NDLI: Long-tailed macaques display unexpected waiting abilities in exchange tasks

Content Provider	Springer Nature Link
Author	Pelé, Marie Dufour, Valérie Micheletta, Jérôme Thierry, Bernard
Copyright Year	2009
Abstract	The ability of animals to delay gratification is crucial for complex goal-directed action. It may help them in making effective decisions when facing a choice. We tested the ability of nine long-tailed macaques (Macaca fascicularis) to delay gratification in several experiments. In exchange tasks, subjects had to keep a small piece of cookie before returning it to an experimenter in order to get a larger food amount. Results showed that animals could wait between 10 s and 10 min depending on individual and sizes of reward. In another experiment, subjects could immediately give back the initial piece of cookie then wait for the return. Their performances more than doubled, demonstrating the role of consumption inhibition in postponing gratification. Such achievements underscore delays of gratification which until now were not thought possible in monkeys. Finally, subjects were presented with an accumulation of food pieces added at short intervals until they seized them. They mostly waited between 30 s and 1 min, which points at the consistency of our data, compared to those of other studies. Our results indicate that long-tailed macaques anticipated the duration of delays. We may account for their remarkable performances by their achievements in the social context.
Starting Page	263
Ending Page	271
Page Count	9
File Format	PDF
ISSN	14359448
Journal	Animal Cognition
Volume Number	13
Issue Number	2
e-ISSN	14359456
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-07-14
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Delay of gratification Exchange Decision-making Economics Macaca fascicularis Zoology Behavioural Sciences Human Physiology Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Ecology, Evolution, Behavior and Systematics

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