Smiling is a simple gesture made of a complex mix of emotions and muscle contractions that lead to the flash of pearly whites we all recognize.
For many years it was thought that smiling was a natural expression that occurred in conjunction with a variety of emotions, but more recently authentic joyous emotional reactions have been come to be known as “Duchenne smiles” by psychologists.
Some researchers think Duchenne smiles reflect not just moments of emotion, but also offer a window into a person’s true personality.
People like to be around people who exhibit Duchenne smiles as they’re a poster for altruism. Not only that, research shows that genuinely smiling more may make you live longer.
Read the full article here: The Psychological Study of Smiling
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