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Testing adaptive hypotheses of alloparenting in Agta foragers

Page, AE; Thomas, MG; Smith, D; Dyble, M; Viguier, S; Chaudhary, N; Salali, GD; ... Migliano, AB; + view all (2019) Testing adaptive hypotheses of alloparenting in Agta foragers. Nature Human Behaviour , 3 pp. 1154-1163. 10.1038/s41562-019-0679-2. Green open access

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Abstract

Human children are frequently cared for by non-parental caregivers (alloparents), yet few studies have conducted systematic alternative hypothesis tests of why alloparents help. Here we explore whether predictions from kin selection, reciprocity, learning-to-mother and costly signalling hypotheses explain non-parental childcare among Agta hunter-gatherers from the Philippines. To test these hypotheses, we used high-resolution proximity data from 1,701 child–alloparent dyads. Our results indicated that reciprocity and relatedness were positively associated with the number of interactions with a child (our proxy for childcare). Need appeared more influential in close kin, suggesting indirect benefits, while reciprocity proved to be a stronger influence in non-kin, pointing to direct benefits. However, despite shared genes, close and distant kin interactions were also contingent on reciprocity. Compared with other apes, humans are unique in rapidly producing energetically demanding offspring. Our results suggest that the support that mothers require is met through support based on kinship and reciprocity.

Type: Article
Title: Testing adaptive hypotheses of alloparenting in Agta foragers
Open access status: An open access version is available from UCL Discovery
DOI: 10.1038/s41562-019-0679-2
Publisher version: https://doi.org/10.1038/s41562-019-0679-2
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Anthropology, Evolution, Zoology
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Anthropology
URI: https://discovery.ucl.ac.uk/id/eprint/10088906
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