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. Last Updated: 07/27/2016

Monkeys Play Dumb




WASHINGTON -- Everybody knows that monkeys can see no evil, speak no evil and hear no evil. New research shows that monkeys can also play dumb.


Christine Drea and Kim Wallen of the Yerkes Regional Primate Research Center at Emory University in Atlanta found that monkeys from "dominant'' families performed best individually and in group settings, whereas those from "subordinate'' families showed what they knew only when no dominant monkeys were around.


"We present a case of 'playing dumb' in monkeys, similar to that in humans, in which a specific social setting promoted the voluntary inhibition of performance,'' the researchers wrote in the Oct. 26 Proceedings of the National Academy of Sciences.