text: A classroom computer could recognize when a student is becoming confused or bored, Dr. Haung predicts. Then it could modify the lesson, like an effective human instructor. Most human communication is nonverval, including emotional communication, notes Dr. Haung. According to the Facila Feedback Theory of Emotion, muving your facial muscles not only expresses emotions, but also help to produce them. whoever thought that making faces could reveal so much about the scien of emotions.