Geology 102: More Thoughts on a Shift to a Dimensional Model of Personality Disorders

The classification of personality disorders is at a critical stage. The categorical model presented in the official diagnostic manual of mental disorders has serious limitations, and it is time for a shift to a dimensional model of personality disorder. Although the evidence in favor of switching to a dimensional model of personality disorder is compelling, the fields of clinical psychology and psychiatry have been reluctant to make the shift. We think some of this reluctance is due to a misunderstanding of the current state of dimensional models of personality and personality disorders. We address three major myths about dimensional models and provide responses to each.     

Assessment of the five-factor model of personality

The five-factor model (FFM) of personality is obtaining construct validation, recognition, and practical consideration across a broad domain of fields, including clinical psychology, industrial-organizational psychology, and health psychology. As a result, an array of instruments have been developed and existing instruments are being modified to assess the FFM. In this article, we present an overview and critique of five such instruments (the Goldberg Big Five Markers, the revised NEO Personality Inventory, the Interpersonal Adjective Scales-Big Five, the Personality Psychopathology-Five, and the Hogan Personality Inventory), focusing in particular on their representation of the lexical FFM and their practical application.     

Personality disorder research agenda for the DSM-V

The American Psychiatric Association is sponsoring a series of international conferences to set a research agenda for the development of the next edition of the diagnostic manual. The first conference in this series, "Dimensional Models of Personality Disorder: Etiology, Pathology, Phenomenology, and Treatment," was devoted to reviewing the existing research and setting a future research agenda that would be most effective in leading the field toward a dimensional classification of personality disorder. The purpose of this article, authored by the Steering Committee of this conference, was to provide a summary of the conference papers and their recommendations for research. Covered herein are the reviews and recommendations concerning alternative dimensional models of personality disorder, behavioral genetics and gene mapping, neurobiological mechanisms, childhood antecedents, cross-cultural issues, Axes I and II continuity, coverage and cutoff points for diagnosis, and clinical utility.     

Evidence-based assessment of personality disorders

The purpose of this article is to provide a foundation for the development of evidence-based guidelines for the assessment of personality disorders, focusing in particular on integrated assessment strategies. The general strategy recommended herein is to first administer a self-report inventory to alert oneself to the potential presence of particular maladaptive personality traits followed by a semistructured interview to verify their presence. This strategy is guided by the existing research that suggests particular strengths of self-report inventories and semistructured interviews relative to unstructured clinical interviews. However, the authors also consider research that suggests that further improvements to the existing instruments can be made. The authors emphasize, in particular, a consideration of age of onset, distortions in self-perception and presentation, gender bias, culture and ethnicity, and personality change.     

A Five-Factor Measure of Avoidant Personality: The FFAvA

A new self-report assessment of the basic traits of avoidant personality disorder (AVD) was developed using a general trait model of personality (Five-factor model; FFM) as a framework. Scales were written to assess maladaptive variants of 10 FFM traits found to be robustly related to AVD across a variety of methods. In a sample of 291 undergraduates, the scales from the Five Factor Avoidant Assessment (FFAvA) proved to be internally consistent and strongly related to the original FFM scales from which they were derived. The FFAvA scales also demonstrated substantial incremental validity in the prediction of existing AVD measures and indexes of social discomfort over their FFM counterparts. The FFAvA provides an opportunity to examine AVD and its correlates using smaller, more basic units of personality rather than more global symptoms that might blend these elements.     

Personality, interpersonal circumplex, and DSM-5: A commentary on five studies

Much of personality is interpersonal, and what is interpersonal can be elegantly organized through the crossing of 2 fundamental dimensions of personality: agency and communion. The interpersonal circumplex has enriched substantially what is known about personality and in particular personality disorder, emphasizing to clinicians the importance of considering maladaptive interpersonal functioning when conducting clinical assessments. The purpose of this article is to provide a commentary on 5 articles concerning the interpersonal perspective on personality assessment. The contributions of these 5 studies are also understood relative to the proposed revisions to the American Psychiatric Association's personality disorder nomenclature, as the proposed revisions will be cutting out half of the interpersonal circumplex from further recognition.