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Acceptance of lexical overlap by monolingual and bilingual toddlers
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Sensitivity to amplitude envelope rise time in infancy and vocabulary development at three years : a significant relationship
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Infant-directed speech facilitates seven-month-old infants' cortical tracking of speech
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Constraints on tone sensitivity in novel word learning by monolingual and bilingual infants : tone properties are more influential than tone familiarity
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The development of fast‐mapping and novel word retention strategies in monolingual and bilingual infants
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The origins of babytalk : smiling, teaching or social convergence?
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Abstract:
When addressing their young infants, parents systematically modify their speech. Such infant-directed speech (IDS) contains exaggerated vowel formants, which have been proposed to foster language development via articulation of more distinct speech sounds. Here, this assumption is rigorously tested using both acoustic and, for the first time, fine-grained articulatory measures. Mothers were recorded speaking to their infant and to another adult, and measures were taken of their acoustic vowel space, their tongue and lip movements and the length of their vocal tract. Results showed that infantbut not adult-directed speech contains acoustically exaggerated vowels, and these are not the product of adjustments to tongue or to lip movements. Rather, they are the product of a shortened vocal tract due to a raised larynx, which can be ascribed to speakers’ unconscious effort to appear smaller and more non-threatening to the young infant. This adjustment in IDS may be a vestige of early mother-infant interactions, which had as its primary purpose the transmission of non-aggressiveness and/or a primitive manifestation of prelinguistic vocal social convergence of the mother to her infant. With the advent of human language, this vestige then acquired a secondary purpose-facilitating language acquisition via the serendipitously exaggerated vowels.
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Keyword:
English language; language acquisition; parent and infant; speech perception; vowels; XXXXXX - Unknown
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URL: https://doi.org/10.1098/rsos.170306 http://handle.westernsydney.edu.au:8081/1959.7/uws:43727
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9 |
Is it a name or a fact? : disambiguation of reference via exclusivity and pragmatic reasoning
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OZI : Australian English communicative development inventory
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Novel word learning, reading difficulties, and phonological processing skills
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Mutual exclusivity develops as a consequence of abstract rather than particular vocabulary knowledge
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The effects of linguistic experience on the flexible use of mutual exclusivity in word learning
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