Assessing vocal development in infants and toddlers

The purpose of this study was to examine changes in prelinguistic vocal production during the first 20 months of life. Vocalizations were classified into 23 mutually exclusive and exhaustive types, and grouped into five ascending levels using the Stark Assessment of Early Vocal Development-Revised (...

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Bibliographic Details
Published in:Clinical linguistics & phonetics 2006-07, Vol.20 (5), p.351-369
Main Authors: Nathani, Suneeti, Ertmer, David J., Stark, Rachel E.
Format: Article
Language:English
Subjects:
Age Factors
Analysis of Variance
Child Language
Child language. Acquisition and development
Cross-Sectional Studies
Developmental Stages
Evaluation Methods
Female
Humans
Infant
Infant, Newborn
Infants
Language Acquisition
Linguistics
Longitudinal Studies
Male
Measures (Individuals)
Multivariate Analysis
Phonetics
Prelinguistic speech development
Production and comprehension processes
Psycholinguistics
Psychology of language
Socioeconomic Factors
Speech - physiology
speech assessment
Speech Production Measurement
Tape Recording
Toddlers
Verbal Behavior
Videotape Recording
Vocal Cords - growth & development
vocal development
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Summary:The purpose of this study was to examine changes in prelinguistic vocal production during the first 20 months of life. Vocalizations were classified into 23 mutually exclusive and exhaustive types, and grouped into five ascending levels using the Stark Assessment of Early Vocal Development-Revised (SAEVD-R). Data from 30 typically developing infants, aged 0-20 months, show that older infants attained higher developmental levels on the SAEVD-R than younger infants. Infants 0-2, 3-5, and 6-8 months of age primarily produced vocalizations from Levels 1 (Reflexive), 2 (Control of Phonation), and 3 (Expansion). Infants 9-20 months of age also produced vocalizations from Level 4 (Basic Canonical Syllables). Only infants from 16-20 months of age produced Level 5 (Advanced Forms) vocalizations in significant quantities. The outcomes indicate that the SAEVD-R is a valuable instrument for evaluating prelinguistic vocal development.
ISSN:0269-9206
1464-5076
DOI:10.1080/02699200500211451