Age-related changes in acoustic modifications of Mandarin maternal speech to preverbal infants and five-year-old children: A longitudinal study
Resource
Journal of Child Language 36 (4): 909-922
Journal
Journal of Child Language
Journal Volume
36
Journal Issue
4
Pages
909-922
Date Issued
2009
Author(s)
Abstract
ABSTRACTAcoustic-phonetic exaggeration of infant-directed speech (IDS) is well documented, but few studies address whether these features are modified with a child's age. Mandarin-speaking mothers were recorded while addressing an adult and their child at two ages (0 ; 7-1 ; 0 and 5 ; 0) to examine the acoustic-phonetic differences between IDS and child-directed speech (CDS). CDS exhibits an exaggeration pattern resembling that of IDS - expanded vowel space, longer vowels, higher pitch and greater lexical tone differences - when compared to ADS. Longitudinal analysis demonstrated that the extent of acoustic exaggeration is significantly smaller in CDS than in IDS. Age-related changes in maternal speech provide some support for the hypothesis that mothers adjust their speech directed toward children as a function of the child's language ability.
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journal article
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