Journal
JOURNAL OF COMPARATIVE PSYCHOLOGY
Volume 123, Issue 4, Pages 368-374Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0017079
Keywords
gaze following; spider monkeys; capuchin monkeys; comparative cognition
Funding
- SEDSU [012-984]
- European Community [FP6/2002-2006]
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Gaze following is an adaptive skill that might have been selected in social species, such as many nonhuman primates, to obtain information about food location, predators, and social interactions. The authors investigated the ability of spider monkeys (Ateles geoffroyi) and capuchin monkeys (Cebus apella) to follow the gaze of a human around barriers and the presence of looking back behavior. In the 1st experiment, a human looked to a target location inside the testing room, whereas in the 2nd experiment, the human looked behind an opaque barrier placed outside the testing room. The authors compared the frequency of looking at the target location with the corresponding baseline looking frequencies. Both species (a) showed evidence of spontaneous gaze following in the 1st experiment and (b) engaged in gaze following behind the barrier in the 2nd experiment. In contrast, neither species performed looking back responses. The authors conclude that both monkey species showed some indication of perspective-taking abilities, although the absence of looking back behavior suggests a potential difference from the abilities shown by the great apes.
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