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Title: Development of Vocalizations in Deaf and Normally Hearing Infants
Written By: Christine J. Clement

This thesis is an attempt to answer the question of whether vocalization
development in infants is influenced by hearing and, if that is the case,
from what age onwards. In order to be able to answer this question, we
studied the vocalization development of two groups of infants; six deaf
infants (with a hearing loss over 90 dB PTA) and six normally hearing
infants. All infants were longitudinally studied in their first year of
life. The vocalizations were studied with respect to several aspects, such
as number of sound productions, utterance duration, voicing and types of
consonant-like segments.

The results of this study show that, already within the first months of
life, deaf infants produce differences in their vocalizations with respect
to several of these aspects. When relating these results to stages in
vocalization development as found in normally hearing infants, such as
babbling, we found that deaf infants produce some of these stages, although
the emerge of some stages could be in a different order, delayed or even
absent, compared to normally hearing infants. Moreover, the deaf infants
produce some specific types of vocalizations that seem unrelated to the
vocalization stages. The main conclusion of this thesis is that, already
within the first half year of life, sound production is not solely
determined by motor development and other maturational factors, but also by
hearing. The results of this study have theoretical implications, as well
as practical implications for early intervention programs for deaf infants.

Publication Year: 2004
Publisher: Netherlands Graduate School of Linguistics / Landelijke (LOT)
Review: Not available for review. If you would like to review a book on The LINGUIST List, please login to view the AFR list.
BibTex: View BibTex record
Linguistic Field(s): Phonetics
Language Acquisition
Subject Language(s): None
Language Family(ies): None

Format: Electronic
ISBN: 9789078328
ISBN-13: N/A
Pages: 276
Prices: ---- 0.00
U.K. £ 28.27