title: DSM-IV schizotypal personality disorder: a taxometric analysis among individuals with and without substance use disorders in the general population.
abstract: This study examined the underlying structure of DSM-IV schizotypal personality disorder (SPD) among individuals with and without a substance use disorder. Using a nationally representative sample of U.S. adults, taxometric analyses were conducted on SPD in the total sample and among individuals with and without a substance use disorder. The structure of SPD in the total sample and among individuals without substance use disorders was dimensional (comparison curve fit indices (CCFI): 0.440, 0.365) whereas a taxonic structure was demonstrated among individuals with a substance use disorder (CCFI: 0.679). Taxonicity underlying schizotypy and SPD in prior taxometric research may have been the result of sampling high risk subsamples of the population. Taxometric research on SPD and other personality psychopathology among high risk subgroups of the population can help elucidate the complex etiology of SPD and the role played by comorbid substance use disorders in the expressivity of these disorders.
authors: Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168 Street, New York, NY, 10032.
authors: Bradley T
authors: BT
authors: Kerridge
authors: Laboratory of Epidemiology and Biometry, Intramural Division of Clinical and Biological Research, National Institutes on Alcohol Abuse and Alcoholism, National Institutes of Health, 5636 Fishers Lane, Rockville, Maryland, 20852.
authors: Tulshi D
authors: TD
authors: Saha
authors: Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 West 168 Street, New York, NY, 10032 ; Department of Psychiatry College of Physicians and Surgeons, Columbia University, New York, New York, 10032.
authors: Deborah S
authors: DS
authors: Hasin
keywords: Schizotypal personality disorder; personality disorders; structural analyses; substance use disorders; taxometric analyses