Ekman and Friesen's breakthrough research on the facial expression of emotion is richly illustrated with photographs depicting surprise, fear, disgust, anger, happiness and sadness. The authors explain how to identify these basic emotions correctly and how to tell when people try to mask, simulate or neutralize them. The book features several practical exercises that can help actors, teachers, salesmen, counselors, nurses, law-enforcement personnel and physicians - and everyone else who deals with people - become adept, perceptive readers of the facial expressions of emotions.