production, with duration being a key variable.