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Relationships between duration and temporal variability in children's speech.

B L Smith1

  • 1Department of Communication Sciences and Disorders, Northwestern University, Evanston, Illinois 60208.

The Journal of the Acoustical Society of America
|April 1, 1992
PubMed
Summary
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As children age, their speech duration and temporal variability decrease, indicating neuromotor maturation. However, these two factors are not as closely correlated as previously assumed in speech development.

Area of Science:

  • Speech-Language Pathology
  • Developmental Psychology
  • Neuroscience

Background:

  • Speech production development involves decreasing duration and temporal variability with age.
  • These temporal measures are considered indicators of neuromotor maturation in children's speech.
  • A close correlation between duration and variability is often assumed.

Purpose of the Study:

  • To examine the relationship between duration and intrasubject variability in children's speech.
  • To determine if these two measures of neuromotor maturation are closely correlated.
  • To compare the developmental trajectories of duration and variability.

Main Methods:

  • Analysis of temporal data from children aged approximately 2.5 to 9.5 years.
  • Examination of speech duration measures.

Related Experiment Videos

  • Assessment of intrasubject variability in speech timing.

    • Main Results:

    • The correlation between duration and intrasubject variability was not as strong as expected.
    • Children's duration measures appeared more adultlike compared to their variability measures.
    • Developmental trends show differing rates for duration and variability.

    Conclusions:

    • The assumed close correspondence between speech duration and temporal variability in development may be overstated.
    • Duration may mature faster or differently than variability in pediatric speech.
    • Further research is needed to understand the distinct developmental pathways of these neuromotor indicators.