Aping expressions: Chimpanzees produce distinct laugh types when responding to laughter of others

Authors: M. Davila Ross, B. Allcock, C. Thomas, K.A. Bard

Humans have the ability to replicate the emotional expressions of others even when they undergo different emotions. Such distinct responses of expressions, especially positive expressions, play a central role in everyday social communication of humans and may give the responding individuals important advantages in cooperation and communication.

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