Without missing a beat, Andrews passes out a mimeographed worksheet. In one column are faces of boys and girls, each displaying one of the six basic emotions--happy, sad, angry, surprised, afraid, disgusted--and a description of the facial muscle activity underlying each, for example: AFRAID: * The mouth is open and drawn back. * The eyes are open and the inner corners go up. * The eyebrows are raised and drawn together. * There are wrinkles in the middle of the forehead.3