Factor Structure, Validity and Reliability of the Revised Version of Skin Picking Scale

AUTHORS

Fatemeh Bahrami 1 , Kariem Asgari 2 , Mehrdad Kalantari 3 , Mehdi Rabiei 4 , *

AUTHORS INFORMATION

1 Department of Counseling, University of Isfahan, Isfahan, Iran

2 Department of Psychology, University of Isfahan, Isfahan, Andorra

3 Department of Psychology, University of Isfahan, Isfahan, Iran

4 Department of Clinical Psychology, Baqiyatallah University of Medical Sciences, Tehran, Iran

ARTICLE INFORMATION

Zahedan Journal of Research in Medical Sciences: 16 (9)
Published Online: March 10, 2013
Article Type: Research Article
Received: November 13, 2012
Accepted: December 12, 2012

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Abstract

Background: The purpose of this study was to examine the factor structure, validity and reliability of the Skin Picking Scale-Revised Version.

Materials and Methods: In this descriptive and validation study, participants were 550 (250 male and 300 female) of the University of Isfahan were selected randomly from 15000 students. In order to examine the factor structure of the SPS-R we conducted both exploratory and confirmatory factor analyses and Cronbach's alpha.

Results: Convergent validity of SPS-R with YBOCS-BDD, OCI-R and DASS 21-item were r=0.45, r=0.51 and r=0.70 (p<0.001). Exploratory and confirmatory factor analyses revealed two factors, one assessing impairment and the other symptom severity (4 items each). These factors could determine 58.1% of the variance. The Cronbach's alpha for the two factors were above 0.88. Also, results were shown to possess good psychometric properties, as well as discriminant validity and classification accuracy, in both clinical and community populations.

Conclusions: It can be concluded that this instrument is a useful measure for assess skin-picking disorder symptoms in clinical assessment.

Keywords

Skin Picking Disorder SPS-R Assessment Factor Analysis

© 0, Zahedan Journal of Research in Medical Sciences. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.
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