Dr. Theodoros Tsirigotis, Psy.D. RM UKCP, RAPPS, CPSychol, is a clinical psychologist, psychotherapist and trainer. Since 2019, he has been a Fellow of IOC Mc Lean Hospital, Harvard Medical School. He is a certified supervisor ( Register of Applied Psychology Practice Supervisors), clinical psychologist and trauma expert and international trainer under the European Association of Psychodynamic Psychotherapy and the UK Psychological Trauma Society. He is trained in psychoanalytic psychotherapy, family & group therapy and in CBT. Dr. Tsirigotis has extensive clinical experience in major hospitals such as e. Maudsley, St. Thomas, Pitié-Salpêtrière University Hospital and Bretonneau Hospital and has been teaching in higher education the last fifteen years. He is the editor of the Greek edition of “Easy Ego State Interventions: Strategies for Working with Parts” and "Skills in Psychodynamic Counselling and Psychotherapy” by Susan Howard (Kathexis Publications). At Hellenic American University Dr. Tsirigotis teaches Psychopathology and Diagnosis, as well as Ethical, Legal and Professional Issues in Clinical Practice in the MSPSY program.