A new hybrid dimensional-categorical model for personality and personality disorder assessment and diagnosis has been proposed for DSM-5 field testing. The justifications for the proposed modifications in approach to diagnosing personality disorders include lack of specificity in the DSM-IV-TR definition of personality disorder, inadequate representation of personality disorder severity and arbitrary thresholds for diagnosis, excessive comorbidity among personality disorders, limited validity for some existing types, heterogeneity within types, and instability of current personality disorder criteria sets. This chapter reviews the development of the revised personality assessment model, including summaries of literature reviews, experiences in workshops, comments from the field, and published critiques. The next major step in the development of the DSM-5 personality assessment and diagnosis model will be the DSM-5 field trials. Further revisions are anticipated.
Book Review: Psychology: The Millon Inventories: Clinical and Personality Assessment