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Validation of the Three-Item Screener for Personality Disorders From the Inventory of Interpersonal Problems (IIP-3).

Authors
  • Pilkonis, Paul A1
  • Johnston, Kelly L1
  • Dodds, Nathan E1
  • 1 Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.
Type
Published Article
Journal
Journal of personality disorders
Publication Date
Oct 01, 2021
Volume
35
Issue
5
Pages
750–763
Identifiers
DOI: 10.1521/pedi_2020_34_499
PMID: 33779285
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

We previously developed a three-item screener for identifying respondents with any personality disorder (PD) using the Inventory of Interpersonal Problems (IIP). The current goal was to examine the convergent validity of the IIP-3 with other PD screeners and diagnostic tools and to investigate its relationship to measures of adult attachment and emotion regulation. The sample consisted of participants from five studies (total N = 852), with data from collateral informants available for a subsample (N = 353). Despite its brevity, the IIP-3 showed moderate to strong relationships with other longer PD screeners, with PD symptom scores from the Structured Interview for DSM-IV Personality (SIDP-IV), and with a global rating of PD severity. It was most sensitive to the stylistic aspects of PD typical of the traditional DSM cluster B (dramatic, expressive) PDs. These results emerged with data from both participants and informants, although correlations using informant data were generally smaller.

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