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They grin, you bear it -- research reveals physical impact of a smile


March 1, 2018

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Research led by Jared Martin, a psychology graduate student at the University of Wisconsin-Madison, shows 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 intended as a reward, to reinforce behavior, appear to physically buffer recipients against stress.Full Story

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University of Wisconsin-Madison

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