Moisés Kassin, Dipl Psychology, Phd does research in psychotherapy and psychimetric questionaires at the Iberoamerican University, Mexico. He is a professor in the Mexican Psychoanalytic Association and works in private practice as a psychotherapist. He is the director of the Mexican Institute for Studies of Personality Disorders and a supervisor of the Monte Sinai Hebrew School in Mexico City, Mexico. He was the translator of the book Tratamiento para la Identidad del Adolescente Una Aproximación Integral de la Personalidad. Manual Moderno (2015). He holds a master degree in general psychotherapy and is a specialist in child and adolescent psychoanalytic psychotherapy.