[Nonverbal communication and its implication for psychiatry].

Psychiatry unlike philosophy (with its problem of solipsism) recognizes the existence of other minds from the nonverbal communication between doctor and patient. This nonverbal, or having deeper roots in evolution, preverbal communication, is the connection within a herd or horde. As psychiatry gains many of its diagnostic criteria like mood, excitation or fear by nonverbal communication, it brings the patient in a biological-ethological frame where aim, biological sense and evolutional origin are justified questions of normal and abnormal behavior and of psychological events.