Thomas A. Widiger, Ph.D., is professor in the Department of Psychology at the University of Kentucky in Lexington, Kentucky.Erik Simonsen, M.D., is Chief Psychiatrist at Roskilde County Hospital Fjorden and Medical Director at the Institute of Personality Theory and Psychopathology in Roskilde, Denmark.Paul J. Sirovatka, M.S., is Associate Director for Research at the American Psychiatric Institute for Research and Education and the Division of Research at the American Psychiatric Association in Washington, D.C.Darrel A. Regier, M.D., M.P.H., is Executive Director of the American Psychiatric Institute for Research and Education and Director of the Division of Research at the American Psychiatric Association in Washington, D.C.

• ContributorsDisclosure statementForewordPrefaceIntroductionChapter 1. Alternative dimensional models of personality disorder: finding a common groundChapter 2. Commentary on Widiger and Simonsen: toward a consensus personality trait structureChapter 3. Commentary on Widiger and Simonsen: working out a dimensional frameworkChapter 4. Commentary on Widiger and Simonsen: from ICD-10 and DSM-IV to ICD-11 and DSM-VChapter 5. Behavioral and molecular genetic contributions to a dimensional classification of personality disorderChapter 6. Commentary on Livesley: genetic contributions to a dimensional classification: problems and pitfallsChapter 7. Neurobiological dimensional models of personality: a review of three modelsChapter 8. Commentary on Paris: personality as a dynamic psychobiological systemChapter 9. Commentary on Paris: the problem of severity in personality disorder classificationChapter 10. Temperament and personality as broad-spectrum antecedents of psychopathology in childhood and adolescenceChapter 11. Commentary on Mervielde et al.: toward a developmental perspective on personality disordersChapter 12. Personality dimensions across culturesChapter 13. Commentary on Allik: the lexical approach to the study of personality structureChapter 14. Commentary on Allik: a historical perspective on personality disorderChapter 15. Commentary on Allik: cross-cultural diagnosis of personality disorderChapter 16. Continuity of Axes I and II: toward a unified model of personality, personality disorders, and clinical disordersChapter 17. Commentary on Krueger: what to do with the old distinctionsChapter 18. Commentary on Krueger: traits versus types in the classification of personality pathologyChapter 19. Dimensional models: coverage and cutoffsChapter 20. Commentary on Trull: drizzling on the 5 ± 3 factor paradeChapter 21. Commentary on Trull: just do it: replace Axis II with a diagnostic system based on the Five-Factor Model of PersonalityChapter 22. Commentary on Trull: reservations and hopesChapter 23. Clinical utility of dimensional models for personality pathologyChapter 24. Commentary on Verheul: focusing on the clinician's need for a better modelChapter 25. Commentary on Verheul: clinical utility of dimensional models for personality pathologyChapter 26. Personality disorder research agenda for DSM-VIndex

Thomas A. Widiger, Ph.D., is professor in the Department of Psychology at the University of Kentucky in Lexington, Kentucky.Erik Simonsen, M.D., is Chief Psychiatrist at Roskilde County Hospital Fjorden and Medical Director at the Institute of Personality Theory and Psychopathology in Roskilde, Denmark.Paul J. Sirovatka, M.S., is Associate Director for Research at the American Psychiatric Institute for Research and Education and the Division of Research at the American Psychiatric Association in Washington, D.C.Darrel A. Regier, M.D., M.P.H., is Executive Director of the American Psychiatric Institute for Research and Education and Director of the Division of Research at the American Psychiatric Association in Washington, D.C.

• ContributorsDisclosure statementForewordPrefaceIntroductionChapter 1. Alternative dimensional models of personality disorder: finding a common groundChapter 2. Commentary on Widiger and Simonsen: toward a consensus personality trait structureChapter 3. Commentary on Widiger and Simonsen: working out a dimensional frameworkChapter 4. Commentary on Widiger and Simonsen: from ICD-10 and DSM-IV to ICD-11 and DSM-VChapter 5. Behavioral and molecular genetic contributions to a dimensional classification of personality disorderChapter 6. Commentary on Livesley: genetic contributions to a dimensional classification: problems and pitfallsChapter 7. Neurobiological dimensional models of personality: a review of three modelsChapter 8. Commentary on Paris: personality as a dynamic psychobiological systemChapter 9. Commentary on Paris: the problem of severity in personality disorder classificationChapter 10. Temperament and personality as broad-spectrum antecedents of psychopathology in childhood and adolescenceChapter 11. Commentary on Mervielde et al.: toward a developmental perspective on personality disordersChapter 12. Personality dimensions across culturesChapter 13. Commentary on Allik: the lexical approach to the study of personality structureChapter 14. Commentary on Allik: a historical perspective on personality disorderChapter 15. Commentary on Allik: cross-cultural diagnosis of personality disorderChapter 16. Continuity of Axes I and II: toward a unified model of personality, personality disorders, and clinical disordersChapter 17. Commentary on Krueger: what to do with the old distinctionsChapter 18. Commentary on Krueger: traits versus types in the classification of personality pathologyChapter 19. Dimensional models: coverage and cutoffsChapter 20. Commentary on Trull: drizzling on the 5 ± 3 factor paradeChapter 21. Commentary on Trull: just do it: replace Axis II with a diagnostic system based on the Five-Factor Model of PersonalityChapter 22. Commentary on Trull: reservations and hopesChapter 23. Clinical utility of dimensional models for personality pathologyChapter 24. Commentary on Verheul: focusing on the clinician's need for a better modelChapter 25. Commentary on Verheul: clinical utility of dimensional models for personality pathologyChapter 26. Personality disorder research agenda for DSM-VIndex

Thomas A. Widiger, Ph.D., is professor in the Department of Psychology at the University of Kentucky in Lexington, Kentucky.Erik Simonsen, M.D., is Chief Psychiatrist at Roskilde County Hospital Fjorden and Medical Director at the Institute of Personality Theory and Psychopathology in Roskilde, Denmark.Paul J. Sirovatka, M.S., is Associate Director for Research at the American Psychiatric Institute for Research and Education and the Division of Research at the American Psychiatric Association in Washington, D.C.Darrel A. Regier, M.D., M.P.H., is Executive Director of the American Psychiatric Institute for Research and Education and Director of the Division of Research at the American Psychiatric Association in Washington, D.C.

• ContributorsDisclosure statementForewordPrefaceIntroductionChapter 1. Alternative dimensional models of personality disorder: finding a common groundChapter 2. Commentary on Widiger and Simonsen: toward a consensus personality trait structureChapter 3. Commentary on Widiger and Simonsen: working out a dimensional frameworkChapter 4. Commentary on Widiger and Simonsen: from ICD-10 and DSM-IV to ICD-11 and DSM-VChapter 5. Behavioral and molecular genetic contributions to a dimensional classification of personality disorderChapter 6. Commentary on Livesley: genetic contributions to a dimensional classification: problems and pitfallsChapter 7. Neurobiological dimensional models of personality: a review of three modelsChapter 8. Commentary on Paris: personality as a dynamic psychobiological systemChapter 9. Commentary on Paris: the problem of severity in personality disorder classificationChapter 10. Temperament and personality as broad-spectrum antecedents of psychopathology in childhood and adolescenceChapter 11. Commentary on Mervielde et al.: toward a developmental perspective on personality disordersChapter 12. Personality dimensions across culturesChapter 13. Commentary on Allik: the lexical approach to the study of personality structureChapter 14. Commentary on Allik: a historical perspective on personality disorderChapter 15. Commentary on Allik: cross-cultural diagnosis of personality disorderChapter 16. Continuity of Axes I and II: toward a unified model of personality, personality disorders, and clinical disordersChapter 17. Commentary on Krueger: what to do with the old distinctionsChapter 18. Commentary on Krueger: traits versus types in the classification of personality pathologyChapter 19. Dimensional models: coverage and cutoffsChapter 20. Commentary on Trull: drizzling on the 5 ± 3 factor paradeChapter 21. Commentary on Trull: just do it: replace Axis II with a diagnostic system based on the Five-Factor Model of PersonalityChapter 22. Commentary on Trull: reservations and hopesChapter 23. Clinical utility of dimensional models for personality pathologyChapter 24. Commentary on Verheul: focusing on the clinician's need for a better modelChapter 25. Commentary on Verheul: clinical utility of dimensional models for personality pathologyChapter 26. Personality disorder research agenda for DSM-VIndex