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Reduced risk-seeking in chimpanzees in a zero-outcome game
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Keupp, Stefanie, Grueneisen, Sebastian, Ludvig, Elliot Andrew, Warneken, Felix and Melis, Alicia P. (2021) Reduced risk-seeking in chimpanzees in a zero-outcome game. Philosophical Transactions of the Royal Society B: Biological Sciences, 376 (1819). 20190673. doi:10.1098/rstb.2019.0673 ISSN 0962-8436.
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Official URL: https://doi.org/10.1098/rstb.2019.0673
Abstract
A key component of economic decisions is the integration of information about reward outcomes and probabilities in selecting between competing options. In many species, risky choice is influenced by the magnitude of available outcomes, probability of success, and the possibility of extreme outcomes. Chimpanzees are generally regarded to be risk seeking. In this study we examined two aspects of chimpanzees’ risk preferences: First, whether setting the value of the non-preferred outcome of a risky option to zero changes chimpanzees’ risk preferences, and second, whether individual risk preferences are stable across two different measures. Across two experiments, we found chimpanzees (Pan troglodytes, n = 23) as a group to be risk-neutral to risk-avoidant with highly stable individual risk preferences. We discuss how the possibility of going empty-handed might reduce chimpanzees’ risk seeking relative to previous studies. This malleability in risk preferences as a function of experimental parameters and individual differences raises interesting questions about whether it is appropriate or helpful to categorize a species as a whole as risk-seeking or risk-avoidant.
Item Type: | Journal Article | |||||||||
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Subjects: | Q Science > QL Zoology | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | |||||||||
Library of Congress Subject Headings (LCSH): | Chimpanzees -- Behavior | |||||||||
Journal or Publication Title: | Philosophical Transactions of the Royal Society B: Biological Sciences | |||||||||
Publisher: | The Royal Society Publishing | |||||||||
ISSN: | 0962-8436 | |||||||||
Official Date: | 1 March 2021 | |||||||||
Dates: |
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Volume: | 376 | |||||||||
Number: | 1819 | |||||||||
Article Number: | 20190673 | |||||||||
DOI: | 10.1098/rstb.2019.0673 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Copyright Holders: | © 2021 The Authors. | |||||||||
Date of first compliant deposit: | 4 September 2020 | |||||||||
Date of first compliant Open Access: | 7 September 2020 | |||||||||
RIOXX Funder/Project Grant: |
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