A 3-Year Longitudinal Study of School-Aged Children's Fundamental Frequencies This report describes the longitudinal changes that took place in the average fundamental frequencies (fo) of 25 boys and girls over a 3-year period (x age range = 8:2–11:2). Results showed that developmental changes in the central tendency of fo can be detected over a 1-year period. For the group, ... Research Article
Research Article  |   March 01, 1983
A 3-Year Longitudinal Study of School-Aged Children's Fundamental Frequencies
 
Author Affiliations & Notes
  • Suzanne Bennett
    University of Maryland, College Park
Article Information
Research Articles
Research Article   |   March 01, 1983
A 3-Year Longitudinal Study of School-Aged Children's Fundamental Frequencies
Journal of Speech, Language, and Hearing Research, March 1983, Vol. 26, 137-141. doi:10.1044/jshr.2601.137
History: Received December 2, 1981 , Accepted July 7, 1982
 
Journal of Speech, Language, and Hearing Research, March 1983, Vol. 26, 137-141. doi:10.1044/jshr.2601.137
History: Received December 2, 1981; Accepted July 7, 1982

This report describes the longitudinal changes that took place in the average fundamental frequencies (fo) of 25 boys and girls over a 3-year period (x age range = 8:2–11:2). Results showed that developmental changes in the central tendency of fo can be detected over a 1-year period. For the group, the amount of decrease per 12-month interval averaged about 12 Hz, with a standard deviation of about 8 Hz. Cross-sectional observations of 7-11-year-old children's fundamental frequency characteristics do not reflect accurately the developmental course of fo, in large part because the between-subject standard deviations are larger than the age-related changes that occur in children's voices at this stage of development.

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