NDLI: A reversed-reward contingency task reveals causal knowledge in chimpanzees (Pan troglodytes)

Content Provider	Springer Nature Link
Author	Albiach Serra, Anna Call, Josep
Copyright Year	2014
Abstract	In the reversed-reward contingency task, subjects are required to choose the less preferred of two options in order to obtain the more preferred one. Usually, this task is used to measure inhibitory skills, but it could also be used to measure how strong the subjects’ preferences are. We presented chimpanzees with support tasks where only one of two paper strips could physically bring food into reach. Subjects were rewarded for choosing the non-functional strip. In Experiment 1, subjects failed to pick the non-baited strip. In Experiment 2, subjects failed to pick the broken strip. Chimpanzees performed worse in these tasks than in other similar tasks where instead of paper strips, there were similar shapes painted on a platform. The fact that subjects found the reversed-reward contingency task based on causality more difficult to solve than a perceptually similar task with no causality involved (i.e., arbitrary) suggests that they did not treat real strips as an arbitrary task. Instead, they must have had some causal knowledge of the support problem that made them prefer functional over non-functional strips despite the contrary reward regime.
Starting Page	1167
Ending Page	1176
Page Count	10
File Format	PDF
ISSN	14359448
Journal	Animal Cognition
Volume Number	17
Issue Number	5
e-ISSN	14359456
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-04-18
Publisher Place	Berlin, Heidelberg
Access Restriction	Subscribed
Subject Keyword	Reversed-reward contingency Inhibition Support Causal knowledge Chimpanzees Behavioural Sciences Zoology Human Physiology Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Ecology, Evolution, Behavior and Systematics

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