Friendship and partner choice in rural Colombia

Redhead, Daniel; Ragione, Augusto Dalla; Ross, Cody T.

doi:10.1016/j.evolhumbehav.2022.08.004

Cited by 11 publications

(17 citation statements)

References 108 publications

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“…Given the egalitarian norms and practices among BaYaka, these findings are potentially surprising, as one might predict greater food sharing and redistribution from higher to lower status individuals, rather than status‐based homophily. However, the observed status homophily is consistent with past cross‐sectional work showing that higher status individuals or households preferentially cooperate with one another among Inuit village residents in western Canada (Ready & Power, 2018) and rural Colombian communities (Redhead, Dalla Ragione, & Ross, 2022). This may help individuals maintain status, as status in such contexts may be closely linked to the perceived ability and willingness to share costly resources (Ready & Power, 2018; Redhead & Power, 2022; von Rueden et al, 2019).…”

Section: Discussionsupporting

confidence: 88%

“…Sharing (in)), along with the food sharing network inferred by our latent network model. Our network follows typical characteristics of previously observed food sharing networks (e.g., Nolin, 2010;Ready & Power, 2018;Redhead, Dalla Ragione, & Ross, 2022;von Rueden et al, 2019). Our networks were relatively sparse, with around 763 ties being inferred, which is around 6% of all potential ties.…”

Section: Resultssupporting

confidence: 52%

“…showing that higher status individuals or households preferentially cooperate with one another among Inuit village residents in western Canada (Ready & Power, 2018) and rural Colombian communities (Redhead, Dalla Ragione, & Ross, 2022). This may help individuals maintain status, as status in such contexts may be closely linked to the perceived ability and willingness to share costly resources (Ready & Power, 2018;Redhead & Power, 2022;von Rueden et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

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BaYaka forager food sharing networks in the Congo Basin: The roles of gender homophily and kin sharing

Gettler

Redhead

Dzabatou

et al. 2023

American Journal of Biological Anthropology

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Objectives Food sharing is a costly form of cooperation that was likely critical to human evolutionary success, including the emergence of human's life history strategy. Food sharing in human communities may be maintained through a number of pathways, including direct dyadic reciprocity, reputation‐based processes, and kin‐biased exchange. Differences in reproductive demands, labor, and cultural norms may also result in gendered differences in cooperative networks. Here, we examine cooperative networks in egalitarian BaYaka foragers from the Congo Basin. Materials and Methods We collected social network data from 112 adults in 41 households in this subsistence community. We implement a Bayesian latent network model to assess individual‐, dyadic‐, and block‐level predictors of food sharing partners. Results Conditioning on covariates, we found limited evidence for direct dyadic reciprocity in food sharing. Despite local norms regarding prestige avoidance, we found status‐based homophily. High‐status individuals—council members and local healers—were more likely to share with one another. Importantly, our results highlight gender differences in patterns of food sharing, interacting with genetic relatedness. Women were more likely to share with one another, especially with kin as genetic relatedness increased. Discussion Our results align with evolutionary framing emphasizing kin selection in costly cooperation. The results showing that women cooperate with other women, particularly kin, also complement sex‐based patterns in some other mammalian species, potentially reflecting the social support necessary to manage reproductive costs and childcare. BaYaka women's subsistence productivity and local cultural dynamics for autonomy and egalitarianism may likewise help facilitate women's preferential cooperation with one another.

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Section: Discussionsupporting

confidence: 88%

Section: Resultssupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

BaYaka forager food sharing networks in the Congo Basin: The roles of gender homophily and kin sharing

Gettler

Redhead

Dzabatou

et al. 2023

American Journal of Biological Anthropology

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“…wealth homophily), as such relationships would be considered mutually beneficial (e.g. with higher chances of reciprocity), and this assortment by material wealth could increase material wealth inequality [19][20][21][22]. Antithetically, other types of relationships could preferentially form between individuals without considerations of material wealth-or between individuals of different wealth-and could act to reduce differences in wealth [20,23,24].…”

Section: Introductionmentioning

confidence: 99%

The interdependence of relational and material wealth inequality in Pemba, Zanzibar

Redhead

Maliti²,

Andrews

et al. 2023

Phil. Trans. R. Soc. B

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The extent of inequality in material wealth across different types of societies is well established. Less clear, however, is how material wealth is associated with relational wealth, and the implications of such associations for material wealth inequality. Theory and evidence suggest that material wealth both guides, and is patterned by, relational wealth. While existing comparative studies typically assume complementarity between different types of wealth, such associations may differ for distinct kinds of relational wealth. Here, we first review the literature to identify how and why different forms of relational wealth may align. We then turn to an analysis of household-level social networks (food sharing, gender-specific friendship and gender-specific co-working networks) and material wealth data from a rural community in Pemba, Zanzibar. We find that (i) the materially wealthy have most relational ties, (ii) the associations between relational and material wealth—as well as relational wealth more generally—are patterned by gender differences, and (iii) different forms of relational wealth have similar structural properties and are closely aligned. More broadly, we show how examining the patterning of distinct types of relational wealth provides insights into how and why inequality in material wealth remains muted in a community undergoing rapid economic change. This article is part of the theme issue ‘Evolutionary ecology of inequality’.

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“…Therefore, to compare overall levels of cooperation which are not confounded by constraining children to certain partners, as well as to explore who children share with and whether this changes with age, incorporating partner choice into experimental designs is necessary. While experimental designs which incorporate partner choice are increasingly employed among adults [26,[39][40][41][42], there are few studies applying such methods with children, especially in small-scale societies.…”

Section: Introductionmentioning

confidence: 99%

Cooperation and partner choice among Agta hunter-gatherer children: An evolutionary developmental perspective

et al. 2023

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Examining development is essential for a full understanding of behaviour, including how individuals acquire traits and how adaptive evolutionary forces shape these processes. The present study explores the development of cooperative behaviour among the Agta, a Filipino hunter-gatherer population. A simple resource allocation game assessing both levels of cooperation (how much children shared) and patterns of partner choice (who they shared with) was played with 179 children between the ages of 3 and 18. Children were given five resources (candies) and for each was asked whether to keep it for themselves or share with someone else, and if so, who this was. Between-camp variation in children’s cooperative behaviour was substantial, and the only strong predictor of children’s cooperation was the average level of cooperation among adults in camp; that is, children were more cooperative in camps where adults were more cooperative. Neither age, sex, relatedness or parental levels of cooperation were strongly associated with the amount children shared. Children preferentially shared with close kin (especially siblings), although older children increasingly shared with less-related individuals. Findings are discussed in terms of their implications for understanding cross-cultural patterns of children’s cooperation, and broader links with human cooperative childcare and life history evolution.

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Friendship and partner choice in rural Colombia

Cited by 11 publications

References 108 publications

BaYaka forager food sharing networks in the Congo Basin: The roles of gender homophily and kin sharing

BaYaka forager food sharing networks in the Congo Basin: The roles of gender homophily and kin sharing

The interdependence of relational and material wealth inequality in Pemba, Zanzibar

Cooperation and partner choice among Agta hunter-gatherer children: An evolutionary developmental perspective

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