Does the primate face cue personality?

Wilson, Vanessa A.D.; Masilkova, Michaela

Abstract

When looking at others, primates primarily focus on the face - detecting the face first and looking at it longer than other parts of the body. This is because primate faces, even without expression, convey trait information crucial for navigating social relationships. Recent studies on primates, including humans, have linked facial features, specifically facial width-to-height ratio (fWHR), to rank and Dominance-related personality traits, suggesting these links' potential role in social decisions. However, studies on the association between dominance and fWHR report contradictory results in humans and variable patterns in nonhuman primates. It is also not clear whether and how nonhuman primates perceive different facial cues to personality traits and whether these may have evolved as social signals. This review summarises the variable facial-personality links, their underlying proximate and evolutionary mechanisms and their perception across primates. We emphasise the importance of employing comparative research, including various primate species and human populations, to disentangle phylogeny from socio-ecological drivers and to understand the selection pressures driving the facial-personality links in humans. Finally, we encourage researchers to move away from single facial measures and towards holistic measures and to complement perception studies using neuroscientific methods.

Citation

Wilson, V. A., & Masilkova, M. (2023). Does the primate face cue personality?. Personality Neuroscience, 6, Article e7. https://doi.org/10.1017/pen.2023.5

• Journal Article Type: Article
• Acceptance Date: May 31, 2023
• Online Publication Date: Aug 9, 2023
• Publication Date: 2023
• Deposit Date: Sep 19, 2024
• Publicly Available Date: Sep 24, 2024
• Journal: Personality Neuroscience
• Electronic ISSN: 2513-9886
• Publisher: Cambridge University Press
• Peer Reviewed: Peer Reviewed
• Volume: 6
• Article Number: e7
• DOI: https://doi.org/10.1017/pen.2023.5
• Keywords: fWHR; Dominance; Rank; Evolution; Social signal; Sexual selection; Perception
• Public URL: https://hull-repository.worktribe.com/output/4832232