BACKGROUND: DSM-5 may mark the shift from a categorical classification of personality pathology to a dimensional system. Although dimensional and categorical conceptualizations of personality pathology are often viewed as competing, it is possible to develop categories (prototypes) from combinations of dimensions. Robust prototypes could bridge dimensions and categories within a single classification system. METHOD: To explore prototype structure and robustness, we used finite mixture modeling to identify empirically derived personality pathology prototypes within a large sample (n=8690) of individuals from four settings (clinical, college, community, and military), assessed using a dimensional measure of normal and abnormal personality traits, the Schedule for Nonadaptive and Adaptive Personality (SNAP). We then examined patterns of convergent and discriminant external validity for prototypes. Finally, we investigated the robustness of the dimensional structure of personality pathology. RESULTS: The resulting prototypes were meaningful (externally valid) but non-robust (sample dependent). By contrast, factor analysis revealed that the dimensional structures underlying specific traits were highly robust across samples. CONCLUSIONS: We interpret these results as further evidence of the fundamentally dimensional nature of an empirically based classification of personality pathology.
BACKGROUND: DSM-5 may mark the shift from a categorical classification of personality pathology to a dimensional system. Although dimensional and categorical conceptualizations of personality pathology are often viewed as competing, it is possible to develop categories (prototypes) from combinations of dimensions. Robust prototypes could bridge dimensions and categories within a single classification system. METHOD: To explore prototype structure and robustness, we used finite mixture modeling to identify empirically derived personality pathology prototypes within a large sample (n=8690) of individuals from four settings (clinical, college, community, and military), assessed using a dimensional measure of normal and abnormal personality traits, the Schedule for Nonadaptive and Adaptive Personality (SNAP). We then examined patterns of convergent and discriminant external validity for prototypes. Finally, we investigated the robustness of the dimensional structure of personality pathology. RESULTS: The resulting prototypes were meaningful (externally valid) but non-robust (sample dependent). By contrast, factor analysis revealed that the dimensional structures underlying specific traits were highly robust across samples. CONCLUSIONS: We interpret these results as further evidence of the fundamentally dimensional nature of an empirically based classification of personality pathology.
Authors: Fritz Renner; Robin B Jarrett; Jeffrey R Vittengl; Marna S Barrett; Lee Anna Clark; Michael E Thase Journal: J Affect Disord Date: 2012-02-04 Impact factor: 4.839
Authors: Lisa M James; Brian E Engdahl; Arthur C Leuthold; Robert F Krueger; Apostolos P Georgopoulos Journal: Exp Brain Res Date: 2015-08-30 Impact factor: 1.972
Authors: Robert F Krueger; Roman Kotov; David Watson; Miriam K Forbes; Nicholas R Eaton; Camilo J Ruggero; Leonard J Simms; Thomas A Widiger; Thomas M Achenbach; Bo Bach; R Michael Bagby; Marina A Bornovalova; William T Carpenter; Michael Chmielewski; David C Cicero; Lee Anna Clark; Christopher Conway; Barbara DeClercq; Colin G DeYoung; Anna R Docherty; Laura E Drislane; Michael B First; Kelsie T Forbush; Michael Hallquist; John D Haltigan; Christopher J Hopwood; Masha Y Ivanova; Katherine G Jonas; Robert D Latzman; Kristian E Markon; Joshua D Miller; Leslie C Morey; Stephanie N Mullins-Sweatt; Johan Ormel; Praveetha Patalay; Christopher J Patrick; Aaron L Pincus; Darrel A Regier; Ulrich Reininghaus; Leslie A Rescorla; Douglas B Samuel; Martin Sellbom; Alexander J Shackman; Andrew Skodol; Tim Slade; Susan C South; Matthew Sunderland; Jennifer L Tackett; Noah C Venables; Irwin D Waldman; Monika A Waszczuk; Mark H Waugh; Aidan G C Wright; David H Zald; Johannes Zimmermann Journal: World Psychiatry Date: 2018-10 Impact factor: 49.548