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Curr Biol. 2009 Jul 14;19(13):R511-3. doi: 10.1016/j.cub.2009.05.007.

Animal communication: laughter is the shortest distance between two apes.

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  • 1Department of Psychology, School of Life Sciences, University of Sussex, Falmer, East Sussex BN1 9QH, UK.


New acoustic analyses of the calls of great apes and humans in response to tickling reveal the probable evolutionary history of laughter in humans and our nearest living relatives, the great apes.

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