Document Detail

Mean Length of Utterance before words and grammar: longitudinal trends and developmental implications of infant vocalizations.
MedLine Citation:
PMID:  18922207     Owner:  NLM     Status:  MEDLINE    
This study measured longitudinal change in six parameters of infant utterances (i.e. number of sounds, CV syllables, supraglottal consonants, and repetitions per utterance, temporal duration, and seconds per sound), investigated previously unexplored characteristics of repetition (i.e. number of vowel and CV syllable repetitions per utterance) and analyzed change in vocalizations in relation to age and developmental milestones using multilevel models. Infants (N=18) were videotaped bimonthly during naturalistic and semi-structured activities between 0 ; 3 and the onset of word use (M=11.8 months). Results showed that infant utterances changed in predictable ways both in relation to age and in relation to language milestones (i.e. reduplicated babble onset, word comprehension and word production). Looking at change in relation to the milestones of language development led to new views of babbling, the transition from babbling to first words, and processes that may underlie these transitions.
Mary K Fagan
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2008-10-16
Journal Detail:
Title:  Journal of child language     Volume:  36     ISSN:  0305-0009     ISO Abbreviation:  J Child Lang     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-05-18     Completed Date:  2009-07-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0425743     Medline TA:  J Child Lang     Country:  England    
Other Details:
Languages:  eng     Pagination:  495-527     Citation Subset:  IM    
University of Missouri-Columbia.
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MeSH Terms
Child Language*
Linear Models
Longitudinal Studies
Reproducibility of Results
Speech Production Measurement
Time Factors
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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