Infant-Directed Speech from Seven to Nineteen Months Has Similar Acoustic Properties but Different Functions

Autor/inn/en	Kalashnikova, Marina; Burnham, Denis
Titel	Infant-Directed Speech from Seven to Nineteen Months Has Similar Acoustic Properties but Different Functions
Quelle	In: Journal of Child Language, 45 (2018) 5, S.1035-1053 (19 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0305-0009
Schlagwörter	Infants; Acoustics; Phonology; Language Acquisition; Longitudinal Studies; Speech Communication; Mothers; Parent Child Relationship; Vowels; Vocabulary Development; Articulation (Speech); Age Differences; Adults + Suchen Sie Ihr Suchwort? Infant; Toddler; Toddlers; Kleinkind; Akustik; Fonologie; Sprachaneignung; Spracherwerb; Longitudinal study; Longitudinal method; Longitudinal methods; Längsschnittuntersuchung; Mother; Mutter; Parents-child relationship; Parent-child-relation; Parent-child relationship; Eltern-Kind-Beziehung; Wortschatzarbeit; Age; Difference; Age difference; Altersunterschied
Abstract	This longitudinal study assessed three acoustic components of maternal infant-directed speech (IDS) -- pitch, affect, and vowel hyperarticulation -- in relation to infants' age and their expressive vocabulary size. These three individual components were measured in IDS addressed to infants at 7, 9, 11, 15, and 19 months (N = 18). All three components were exaggerated at all ages in mothers' IDS compared to their adult-directed speech. Importantly, the only signifcant predictor of infants' expressive vocabulary size at 15 and 19 months was vowel hyperarticulation, but only at 9 months and beyond, not at 7 months, and not pitch or affect at any age. These results set apart vowel hyperarticulation in IDS to infants as the critical IDS component for vocabulary development. Thus IDS, specifcally the degree of vowel hyperarticulation therein, is a vehicle by which parents can provide the most optimal speech quality for their infants' linguistic and communicative development. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01