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By DONO YI dono
E Palagi, A Leone, G Mancini, P F Ferrari
Yawn contagion in humans has been proposed to be related to our capacity for empathy. It is presently unclear whether this capacity is uniquely human or shared with other primates, especially monkeys. Here, we show that in gelada baboons (Theropithecus gelada) yawning is contagious between individuals, especially those that are socially close, i.e., the contagiousness of yawning correlated with the level of grooming contact between individuals. This correlation persisted after controlling for the effect of spatial association...
November 17, 2009: Proceedings of the National Academy of Sciences of the United States of America
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