Age-related changes in acoustic modifications of Mandarin maternal speech to preverbal infants and five-year-old children: a longitudinal study*

ABSTRACT Acoustic-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.

[1]  P. Kuhl,et al.  Phonetic learning as a pathway to language: new data and native language magnet theory expanded (NLM-e) , 2008, Philosophical Transactions of the Royal Society B: Biological Sciences.

[2]  A. Fernald,et al.  Expanded Intonation Contours in Mothers' Speech to Newborns. , 1984 .

[3]  P. Kuhl,et al.  Maternal speech to infants in a tonal language: Support for universal prosodic features in motherese. , 1988 .

[4]  D. Stern,et al.  The prosody of maternal speech: infant age and context related changes , 1983, Journal of Child Language.

[5]  C. A. Ferguson,et al.  Talking to Children: Language Input and Acquisition , 1979 .

[6]  D. Burnham,et al.  Universality and specificity in infant-directed speech: Pitch modifications as a function of infant age and sex in a tonal and non-tonal language , 2001 .

[7]  Jeanne M. Johnson,et al.  Fine-tuning of utterance length to preverbal infants: effects on later language development , 1990, Journal of Child Language.

[8]  David B. Pisoni,et al.  Intelligibility of normal speech I: Global and fine-grained acoustic-phonetic talker characteristics , 1996, Speech Commun..

[9]  Patricia K. Kuhl,et al.  Fast Track , 2020, Electric and Hybrid Vehicle Technology International.

[10]  P. Kuhl,et al.  Early Speech Perception and Later Language Development: Implications for the "Critical Period" , 2005 .

[11]  A. Pomerleau,et al.  Relations between lexical-temporal features in mothers' speech and infants' interactive behaviours , 1996 .

[12]  D. Burnham,et al.  Pitch and Communicative Intent in Mother's Speech: Adjustments for Age and Sex in the First Year , 2003 .

[13]  Tomohiro Nakatani,et al.  Fundamental frequency of infants' and parents' utterances in longitudinal recordings. , 2006, The Journal of the Acoustical Society of America.

[14]  Catherine E. Snow,et al.  Input and interaction in language acquisition: Beginning from Baby Talk: twenty years of research on input in interaction , 1994 .

[15]  D. Burnham,et al.  What's New, Pussycat? On Talking to Babies and Animals , 2002, Science.

[16]  P. Kuhl,et al.  Cross-language analysis of phonetic units in language addressed to infants. , 1997, Science.

[17]  J. Bohannon,et al.  Intonation Patterns in Child-Directed Speech: Mother-Father Differences. , 1984 .

[18]  Jane L. Abraham,et al.  The development of infants' preference for motherese , 1997 .

[19]  P. Kuhl,et al.  Speech perception in infancy predicts language development in the second year of life: a longitudinal study. , 2004, Child development.

[20]  H. Gleitman,et al.  Mother, Id rather do it myself: Some effects and non-effects of maternal speech style , 1977 .

[21]  G. Weismer,et al.  The influence of speaking rate on vowel space and speech intelligibility for individuals with amyotrophic lateral sclerosis. , 1995, Journal of speech and hearing research.

[22]  Brian Richards,et al.  Input and interaction in language acquisition: Types of language learner , 1994 .

[23]  P. Kuhl,et al.  Acoustic analysis of lexical tone in Mandarin infant-directed speech. , 2007, Developmental psychology.

[24]  N I Durlach,et al.  Speaking clearly for the hard of hearing. III: An attempt to determine the contribution of speaking rate to differences in intelligibility between clear and conversational speech. , 1989, Journal of speech and hearing research.

[25]  R A Harshman,et al.  Crosslanguage Differences in Tone Perception: a Multidimensional Scaling Investigation , 1978, Language and speech.

[26]  B. Dodd,et al.  The phonological acquisition of Putonghua (Modern Standard Chinese) , 2000, Journal of Child Language.

[27]  R. D. Kavanaugh,et al.  Parental Speech to Young Children: A Longitudinal Analysis. , 1982 .