Affective matching of odors and facial expressions in infants: shifting patterns between 3 and 7 months

Developmental Science
Ornella GodardKarine Durand

Abstract

Recognition of emotional facial expressions is a crucial skill for adaptive behavior. Past research suggests that at 5 to 7 months of age, infants look longer to an unfamiliar dynamic angry/happy face which emotionally matches a vocal expression. This suggests that they can match stimulations of distinct modalities on their emotional content. In the present study, olfaction-vision matching abilities were assessed across different age groups (3, 5 and 7 months) using dynamic expressive faces (happy vs. disgusted) and distinct hedonic odor contexts (pleasant, unpleasant and control) in a visual-preference paradigm. At all ages the infants were biased toward the disgust faces. This visual bias reversed into a bias for smiling faces in the context of the pleasant odor context in the 3-month-old infants. In infants aged 5 and 7 months, no effect of the odor context appeared in the present conditions. This study highlights the role of the olfactory context in the modulation of visual behavior toward expressive faces in infants. The influence of olfaction took the form of a contingency effect in 3-month-old infants, but later evolved to vanish or to take another form that could not be evidenced in the present study.

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Citations

Oct 19, 2016·Developmental Psychobiology·Kimberly Cuevas, Amy Giles
Jun 9, 2019·Developmental Science·Arnaud LeleuJean-Yves Baudouin
Aug 5, 2020·Infancy : the Official Journal of the International Society on Infant Studies·Karine DurandJean-Yves Baudouin
Dec 12, 2018·Frontiers in Psychology·Andrea Sorcinelli, Athena Vouloumanos
May 19, 2021·Proceedings of the National Academy of Sciences of the United States of America·Diane RekowArnaud Leleu
Jul 22, 2021·Infancy : the Official Journal of the International Society on Infant Studies·Jonathan E PruntyDavid J Kelly
Oct 12, 2021·Developmental Science·Jonathan E PruntyDavid J Kelly

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