Reading Faces: Why You Sometimes Get It Wrong

Every culture, however, has consistent expectations about how the public display of emotion should be handled. … Qualifying is a technique by which you immediately follow a genuine expression that has slipped out with a different expression, as if to say “pay no attention to what you just saw—this is how I really feel.” Modulating is what you do when you turn the volume of an emotional expression up or down depending upon the circumstance.  

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