title: Screening for personality disorders in a nonclinical population.
abstract: Based on the Inventory of Interpersonal Problems (IIP), the IIP-PD and the IIP-C screening scales were developed to distinguish personality disorder (PD) from non-PD and Cluster C from other PD, respectively, in a clinic population. Two studies were conducted to determine (a) validity and reliability of these IIP scales for PD screening in a nonclinical population, (b) specificity of IIP-C for identifying Cluster C, and (c) usefulness of the IIP scales for screening Cluster A. College students were screened using the IIP scales (Study 1, N = 454, Study 2, N = 87). High and low scorers completed PD-related questionnaires in Study 1 and a clinical interview for PD symptomatology in Study 2. Results indicated strong test-retest reliability, internal consistency, and factorial, convergent, and external validity. The scales tapped a common deficit in interpersonal relatedness, with some distinction between externalizing and internalizing dimensions, respectively, and both scales were positively and significantly associated with schizotypal traits. In conclusion, the IIP-PD and IIP-C are useful and valid screening instruments for identifying any versus no PD in nonclinical populations.
authors.affiliation: Virginia Polytechnic Institute and State University, USA.
authors.forename: A
authors.initials: A
authors.lastname: Scarpa
authors.forename: K A
authors.initials: KA
authors.lastname: Luscher
authors.forename: K J
authors.initials: KJ
authors.lastname: Smalley
authors.forename: P A
authors.initials: PA
authors.lastname: Pilkonis
authors.forename: Y
authors.initials: Y
authors.lastname: Kim
authors.forename: W C
authors.initials: WC
authors.lastname: Williams
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D010554:Personality Disorders / Q000175:diagnosis* / Q000523:psychology; D010555:Personality Inventory; D011594:Psychometrics / Q000379:methods*; D015203:Reproducibility of Results; D012569:Schizotypal Personality Disorder / Q000523:psychology; D014481:United States