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Preferential lookin...
Preferential looking to eyes versus mouth in early infancy : heritability and link to concurrent and later development
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- Viktorsson, Charlotte (författare)
- Uppsala universitet,Institutionen för psykologi
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Portugal, Ana Maria (författare)
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Li, Danyang (författare)
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- Rudling, Maja (författare)
- Uppsala universitet,Institutionen för psykologi
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Siqueiros Sanchez, Monica (författare)
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- Tammimies, Kristiina (författare)
- Karolinska Institutet
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- Taylor, Mark J. (författare)
- Karolinska Institutet
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Ronald, Angelica (författare)
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- Falck-Ytter, Terje, Professor, 1979- (författare)
- Karolinska Institutet,Uppsala universitet,Institutionen för psykologi,Kollegiet för avancerade studier (SCAS),Division of Neuropsychiatry, Department of Women's and Children's Health, Center of Neurodevelopmental Disorders (KIND), Karolinska Institutet, Stockholm, Sweden
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(creator_code:org_t)
- 2022-11-25
- 2023
- Engelska.
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Ingår i: Journal of Child Psychology and Psychiatry. - : John Wiley & Sons. - 0021-9630 .- 1469-7610. ; 64:2, s. 311-319
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https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- BackgroundFrom birth, infants orient preferentially to faces, and when looking at the face, they attend primarily to eyes and mouth. These areas convey different types of information, and earlier research suggests that genetic factors influence the preference for one or the other in young children. MethodsIn a sample of 535 5-month-old infant twins, we assessed eye (relative to mouth) preference in early infancy, i.e., before neural systems for social communication and language are fully developed. We investigated the contribution of genetic and environmental factors to the preference for looking at eyes, and the association with concurrent traits and follow-up measures. ResultsEye preference was independent from all other concurrent traits measured, and had a moderate-to-high contribution from genetic influences (A = 0.57; 95% CI: 0.45, 0.66). Preference for eyes at 5 months was associated with higher parent ratings of receptive vocabulary at 14 months. No statistically significant association with later autistic traits was found. Preference for eyes was strikingly stable across different stimulus types (e.g., dynamic vs. still), suggesting that infants' preference at this age does not reflect sensitivity to low-level visual cues. ConclusionsThese results suggest that individual differences in infants' preferential looking to eyes versus mouth to a substantial degree reflect genetic variation. The findings provide new leads on both the perceptual basis and the developmental consequences of these attentional biases.
Ämnesord
- SAMHÄLLSVETENSKAP -- Psykologi -- Psykologi (hsv//swe)
- SOCIAL SCIENCES -- Psychology -- Psychology (hsv//eng)
Nyckelord
- Twin design
- visual attention
- eye-mouth index
- language comprehension
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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