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

Fatemeh Bahrami; Kariem Asgari; Mehrdad Kalantari; Mehdi  Rabiei

Zahedan Journal of Research in Medical Sciences

The Official Journal of Zahedan University of Medical Sciences

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

Author(s):

Fatemeh Bahrami¹,

Kariem Asgari²,

Mehrdad Kalantari³,

Mehdi Rabiei^4,*

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

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

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

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

Zahedan Journal of Research in Medical Sciences:Vol. 16, issue 9

Published online:Mar 10, 2013

Article type:Research Article

Received:Nov 13, 2012

Accepted:Dec 12, 2012

How to Cite: Fatemeh Bahrami Kariem Asgari Mehrdad KalantariMehdi RabieiFactor Structure, Validity and Reliability of the Revised Version of Skin Picking Scale.Zahedan J Res Med Sci.16(9):null-null.

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

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