Incremental Validity of the Appendix Personality Disorders

With the publication of the DSM-5 the so-called "Appendix" Personality Disorders (Self-Defeating, Depressive, and Passive-Aggressive) were gone, despite their long history in the literature. Using hierarchical multiple regression, we found good evidence for the incremental validity of the Appendix PDs in the prediction of several personality-related outcome variables.