Maternal care predicts facial expression processing in macaques

O'Callaghan, O, Whitehouse, J ORCID: https://orcid.org/0000-0003-2607-5492, Paukner, A ORCID: https://orcid.org/0000-0002-3421-1864, Witham, CL and Waller, BM ORCID: https://orcid.org/0000-0001-6303-7458, 2025. Maternal care predicts facial expression processing in macaques. iScience. ISSN 2589-0042

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Abstract

Facial expressions are common across mammals and are essential for social communication. In humans, a rich early social environment is important for the appropriate development of facial expression processing. Whether other animals are similarly reliant on social input for facial expression development, or have a more fixed system, is unknown. Here, we investigated how maternal care influences facial expression processing skills in rhesus macaques (Macaca mulatta). We conducted three experiments quantifying facial expression processing and examined performance in relation to historical maternal data and across age. Facial expression processing skill was predicted by positive social contact with the mother during infancy and increased with age until adulthood. Our findings provide the first evidence that early social input, specifically maternal care, enhances facial expression processing skills in non-human animals. This challenges the notion that facial expression processing systems are entirely hard-wired and innate and emphasizes the importance of flexibility and responsiveness to local conditions.

Item Type:	Journal article
Publication Title:	iScience
Creators:	O'Callaghan, O., Whitehouse, J., Paukner, A., Witham, C.L. and Waller, B.M.
Publisher:	Elsevier (Cell Press)
Date:	25 March 2025
ISSN:	2589-0042
Identifiers:	Number Type 10.1016/j.isci.2025.112179 DOI 2416479 Other
Rights:	© 2025 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Divisions:	Schools > School of Social Sciences
Record created by:	Laura Borcherds
Date Added:	28 Mar 2025 11:31
Last Modified:	28 Mar 2025 11:31
URI:	https://irep.ntu.ac.uk/id/eprint/53317

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