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Effect of infant bilingualism on audiovisual integration in a McGurk task

Mercure, Evelyne; Bright, Peter; Quiroz, Isabel; Filippi, Roberto; (2022) Effect of infant bilingualism on audiovisual integration in a McGurk task. Journal of Experimental Child Psychology , 217 , Article 105351. 10.1016/j.jecp.2021.105351. Green open access

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Abstract

Infants growing up in an environment where more than one language is spoken tend to follow the early milestones of early language development. This is an impressive achievement given that they are learning two languages while receiving reduced exposure to each of these languages compared with monolingual infants. This increased variability in their linguistic environment may lead to adjustments in the way bilingual infants process visual and auditory speech. This study aimed to clarify the influence of infant bilingualism on the development of audiovisual speech integration. Using eye tracking and a McGurk paradigm, we studied face scanning patterns when 7- to 10-month-old infants were viewing articulation of audiovisually congruent and incongruent syllables. We found that monolingual infants decreased their attention to the mouth and increased their attention to the eyes of speaking faces when presented with incongruent articulation, typically leading to the McGurk illusion during adulthood. In bilingual infants, no differences in face scanning patterns were observed between audiovisually congruent and incongruent articulation, suggesting that the increased variability in their speech experience may lead to more tolerance to articulatory inconsistencies. These results suggest that the development of audiovisual speech perception is influenced by infants’ language environment.

Type: Article
Title: Effect of infant bilingualism on audiovisual integration in a McGurk task
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.jecp.2021.105351
Publisher version: https://doi.org/10.1016/j.jecp.2021.105351
Language: English
Additional information: © 2022 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Bilingual, Speech, Multisensory, Audiovisual, Language development, McGurk
UCL classification: UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education > IOE - Psychology and Human Development
UCL > Provost and Vice Provost Offices > School of Education
UCL
URI: https://discovery-pp.ucl.ac.uk/id/eprint/10142649
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