The movement behavior of the patient in psychotherapy provides diagnostically valuable information about their experiences and attitudes. While this potential is explicitly utilized for therapeutic work in body- and movement-oriented psychotherapy methods, comparable approaches are still rare in verbal psychotherapy, even though body movement is equally present there. Therapists and patients process—mostly unconsciously—the posture, gestures, self-touching, and changes in position of the other person and respond—also unconsciously—to their nonverbal behavior. Based on a solid theoretical and empirical introduction to movement behavior, the book describes diagnostic and therapeutic approaches for working with nonverbal expression in psychotherapy.