Claudio Naranjo, MD served his psychiatric residency under Matte-Blanco at the University of Chile Clinic and underwent training analysis at the Chilean Psychoanalytic Institute. He conducted extensive psychopharmacological and personality research and worked with Fritz Perls and Dr James Simkin in the early days of Gestalt therapy. Dr Naranjo authored many highly-esteemed therapy titles and was a keynote speaker for the American and European Associations for Humanistic Psychology, and at several national and international Gestalt conferences.