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Immune function during early adolescence positively predicts adult facial sexual dimorphism in both men and women

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ZhiFoo_2020_EHB_Immunefunction_AAM.pdf (778.1Kb)
Date
17/02/2020
Author
Foo, Yong Zhi
Simmons, Leigh W.
Perrett, David Ian
Holt, Patrick
Eastwood, Peter R.
Rhodes, Gillian
Keywords
Sexual dimorphism
Immunocompetence handicap hypothesis
Facial attractiveness
BF Psychology
3rd-DAS
SDG 3 - Good Health and Well-being
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Abstract
Evolutionary theories suggest that humans prefer sexual dimorphism in faces because masculinity in men and femininity in women may be an indicator of immune function during development. In particular, the immunocompetence handicap hypothesis proposes that sexual dimorphism indicates good immune function during development because the sex hormones, particularly testosterone in men, required for the development of sexually dimorphic facial features also taxes the immune system. Therefore, only healthy males can afford the high level of testosterone for the development of sexually dimorphic traits without compromising their survival. Researchers have suggested that a similar mechanism via the effects of oestrogen might also explain male preferences for female femininity. Despite the prominence of the immunocompetence handicap hypothesis, no studies have tested whether immune function during development predicts adult facial sexual dimorphism. Here, using data from a longitudinal public health dataset, the Western Australian Pregnancy Cohort (Raine) Study (Generation 2), we show that some aspects of immune function during early adolescence (14 years) positively predict sexually dimorphic 3D face shape in both men and women. Our results support a fundamental assumption that facial sexual dimorphism is an indicator of immune function during the development of facial sexual dimorphism.
Citation
Foo , Y Z , Simmons , L W , Perrett , D I , Holt , P , Eastwood , P R & Rhodes , G 2020 , ' Immune function during early adolescence positively predicts adult facial sexual dimorphism in both men and women ' , Evolution and Human Behavior , vol. In press . https://doi.org/10.1016/j.evolhumbehav.2020.02.002
Publication
Evolution and Human Behavior
Status
Peer reviewed
DOI
https://doi.org/10.1016/j.evolhumbehav.2020.02.002
ISSN
1090-5138
Type
Journal article
Rights
Copyright © 2020 Published by Elsevier Inc. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1016/j.evolhumbehav.2020.02.002
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/21438

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