When a baby smiles at you, it's almost impossible not to smile back. This spontaneous reaction to a facial expression is part of the back-and-forth that allows us to understand each other's emotions ...

Communication between humans comes naturally, since we are very skilled in exchanging several signals when socially interacting. Explicit signals, such as gestures, represent a rich source of ...

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Facial expressions play a fundamental role in social communication. While it is well established that others’ expressions influence our behavior—such as approaching a smiling person or avoiding an ...