“The face acts “like a road sign to affect the traffic that’s going past it,” says Alan Fridlund, a psychology professor at University of California Santa Barbara who co-authored a recent study with De Montfort University’s Crivelli arguing for a more utilitarian view of facial expressions. “Our faces are ways we direct the trajectory of a social interaction.”
That’s not to say that we actively try to manipulate others with our facial expressions (though every once in a while, we might). Our smiles and frowns may well be instinctive….”
Click BBC – Future – Why our facial expressions don’t reflect our feelings for the rest of the article.
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