Individual differences in infants’ neural responses to their peers’ cry and laughter

Crespo-Llado, Maria Magdalena and Vanderwert, Ross E. and Geangu, Elena (2018) Individual differences in infants’ neural responses to their peers’ cry and laughter. Biological Psychology, 135. pp. 117-127. ISSN 0301-0511

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Abstract Infants’ ability to process others’ emotional expressions is fundamental for their social development. While infants’ processing of emotions expressed by faces and speech has been more extensively investigated, less is known about how infants process non-verbal vocalizations of emotions. Here, we recorded frontal N100, P200, and LPC event-related potentials (ERPs) from 8-month-old infants listening to sounds of other infants crying, laughing, and coughing. Infants’ temperament was measured via parental report. Results showed that processing of emotional information from non-verbal vocalizations was associated with more negative N100 and greater LPC amplitudes for peer’s crying sounds relative to positive and neutral sounds. Temperament was further related to the N100, P200, and LPC difference scores between conditions. One important finding was that infants with improved ability to regulate arousal exhibited increased sustained processing of peers’ cry sounds compared to both laughter and cough sounds. These results emphasize the relevance of considering the temperamental characteristics in understanding the development of infant emotion information processing, as well as for formulating comprehensive theoretical models of typical and atypical social development.

Item Type:
Journal Article
Journal or Publication Title:
Biological Psychology
Additional Information:
This is the author’s version of a work that was accepted for publication in Biological Psychology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Biological Psychology, 135, 2018 DOI: 10.1016/j.biopsycho.2018.03.008
Uncontrolled Keywords:
?? infantsemotionnon-verbal vocalizationstemperamenterpneuropsychology and physiological psychologyneuroscience(all) ??
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Deposited On:
28 Mar 2018 12:46
Last Modified:
15 Jan 2024 00:14