The Minnesota Multiphasic Personality Inventory (MMPI) is a psychological assessment tool used to evaluate personality traits and psychopathology. Developed in the late 1930s, it consists of a series of statements that respondents answer as true or false. The results help clinicians understand an individual's mental health and guide treatment decisions. The MMPI is widely used in various settings, including clinical psychology, counseling, and legal cases. It includes several scales that measure different psychological conditions, such as depression, anxiety, and social introversion. The inventory is considered a reliable and valid tool for assessing personality and mental health.