Peseschkian wrote 26 different psychotherapeutic books, some of them have been translated into 23 languages. The method of positive psychotherapy is a psychodynamic method with a cross-cultural and humanistic background and has been developed beginning in 1968. In 1977, the German Association for Positive Psychotherapy was founded. Internationally, Positive Psychotherapy is represented by the World Association of Positive Psychotherapy. Swiss psychiatrist Professor G. Benedetti, explained in 1979: "His model is a notable synthesis of psychodynamic and behavior-therapeutic elements, making an essential contribution to a unified relationship within psychotherapy".