The MCMI is a psychological assessment tool intended to provide information on personality traits and psychopathology, including specific psychiatric disorders outlined in the DSM. Based on Theodore Millon, Ph. D., D.Sc.'s Evolutionary Theory of personality and psychopathology, the brief Millon Clinical Multiaxial Inventory-III (MCMI-III) instrument provides a measure of 24 personality disorders and clinical syndromes for adults undergoing psychological or psychiatric assessment or treatment.