Constancy of Interstress Intervals in the Fluent Speech of People Who Stutter During Adaptation Trials The constancy of interstress intervals (ISIs) was studied in the fluent speech of 2 people who stutter during five adaptation trials. Counter to prediction, ISI constancy did not improve as an accompaniment to the reduction of stuttering from Readings 1–5. Overall, the subjects’ ISIs were substantially more variable in duration ... Research Note
Research Note  |   August 01, 1992
Constancy of Interstress Intervals in the Fluent Speech of People Who Stutter During Adaptation Trials
 
Author Affiliations & Notes
  • David Prins
    University of Washington, Seattle
  • Carol P. Hubbard
    University of Washington, Seattle
Article Information
Speech, Voice & Prosodic Disorders / Fluency Disorders / Speech, Voice & Prosody / Speech / Research Note
Research Note   |   August 01, 1992
Constancy of Interstress Intervals in the Fluent Speech of People Who Stutter During Adaptation Trials
Journal of Speech, Language, and Hearing Research, August 1992, Vol. 35, 799-804. doi:10.1044/jshr.3504.799
History: Received April 8, 1991 , Accepted September 23, 1991
 
Journal of Speech, Language, and Hearing Research, August 1992, Vol. 35, 799-804. doi:10.1044/jshr.3504.799
History: Received April 8, 1991; Accepted September 23, 1991

The constancy of interstress intervals (ISIs) was studied in the fluent speech of 2 people who stutter during five adaptation trials. Counter to prediction, ISI constancy did not improve as an accompaniment to the reduction of stuttering from Readings 1–5. Overall, the subjects’ ISIs were substantially more variable in duration than those of 2 nonstutterers. This was accounted for by the subjects’ unusually long ISIs in utterances that placed greater demands on speech motor control processes. Implications for impairment source factors in stuttering are discussed.

Acknowledgment
This research was supported in part by the Graduate School Research Fund, University of Washington, PHS Grant Number RR-07096.
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