This course aims to provide students with a comprehensive and advanced understanding of psychopathology and psychiatric diagnosis. First, common assessment methods including the mental status examination, psychological inventories, and clinical structured interview will be introduced. Second, legal and ethical standards, and etiologies of psychological disorders will be covered. Third, the DSM-5 as a system of classification of psychiatric disorders will be introduced. Fourth, the majority of the course will focus on in-depth discussion of common psychiatric disorders using the DSM system as framework so that students can develop differential diagnosis skills as well as understand appropriate evidence-based treatments of each psychiatric disorder. Finally, cultural factors, theoretical controversies, and professional issues are explored.