All day long we’re surrounded by faces. We see them on the subway sitting two by two, pass them on the sidewalk as we make our way to work, then nod to them in the elevator.
But most of those faces don’t tell us much about the emotional life of the person behind the face.
“People don’t just go around the world smiling or grimacing or frowning,” says psychologist Marcus Munafo of the University of Bristol. “The majority of the facial expressions that you come into contact with — people walking past you in the street, for example — will be ambiguous to some extent.”
Read the whole story: NPR