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Lookup NU author(s): Professor Daniel Nettle,
Professor Melissa Bateson
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
Recent evidence has shown that humans are remarkably sensitive to artificial cues of conspecific observation when making decisions with potential social consequences. Whether similar effects are found in other great apes has not yet been investigated. We carried out two experiments in which individual chimpanzees, Pan troglodytes, took items of food from an array in the presence of either an image of a large conspecific face or a scrambled control image. In experiment 1 we compared three versions of the face image varying in size and the amount of the face displayed. In experiment 2 we compared a fourth variant of the image with more prominent coloured eyes displayed closer to the focal chimpanzee. The chimpanzees did not look at the face images significantly more than at the control images in either experiment. Although there were trends for some individuals in each experiment to be slower to take high-value food items in the face conditions, these were not consistent or robust. We suggest that the extreme human sensitivity to cues of potential conspecific observation may not be shared with chimpanzees. (C) 2013 The Authors. Published on behalf of The Association for the Study of Animal Behaviour by Elsevier Ltd. All rights reserved.
Author(s): Nettle D, Cronin KA, Bateson M
Publication type: Article
Publication status: Published
Journal: Animal Behaviour
Print publication date: 01/09/2013
Online publication date: 25/07/2013
Acceptance date: 10/06/2013
Date deposited: 29/11/2013
ISSN (print): 0003-3472
ISSN (electronic): 1095-8282
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