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Facial Width-to-Height Ratio as a Cue of Threat: An Initial Event-Related Potential Study
University West, Department of Social and Behavioural Studies, Division of Psychology, Pedagogy and Sociology. University of Skovde, Department of Cognitive Neuroscience, Skovde (SWE).ORCID iD: 0000-0003-0629-353X
University of Skovde, Department of Cognitive Neuroscience, Skovde (SWE).
2020 (English)In: International Journal of Psychological and Brain Sciences, ISSN 2575-1573, Vol. 5, no 1, p. 1-4Article in journal (Other academic) Published
Abstract [en]

The background for the present study is that facial width-to-height ratio (fWHR) is suggested to function as an evolutionary cue for threatening behavior such as perceived aggression. With a novel approach, in this pilot study, we explored whether fWHR can be detected in observers brain responses measured by event-related potentials (ERP), specifically, the Late Positive Potential (LPP) component (400-3000ms after stimuli onset). The hypothesis was that faces with a high fWHR would elicit a larger LPP amplitude than faces with a low fWHR. The results showed that faces with high fWHRs were indeed perceived as more aggressive and elicited significantly greater LPP amplitudes. The conclusion lends initial support to fWHR serving as a facial cue with evolutionary relevance. We caution that future full-length studies need to take the current small-scale study's limitations into consideration.

Place, publisher, year, edition, pages
SciencePG , 2020. Vol. 5, no 1, p. 1-4
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Neurosciences
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URN: urn:nbn:se:hv:diva-15011DOI: 10.11648/j.ijpbs.20200501.11OAI: oai:DiVA.org:hv-15011DiVA, id: diva2:1395729
Available from: 2020-02-24 Created: 2020-02-24 Last updated: 2024-04-25

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Kajonius, Petri

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