Scientists decode physical impact of smiles

by on March 5, 2018

New York: Not all smiles express warmth and joy, but they can also be mean. Human bodies tend to react differently depending on the message a smile is meant to send, say US psychologists. The study showed that smiles meant to convey dominance are associated with a physical reaction “a spike in stress hormones” in their targets. On the other hand, smiles… – Science News

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