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The redeployment of attention to the mouth of a talking face during the second year of life
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Abstract:
Previous studies have found that when monolingual infants are exposed to a talking face speaking in a native language, 8- to 10-month-olds attend more to the talker’s mouth, whereas 12-month-olds no longer do so. It has been hypothesized that the attentional focus on the talker’s mouth at 8–10 months of age reflects reliance on the highly salient audiovisual (AV) speech cues for the acquisition of basic speech forms and that the subsequent decline of attention to the mouth by 12 months of age reflects the emergence of basic native speech expertise. Here, we investigated whether infants may redeploy their attention to the mouth once they fully enter the word-learning phase. To test this possibility, we recorded eye gaze in monolingual English-learning 14- and 18-month-olds while they saw and heard a talker producing an English or Spanish monologue in either an infant-directed (ID) or adult-directed (AD) manner. Results indicated that the 14- month-olds attended more to the talker’s mouth than to the eyes when exposed to the ID utterance, whereas the 18-month-olds attended more to the talker’s mouth when exposed to both the ID and AD utterances. These results show that infants redeploy their attention to a talker’s mouth when they enter the word acquisition phase and suggest that infants rely on the greater perceptual salience of the redundant AV speech cues to acquire their lexicon.
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Keyword:
Article
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URL: http://www.ncbi.nlm.nih.gov/pubmed/29627481 https://doi.org/10.1016/j.jecp.2018.03.009 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5920681/
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Selective Attention to a Talker’s Mouth in Infancy: Role of Audiovisual Temporal Synchrony and Linguistic Experience
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Bilingualism Modulates Infants' Selective Attention to the Mouth of a Talking Face
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Perception of the Multisensory Coherence of Fluent Audiovisual Speech in Infancy: Its Emergence & the Role of Experience
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The Audio-Visual Temporal Binding Window Narrows In Early Childhood
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Perception of audio-visual speech synchrony in Spanish-speaking children with and without specific language impairment
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Infants deploy selective attention to the mouth of a talking face when learning speech
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Perception of audio-visual speech synchrony in Spanish-speaking children with and without specific language impairment
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The effect of face-voice synchrony on infant allocation of visual attention
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Semantic confusion regarding the development of multisensory integration: a practical solution
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