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Chimpanzees Show a Developmental Increase in Susceptibility to Contagious Yawning: A Test of the Effect of Ontogeny and Emotional Closeness on Yawn Contagion
Madsen EA,
Persson T,
Sayehli S,
Lenninger S,
Sonesson G
(2013)
Chimpanzees Show a Developmental Increase in Susceptibility to Contagious Yawning: A Test of the Effect of Ontogeny and Emotional Closeness on Yawn Contagion.
PLOS ONE 8(10): e76266.
https://doi.org/10.1371/journal.pone.0076266