Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates

A key challenge for primates living in large, stable social groups is managing social relationships. Chimpanzee gestures may act as a time-efficient social bonding mechanism, and the presence (homogeneity) and absence (heterogeneity) of overlap in repertoires in particular may play an important role...

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Main Authors: Anna Ilona Roberts, Sam George Bradley Roberts
Format: Article
Language:English
Published: The Royal Society 2017-01-01
Series:Royal Society Open Science
Subjects:
Online Access:https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170181
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author Anna Ilona Roberts
Sam George Bradley Roberts
author_facet Anna Ilona Roberts
Sam George Bradley Roberts
author_sort Anna Ilona Roberts
collection DOAJ
description A key challenge for primates living in large, stable social groups is managing social relationships. Chimpanzee gestures may act as a time-efficient social bonding mechanism, and the presence (homogeneity) and absence (heterogeneity) of overlap in repertoires in particular may play an important role in social bonding. However, how homogeneity and heterogeneity in the gestural repertoire of primates relate to social interaction is poorly understood. We used social network analysis and generalized linear mixed modelling to examine this question in wild chimpanzees. The repertoire size of both homogeneous and heterogeneous visual, tactile and auditory gestures was associated with the duration of time spent in social bonding behaviour, centrality in the social bonding network and demography. The audience size of partners who displayed similar or different characteristics to the signaller (e.g. same or opposite age or sex category) also influenced the use of homogeneous and heterogeneous gestures. Homogeneous and heterogeneous gestures were differentially associated with the presence of emotional reactions in response to the gesture and the presence of a change in the recipient's behaviour. Homogeneity and heterogeneity of gestural communication play a key role in maintaining a differentiated set of strong and weak social relationships in complex, multilevel societies.
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spelling doaj.art-f38c100369a84a42a35b63fc3b4da3232022-12-21T19:21:47ZengThe Royal SocietyRoyal Society Open Science2054-57032017-01-0141110.1098/rsos.170181170181Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primatesAnna Ilona RobertsSam George Bradley RobertsA key challenge for primates living in large, stable social groups is managing social relationships. Chimpanzee gestures may act as a time-efficient social bonding mechanism, and the presence (homogeneity) and absence (heterogeneity) of overlap in repertoires in particular may play an important role in social bonding. However, how homogeneity and heterogeneity in the gestural repertoire of primates relate to social interaction is poorly understood. We used social network analysis and generalized linear mixed modelling to examine this question in wild chimpanzees. The repertoire size of both homogeneous and heterogeneous visual, tactile and auditory gestures was associated with the duration of time spent in social bonding behaviour, centrality in the social bonding network and demography. The audience size of partners who displayed similar or different characteristics to the signaller (e.g. same or opposite age or sex category) also influenced the use of homogeneous and heterogeneous gestures. Homogeneous and heterogeneous gestures were differentially associated with the presence of emotional reactions in response to the gesture and the presence of a change in the recipient's behaviour. Homogeneity and heterogeneity of gestural communication play a key role in maintaining a differentiated set of strong and weak social relationships in complex, multilevel societies.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170181chimpanzeesgestural repertoirehomogeneityheterogeneitysocial network analysisgeneralized linear model
spellingShingle Anna Ilona Roberts
Sam George Bradley Roberts
Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates
Royal Society Open Science
chimpanzees
gestural repertoire
homogeneity
heterogeneity
social network analysis
generalized linear model
title Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates
title_full Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates
title_fullStr Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates
title_full_unstemmed Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates
title_short Convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates
title_sort convergence and divergence in gesture repertoires as an adaptive mechanism for social bonding in primates
topic chimpanzees
gestural repertoire
homogeneity
heterogeneity
social network analysis
generalized linear model
url https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.170181
work_keys_str_mv AT annailonaroberts convergenceanddivergenceingesturerepertoiresasanadaptivemechanismforsocialbondinginprimates
AT samgeorgebradleyroberts convergenceanddivergenceingesturerepertoiresasanadaptivemechanismforsocialbondinginprimates