How Damaging is that Fake Smile?

A woman with long dark hair holds a cardboard cutout of an exaggerated smiling mouth in front of her face, hinting at the effects of a fake smile. The background is plain white.

Selfies, photos, videos, magazines —  our lives are full of others’ facial expressions on a global scale. Science has used these facial expressions as a source of research in fields like lie detection and social cognitive neuroscience. Neuroscientists differentiate two types of smiles; a genuine smile called the Duchenne smile which is characterized by the tiny […]

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