Drastic changes in the world have brought people unstable health states, and various stressors have always influenced the personality in people. From a psychological and ethical point of view, ego means consciousness about empirical individuality and a conscious personality that keeps contact with the reality and mediates id and super ego. In transactional analysis (TA), 3 egos (personality) are suggested to exist in a human, which are parent’s ego (P), adult’s ego (A), and child’s ego (C). Based on the theory of Berne and Dusay, transitional analysis and phycological test, egogram has been originated and used widely in medical, clinical, educational and social fields. It has 5 factors, which are Critical Parent (CP), Nurturing Parent (NP), Adult (A), Free Child (FC), Adapted Child (AC). Based on the principle of egogram, Tokyo University Egogram (TEG) was developed and standardized by sufficient statistical investigation. Furthermore, there are related research for egogram and psychosomatic medicine, hypertension, oral malodor, donors for organ transplantation, stress medicine, mental health, music therapy, education, business and so on. Consequently, egogram, TEG and TA have been helpful method to evaluate, investigate and treat for various psychological situation.
Keywords: Egogram, Tokyo University egogram (TEG), Transactional analysis, Personality, Better communication.