By Denise Chow, LiveScience staff writer:
Lemurs that come from big tribes and live in large groups exhibit more "social smarts" than those that live with only a few companions, finds a new study that suggests the size of a primate's social network could influence its social intelligence.
Researchers designed a series of experiments to test lemurs' social cognition. Essentially, the scientists were curious how lemurs process a situation — specifically, how they decide whether or not a human can see them — and then how they use that information in manipulative ways — in this case, to steal a piece of food if they think they are not being watched, said lead study author Evan MacLean, a senior researcher in the department of evolutionary anthropology at Duke University in Durham, N.C.
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