Token transfers among great apes (Gorilla gorilla, Pongo pygmaeus, Pan paniscus, and Pan troglodytes): Species differences, gestural requests, and reciprocal exchange.
- 1 November 2009
- journal article
- research article
- Published by American Psychological Association (APA) in Journal of Comparative Psychology
- Vol. 123 (4) , 375-384
- https://doi.org/10.1037/a0017253
Abstract
Great apes appear to be the nonhuman primates most capable of recognizing trading opportunities and engaging in transfers of commodities with conspecifics. Spontaneous exchange of goods between them has not yet been reported. We tested gorillas (Gorilla gorilla), orangutans (Pongo pygmaeus), bonobos (Pan paniscus), and chimpanzees (Pan troglodytes) in a token-exchange task involving two conspecifics and a human experimenter. Tested in pairs, Subjects had to exchange tokens with a partner to obtain food from the experimenter. We observed 4, 5, 264, and 328 transfers of tokens in gorillas, chimpanzees, orangutans, and bonobos, respectively. Most gifts were indirect in gorillas. chimpanzees, and bonobos, whereas most were direct in orangutans. The analysis showed no evidence of calculated reciprocity in interactions. A main finding of the study was the high rate of repeated gifts and begging gestures recorded in orangutans. This raises the question of the meaning of pointing in great apes and their ability to understand the communicative intent of others.Keywords
Funding Information
- L. S. B. Leakey Foundation (2451)
- Agence Nationale de la Recherche (ANR-08-BLAN-0042-01)
This publication has 37 references indexed in Scilit:
- Token mediated tool exchange between tufted capuchin monkeys (Cebus apella)Animal Cognition, 2007
- Chimpanzees (Pan troglodytes) learn to act with other individuals in a cooperative taskPrimates, 2006
- Methods of the International Tobacco Control (ITC) Four Country SurveyTobacco Control, 2006
- Individual-level predictors of cessation behaviours among participants in the International Tobacco Control (ITC) Four Country SurveyTobacco Control, 2006
- Support for and reported compliance with smoke-free restaurants and bars by smokers in four countries: findings from the International Tobacco Control (ITC) Four Country SurveyTobacco Control, 2006
- Multi-stage mental process for economic choice in capuchinsCognition, 2006
- What's in it for me? Self-regard precludes altruism and spite in chimpanzeesProceedings Of The Royal Society B-Biological Sciences, 2006
- Responses to a simple barter task in chimpanzees, Pan troglodytesPrimates, 2005
- The use of tokens as rewards and tools by chimpanzees (Pan troglodytes)Animal Cognition, 2001
- Can competitive paradigms increase the validity of experiments on primate social cognition?Animal Cognition, 2001