Our current nosology of psychopathology relies on a categorical model that has notable limitations. For example, this medical model of classifying mental disorders does not account for the significant heterogeneity of symptom presentations across psychopathology. Today, we speak with Robert Latzman, Ph.D., to discuss the Hierarchical Taxonomy of Psychopathology (HiTOP), an alternative nosology that uses factor analysis to address the issues with our current diagnostic classification standard.