Payoff- and Sex-Biased Social Learning Interact in a Wild Primate Population

Current Biology : CB
Axelle E J BonoErica van de Waal

Abstract

Social learning in animals is now well documented, but few studies have determined the contexts shaping when social learning is deployed. Theoretical studies predict copying of conspecifics gaining higher payoffs [1-4], a bias demonstrated in primates only in captivity [5]. In the wild, research has shown selective attention toward the philopatric sex, a group's stable core [6]. Here, we report the first rigorous experimental test of the existence of a payoff bias in wild primates and its interaction with the sex of the model. We created a payoff bias in which an immigrant alpha male in each of three groups of wild vervet monkeys received five times more food upon opening a foraging box than did the philopatric alpha female, whereas in two control groups, male and female models received the same amount of food. We tested whether this payoff asymmetry would override the previously documented selective learning from resident females. Group members were tested after having watched both models. When both models received the same amount of food, audience members copied the female model significantly more than the male model, confirming previous findings. However, when a marked payoff bias was introduced, male, but not female, vervet...Continue Reading

Citations

Sep 13, 2019·The Behavioral and Brain Sciences·Andrew Whiten
Jan 25, 2020·Nature Communications·Charlotte CanteloupErica van de Waal
Mar 5, 2020·Nature Communications·Noa TruskanovRedouan Bshary
May 29, 2020·The Behavioral and Brain Sciences·Andrew Whiten
Apr 17, 2019·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Justine MertzJennifer Botting
May 20, 2021·Scientific Reports·Charlotte CanteloupErica van de Waal
Jul 4, 2021·Neuroscience and Biobehavioral Reviews·Damiano TerenziSoyoung Q Park

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