Revenstorf Dirk is a psychologist, psychotherapist and since 1974 Professor of Clinical Psychology at the University of Tuebingen. Between 1995 and 1997 served as a visiting professor teaching at the University of the Americas in Puebla, Mexico. Since 1984 a member of the board of the Milton Erickson Society in Germany and has been one of the founders of the Chinese-German Academy of Psychotherapy. The authorship should be numerous publications related to issues of clinical psychology and psychotherapy, among which his important works dealing with hypnotherapy.