Baby monkey smiles point to origin of laughter
Sunday, August 7, 2016 - 10:21
in Psychology & Sociology
When human and chimp infants are dozing, they sometimes show facial movements that resemble smiles. These facial expressions — called spontaneous smiles — are considered the evolutionary origin of real smiles and laughter. Researchers at Kyoto University’s Primate Research Institute show that this not only happens to higher-order primates like humans and chimpanzees, but also […]