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Interspeaker variation in habitual speaking rate: evidence for a neuromuscular component
1Department of Special Education/Communication Disorders, University of Nebraska at Kearney 68849-4590, USA.
Journal of Speech, Language, and Hearing Research : JSLHR
|August 1, 1997
Summary
Neuromuscular factors influence habitual speech rate, but neither neuromuscular nor sociolinguistic hypotheses fully explain individual speaking rate variations. Some individuals show remarkable flexibility in maximum speech rate.
Area of Science:
- Speech Science
- Linguistics
- Neurology
Background:
- Individual speech rate varies significantly.
- Neuromuscular and sociolinguistic factors are proposed to explain these variations.
- Understanding the determinants of speaking rate is crucial for speech science.
Purpose of the Study:
- To investigate the role of neuromuscular and sociolinguistic factors in determining individual speech rates.
- To compare habitual and maximum speech rates across different subject groups.
- To explore potential gender differences in speech rate control.
Main Methods:
- One hundred subjects (50 male, 50 female) read a standardized passage at habitual and maximum rates.
- Subjects were categorized into SLOW and FAST speaking rate subgroups.
- Articulation rate data from 30 selected subjects were analyzed.
Main Results:
- A significant linear relationship was found between habitual and maximum speech rates.
- Distinct maximum speech rates were observed between SLOW and FAST groups.
- Relative changes in speech rate from habitual to maximum were similar for both groups.
- No significant gender differences were detected in speech rate measures.
Conclusions:
- Neuromuscular constraints appear to influence habitual speaking rate.
- Neither neuromuscular nor sociolinguistic hypotheses alone adequately explain individual speaking rate control.
- Some individuals possess an exceptional capacity to increase their maximum speech rate beyond typical constraints.