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Comfortable effort level in young children's speech.

W S Brown1, Rahul Shrivastav

  • 1Department of Communication Sciences and Disorders, University of Florida, Gainesville, FL 32611, USA. wsbrown@csd.ufl.edu <wsbrown@csd.ufl.edu>

Folia Phoniatrica Et Logopaedica : Official Organ of the International Association of Logopedics and Phoniatrics (IALP)
|August 30, 2007
PubMed
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Young children exhibit similar vocal variability to adults. This study measured speaking fundamental frequency (SFF) and vocal intensity (VI) in children aged 3-4, finding consistent levels across sessions.

Area of Science:

  • Speech-language pathology
  • Child development
  • Acoustic phonetics

Background:

  • Variability in speaking fundamental frequency (SFF) and vocal intensity (VI) is documented in adults.
  • Limited data exist on vocal variability in young children.
  • Understanding vocal production in children is crucial for developmental assessments.

Purpose of the Study:

  • To determine the test-retest variability of SFF and VI in normally developing young children.
  • To establish a baseline for vocal output variability in early childhood.
  • To compare vocal variability in young children to that of adults.

Main Methods:

  • Fifteen males and 14 females (3-4 years old) participated.
  • Participants repeated a vowel, sentence, and four words on three separate days, one week apart.

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  • Speaking fundamental frequency (SFF) and vocal intensity (VI) were measured for each utterance.

    • Main Results:

    • No significant differences in mean SFF or VI were found across the test sessions.
    • Young females demonstrated generally higher vocal intensity (VI) compared to young males.
    • Overall vocal variability in young children was comparable to adult speakers.

    Conclusions:

    • Normally developing young children show comparable SFF and VI variability to adults.
    • These findings provide normative data for vocal variability in early childhood.
    • The results support the use of SFF and VI measures in pediatric speech assessments.