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Language experience influences audiovisual speech integration in unimodal and bimodal bilingual infants
- Source :
- Developmental Science
- Publication Year :
- 2018
- Publisher :
- John Wiley and Sons Inc., 2018.
-
Abstract
- Infants as young as 2 months can integrate audio and visual aspects of speech articulation. A shift of attention from the eyes towards the mouth of talking faces occurs around 6 months of age in monolingual infants. However, it is unknown whether this pattern of attention during audiovisual speech processing is influenced by speech and language experience in infancy. The present study investigated this question by analysing audiovisual speech processing in three groups of 4‐ to 8‐month‐old infants who differed in their language experience: monolinguals, unimodal bilinguals (infants exposed to two or more spoken languages) and bimodal bilinguals (hearing infants with Deaf mothers). Eye‐tracking was used to study patterns of face scanning while infants were viewing faces articulating syllables with congruent, incongruent and silent auditory tracks. Monolinguals and unimodal bilinguals increased their attention to the mouth of talking faces between 4 and 8 months, while bimodal bilinguals did not show any age difference in their scanning patterns. Moreover, older (6.6 to 8 months), but not younger, monolinguals (4 to 6.5 months) showed increased visual attention to the mouth of faces articulating audiovisually incongruent rather than congruent faces, indicating surprise or novelty. In contrast, no audiovisual congruency effect was found in unimodal or bimodal bilinguals. Results suggest that speech and language experience influences audiovisual integration in infancy. Specifically, reduced or more variable experience of audiovisual speech from the primary caregiver may lead to less sensitivity to the integration of audio and visual cues of speech articulation.
- Subjects :
- Paper
Adult
Male
medicine.medical_specialty
Visual perception
Eye Movements
Cognitive Neuroscience
Multilingualism
Audiology
Sign language
050105 experimental psychology
psyc
Developmental and Educational Psychology
medicine
Humans
0501 psychology and cognitive sciences
Attention
10. No inequality
Sensory cue
Neuroscience of multilingualism
Mouth
05 social sciences
Novelty
Infant
Manner of articulation
Face
Papers
Speech Perception
Visual Perception
Female
Cues
Psychology
Language Experience Approach
050104 developmental & child psychology
Subjects
Details
- Language :
- English
- ISSN :
- 14677687 and 1363755X
- Volume :
- 22
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Developmental Science
- Accession number :
- edsair.doi.dedup.....4811e65fad860d311e1b9e7a5eb4de7f