title: Psychometric Properties of the Persian Version of the Padua Inventory: Washington State University Revision (PI-WSUR).
abstract: OBJECTIVE
  The psychometric properties and factor structure of the Persian Padua Inventory Washington State University Revision (PI-WSUR), a measure of obsessive- compulsive phenomena, was examined in a non-clinical sample of 348 Iranian university students.
  
  
  METHODS
  The PI-WSUR was translated into Persian, and its back translation was controlled by the author inventory. A pilot study based on cultural differences was carried out on twenty students. The study subjects consisted of 348 university students, and they completed PPI, OCI-R, MOCI, BAI, STAI, BDI-II and the demographic inventory.
  
  
  RESULTS
  The factor analysis of the PI-WSUR, exhibited eight factors similar but not identical with factor structure in previous studies. as the eight factors are as follows: contamination obsessions; washing compulsions; ordering compulsions; checking compulsions; obsessional thoughts to harm self/others; obsessional thoughts about violence; obsessional impulses to harm self/others; and obsessional impulses to steal. The result also indicated excellent internal consistency (Cronbach alpha= 0.92), Spearman split test (0.95) and test- retest (r= 0.77). We assessed the concurrent validity of the PPI in relation to the Obsessive Compulsive Inventory-Revised (OCI-R), and the Maudsley Obsessive- Compulsive Inventory (MOCI).
  
  
  CONCLUSIONS
  The Iranian version of the PI to some extend remains the sound psychometric properties of the original version.
authors.affiliation: Department of Psychiatry, Tehran University of Medical Sciences, Tehran, Iran.
authors.forename: Giti
authors.initials: G
authors.lastname: Shams
authors.forename: Hosein
authors.initials: H
authors.lastname: Kaviani
authors.forename: Yaghob
authors.initials: Y
authors.lastname: Esmaili
authors.forename: Narges
authors.initials: N
authors.lastname: Ebrahimkhani
authors.forename: Alireza Amin
authors.initials: AA
authors.lastname: Manesh