Trade-offs in primate grooming reciprocation: testing behavioural flexibility and correlated evolution
Gabriele Schino,Filippo Aureli +1 more
TLDR
Within-species evidence is found that steeper dominance hierarchies were associated with more grooming being directed up the hierarchy, and that a trade-off occurred between the tendency to groom up the hierarchies and the degree of grooming reciprocation.Abstract:
Primates may trade altruistic behaviours, such as grooming, either for itself or for different rank-related benefits, such as tolerance or agonistic support. Ecological conditions are expected to affect competition and thus the steepness of dominance hierarchies. This, in turn, may influence the value of the different currencies that primates exchange. Thus, it can be hypothesized that, as the dominance hierarchy becomes steeper, more grooming is directed up the hierarchy (in exchange for tolerance or agonistic support) and less grooming is exchanged for other grooming. We assembled a large database of within-group grooming distribution in primates (38 social groups belonging to 16 species and eight genera) and tested these hypotheses both within species (i.e. comparing different groups of the same species) and between species (using comparative methods that control for phylogenetic relatedness). We found within-species evidence that steeper dominance hierarchies were associated with more grooming being directed up the hierarchy, and that a trade-off occurred between the tendency to groom up the hierarchy and the degree of grooming reciprocation (although, in some analyses, only a nonsignificant trend was observed). By contrast, phylogenetically controlled comparisons between species did not reveal evidence of correlated evolution between the steepness of the dominance hierarchy, the tendency to direct grooming up the hierarchy, and the degree of grooming reciprocation.read more
Citations
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Reciprocal Altruism in Primates: Partner Choice, Cognition, and Emotions
Gabriele Schino,Filippo Aureli +1 more
TL;DR: This chapter reviews some of the recent work on altruism in primates and discusses the various ways of demonstrating the occurrence of reciprocal altruism, and argues that partner choice may have played a largerole in the evolution of primate reciprocity.
Book ChapterDOI
Chapter 2 Reciprocal Altruism in Primates: Partner Choice, Cognition, and Emotions
Gabriele Schino,Filippo Aureli +1 more
TL;DR: It is argued that a system of emotional bookkeeping of benefits received may be at the basis of primate reciprocation, consistent with behavioral data and with current knowledge about primate cognitive abilities and the neurobiological correlates of affiliative behaviors.
Journal ArticleDOI
On the psychology of cooperation in humans and other primates: combining the natural history and experimental evidence of prosociality
TL;DR: The comparison suggests that humans share with their closest living relatives reactive responses to signals of need, but differ in sensitivity to signs of need and cues of being watched, as well as in the presence of proactive prosociality.
Journal ArticleDOI
Tolerant Food Sharing and Reciprocity Is Precluded by Despotism Among Bonobos But Not Chimpanzees
TL;DR: A shallow dominance hierarchy was a necessary precondition for the evolution of human-like reciprocal food sharing and an egalitarian hierarchy may be more common in chimpanzees, at least in captivity, thus fostering reciprocal exchange.
Journal ArticleDOI
Reciprocal Exchange Patterned by Market Forces Helps Explain Cooperation in a Small-Scale Society
Adrian V. Jaeggi,Adrian V. Jaeggi,Paul L. Hooper,Bret Alexander Beheim,Hillard Kaplan,Michael Gurven +5 more
TL;DR: This work analyzed cooperation in five domains among 2,161 household dyads of Tsimane' horticulturalists, using Bayesian multilevel models and information-theoretic model comparison to support the view that reciprocal exchange can provide a reliable solution to adaptive problems.
References
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Book
Statistical Methods for Meta-Analysis
Larry V. Hedges,Ingram Olkin +1 more
TL;DR: In this article, the authors present a model for estimating the effect size from a series of experiments using a fixed effect model and a general linear model, and combine these two models to estimate the effect magnitude.
Journal ArticleDOI
Phylogenies and the Comparative Method
TL;DR: A method of correcting for the phylogeny has been proposed, which specifies a set of contrasts among species, contrasts that are statistically independent and can be used in regression or correlation studies.
Journal ArticleDOI
Statistical Methods for Meta-Analysis.
TL;DR: In this paper, the authors present a model for estimating the effect size from a series of experiments using a fixed effect model and a general linear model, and combine these two models to estimate the effect magnitude.
Journal ArticleDOI
Testing for phylogenetic signal in comparative data: behavioral traits are more labile.
TL;DR: Analysis of variance of log K for all 121 traits indicated that behavioral traits exhibit lower signal than body size, morphological, life-history, or physiological traits, and this work presents new methods for continuous-valued characters that can be implemented with either phylogenetically independent contrasts or generalized least-squares models.
Journal ArticleDOI
Procedures for the Analysis of Comparative Data Using Phylogenetically Independent Contrasts
TL;DR: In this article, the authors discuss the application of Felsenstein's (1985, Am. Nat. 125: 1n15) procedures to test for correlated evolution of continuous traits.