Psychiatry Investigation is published quarterly by the Korean Neuropsychiatric Association. The Journal covers the whole range of psychiatry and neuroscience. Both basic and clinical contributions are encouraged from all disciplines and research areas relevant to the pathophysiology and management of whole neuropsychiatric disorders and symptoms, as well as researches related to cross cultural psychiatry and ethnic issues in psychiatry. Full-length and brief reports of novel results, case studies of unusual significance, and correspondence and comments judged to be of high impact to the field are published. Concise reviews and editorials, generally invited by the Editor, which focus on topics of current research and interest are all welcomed.