Journal
BEHAVIORAL SCIENCES
Volume 4, Issue 2, Pages 87-101Publisher
MDPI AG
DOI: 10.3390/bs4020087
Keywords
prosociality; altruism; capuchins; non-human primates; donation tasks
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Funding
- Templeton Foundation Positive Neuroscience Grant from University of Pennsylvania
- McDonnell Scholar Award
- Yale University
- National Science Foundation Graduate Research Fellowship
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Over the past decade, many researchers have used food donation tasks to test whether nonhuman primates show human-like patterns of prosocial behavior in experimental settings. Although these tasks are elegant in their simplicity, performance within and across species is difficult to explain under a unified theoretical framework. Here, we attempt to better understand variation in prosociality by examining the circumstances that promote and hinder the expression of prosocial preferences. To this end, we tested whether capuchin monkeys (Cebus apella)-a species that has previously demonstrated prosocial preferences-would behave prosocially using a novel touchscreen task. In contrast to previous studies, we found that capuchins as a group did not prosocially deliver food to a partner. Importantly however, data from control conditions revealed that subjects demonstrated limited understanding of the reward contingencies of the task. We also compared individuals' performance in the current study with their performance in a previously published prosociality study. We conclude by discussing how continuing to explore intraspecies variation in performance on prosocial tasks may help inform debates regarding the existence of other-regarding preferences in nonhuman species.
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