title: A dimensional model of personality disorder: incorporating DSM Cluster A characteristics.
abstract: The authors articulate an expanded dimensional model of personality pathology to better account for symptoms of DSM-defined Cluster A personality disorders. Two hundred forty participants (98 first-degree relatives of probands with schizophrenia or schizoaffective disorder, 92 community control participants, and 50 first-degree relatives of probands with bipolar disorder) completed a dimensional personality pathology questionnaire, a measure of schizotypal characteristics, and Chapman measures of psychosis proneness. Scales from all questionnaires were subjected to an exploratory factor analysis with varimax rotation. A 5-factor structure of personality pathology emerged from the analyses, with Peculiarity forming an additional factor to the common 4-factor structure of personality pathology (consisting of Introversion, Emotional Dysregulation, Antagonism, and Compulsivity). These results support a 5-factor dimensional model of personality pathology that better accounts for phenomena encompassed by the Cluster A personality disorders in DSM-IV-TR (4th ed., text revised; American Psychiatric Association, 2000). This study has implications for the consideration of a dimensional model of personality disorder in DSM-V by offering a more comprehensive structural model that builds on previous work in this area.
authors.affiliation: Department of Psychology, University of Toronto, Toronto, Canada. tackett@psych.utoronto.ca
authors.forename: Jennifer L
authors.initials: JL
authors.lastname: Tackett
authors.forename: Amy L
authors.initials: AL
authors.lastname: Silberschmidt
authors.forename: Robert F
authors.initials: RF
authors.lastname: Krueger
authors.forename: Scott R
authors.initials: SR
authors.lastname: Sponheim
mesh_terms: D000328:Adult; D000368:Aged; D001714:Bipolar Disorder / Q000175:diagnosis / Q000235:genetics / Q000523:psychology*; D003072:Cognition Disorders / Q000175:diagnosis / Q000235:genetics / Q000523:psychology; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015233:Models, Statistical; D010552:Personality Assessment / Q000706:statistics & numerical data*; D010554:Personality Disorders / Q000175:diagnosis / Q000235:genetics / Q000523:psychology*; D011594:Psychometrics / Q000706:statistics & numerical data; D011618:Psychotic Disorders / Q000175:diagnosis / Q000235:genetics / Q000523:psychology*; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000175:diagnosis* / Q000235:genetics; D012565:Schizophrenic Psychology; D012569:Schizotypal Personality Disorder / Q000175:diagnosis / Q000235:genetics / Q000523:psychology