Personality and facial morphology: links to assertiveness and neuroticism in capuchins (Sapajus [Cebus] apella)

Wilson, V., Lefevre, C.E., Morton, F.B., Brosnan, S.F., Paukner, A. ORCID: 0000-0002-3421-1864 and Bates, T.C., 2014. Personality and facial morphology: links to assertiveness and neuroticism in capuchins (Sapajus [Cebus] apella). Personality and Individual Differences, 58, pp. 89-94. ISSN 0191-8869

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Abstract

Personality has important links to health, social status, and life history outcomes (e.g. longevity and reproductive success). Human facial morphology appears to signal aspects of one’s personality to others, raising questions about the evolutionary origins of such associations (e.g. signals of mate quality). Studies in non-human primates may help to achieve this goal: for instance, facial width-to-height ratio (fWHR) in the male face has been associated with dominance not only in humans but also in capuchin monkeys. Here we test the association of personality (assertiveness, openness, attentiveness, neuroticism, and sociability) with fWHR, face width/lower-face height, and lower face/face height ratio in 64 capuchins (Sapajus apella). In a structural model of personality and facial metrics, fWHR was associated with assertiveness, while lower face/face height ratio was associated with neuroticism (erratic vs. stable behaviour) and attentiveness (helpfulness vs. distractibility). Facial morphology thus appears to associate with three personality domains, which may act as a signal of status in capuchins.

Item Type: Journal article
Publication Title: Personality and Individual Differences
Creators: Wilson, V., Lefevre, C.E., Morton, F.B., Brosnan, S.F., Paukner, A. and Bates, T.C.
Publisher: Pergamon Press
Date: 1 February 2014
Volume: 58
ISSN: 0191-8869
Identifiers:
NumberType
10.1016/j.paid.2013.10.008DOI
S0191886913013214Publisher Item Identifier
Divisions: Schools > School of Social Sciences
Depositing User: Jonathan Gallacher
Date Added: 25 Jan 2019 09:44
Last Modified: 29 Jul 2019 13:45
URI: http://irep.ntu.ac.uk/id/eprint/35686

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