The psychiatric interview is not a random or arbitrary meeting between doctor and patient. It is a systematic attempt to understand the relationship of psychopathology to emotional conflicts in patient, and interviewing is an in rather than a science, a skill that can be acquired but probably not taught. The faculty of the Seoul National University Hospital, Department of Psychiatry, have been providing 12 sessions of seminar on Psychiatric Interview and Psychopathology every year for the first year residents for the past 15 years. The authors presented three cases materials with their understandings of psychopathology and psychodynamics, each of which the authors had performed live interviews for 50 minutes in front of the residents. Those are a young male with conversion disorder whose chief complaints was motor aphasia, a young college girl with paranoid schizophrenia whose chief complaints were persecutory and erotic delusions with auditory hallucination, and a climacteric female in delusional disorder who had a delusion of infidelity. The most frequent questions the residents raised after the presentations were on the significances of the first interview, danger of making the diagnoses with short interviews, and methodology of questionings and not-questionings. In reply the authors discussed the importance of understandings of psychopathology and psychodynamics, the flexibility of the techniques of interviewing, and priority-related matters in which the understanding of psychodynamics proceed to the diagnoses.