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Who's bad? Chimps figure it out by observation
Date:3/26/2008

Chimpanzees make judgments about the actions and dispositions of strangers by observing others behavior and interactions in different situations. Specifically, chimpanzees show an ability to recognize certain behavioral traits and make assumptions about the presence or absence of these traits in strangers in similar situations thereafter. These findings, by Dr. Francys Subiaul - from the George Washington University in Washington DC - and his team, have just been published online in Animal Cognition, a Springer journal.

Character judgments are an essential feature of cooperative exchanges between humans, and we use them to predict future behavioral interactions. A system for attributing reputation is therefore expected in any species which needs to assess the behavior of others and to predict the outcomes of future interactions. Chimpanzees have sophisticated social skills and there is evidence that primates eavesdrop and benefit from third-party interactions. Could they have a system for forming reputation judgments across a wide variety of contexts like humans"

In a series of three experiments, Dr. Subiaul and colleagues looked at whether chimpanzees learn the reputation of strangers indirectly by observation, or by first-hand experience. Seven chimpanzees observed unfamiliar humans either consistently give (generous donor) or refuse to give (selfish donor) food to either a familiar human recipient or another chimp.

In the first experiment, after observing humans either give or refuse food to familiar humans, chimps were in turn given the opportunity to gesture to either the selfish or the generous human. There was no marked preference for either donor. However, in a second experiment, the researchers evaluated whether prolonged observation and first-hand experience would allow chimps to generalize this social rulepertaining to the reputation of strangersto new humans. In this experiment, the chimpanzees showed a strong preference f
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Contact: Joan Robinson
joan.robinson@springer.com
49-622-148-78130
Springer
Source:Eurekalert

Page: 1 2

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