Incremental validity of the Structured Interview for the Five-Factor Model of Personality (SIFFM)
Article first published online: 22 JUN 2005
Copyright © 2005 John Wiley & Sons, Ltd.
European Journal of Personality
Special Issue: Personality and Personality Disorders
Volume 19, Issue 4, pages 343–357, June 2005
How to Cite
Stepp, S. D., Trull, T. J., Burr, R. M., Wolfenstein, M. and Vieth, A. Z. (2005), Incremental validity of the Structured Interview for the Five-Factor Model of Personality (SIFFM). Eur. J. Pers., 19: 343–357. doi: 10.1002/per.565
- Issue published online: 22 JUN 2005
- Article first published online: 22 JUN 2005
- Manuscript Accepted: 30 MAR 2005
- Manuscript Received: 7 JAN 2005
- National Institute of Mental Health. Grant Number: MH52695
This study examined the incremental validity of the Structured Interview for the Five-Factor Model (SIFFM; Trull & Widiger, 1997) scores in the prediction of borderline, antisocial, and histrionic personality disorder symptoms above and beyond variance accounted for by scores from the Schedule for Nonadaptive and Adaptive Personality (SNAP; Clark, 1993), a self-report questionnaire that includes items relevant to both normal (i.e. Big Three) and abnormal personality traits. Approximately 200 participants (52 clinical outpatients, and 149 nonclinical individuals from a borderline-features-enriched sample) completed the SIFFM, the SNAP, and select sections of the Personality Disorder Interview—IV (PDI-IV; Widiger, Mangine, Corbitt, Ellis, & Thomas, 1995). We found support for the incremental validity of SIFFM scores, further indicating the clinical utility of this instrument. However, results also supported the incremental validity of SNAP scores in many cases. We discuss the implications of the findings in terms of dimensional approaches to personality disorder assessment. Copyright © 2005 John Wiley & Sons, Ltd.