Auditory Sensitivity and the Prelinguistic Vocalizations of Early-Amplified Infants
Barbara L. Davis University of Texas at Austin Contact author: Deborah von Hapsburg, who is now at the Department of Audiology and Speech Pathology, University of Tennessee, Knoxville, 548 South Stadium Hall, Knoxville, TN. E-mail: dvh{at}utk.edu PURPOSE: Vocalization development has not been studie...
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Published in | Journal of speech, language, and hearing research Vol. 49; no. 4; pp. 809 - 822 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
ASHA
01.08.2006
American Speech-Language-Hearing Association (ASHA) American Speech-Language-Hearing Association |
Subjects | |
Online Access | Get full text |
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Summary: | Barbara L. Davis
University of Texas at Austin
Contact author: Deborah von Hapsburg, who is now at the Department of Audiology and Speech Pathology, University of Tennessee, Knoxville, 548 South Stadium Hall, Knoxville, TN. E-mail: dvh{at}utk.edu
PURPOSE: Vocalization development has not been studied thoroughly in infants with early-identified hearing loss who receive hearing aids in the 1st year of life. This study sought to evaluate the relationship between auditory sensitivity and prelinguistic vocalization patterns in infants during the babbling stage.
METHOD: Spontaneous vocalizations of 15 early-identified infants with varying degrees of hearing sensitivity, from normal to profound hearing loss, were audiotaped and perceptually transcribed. Associations between the infant's unaided pure-tone average and the following vocalizations were explored: canonical babbling ratio, percentage of utterances containing canonical syllables, canonical syllable shapes, number of syllable sequences, and consonant-onset patterns in canonical syllables.
RESULTS: Hearing sensitivity was significantly associated with the percentage of utterances containing canonical syllables, the vocalization types used in utterances, and canonical syllable shapes used by the infants.
CONCLUSIONS: Auditory sensitivity contributes significantly to the emergence of babbling patterns. In addition, there is a need for continued study of the vocalizations of infants with milder forms of hearing loss, because in this study, their vocalizations were highly variable despite having received early amplification.
KEY WORDS: infants, babbling, hearing loss, production
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1092-4388 1558-9102 |
DOI: | 10.1044/1092-4388(2006/057) |