Psychiatry Investig.  2015 Jul;12(3):288-294. 10.4306/pi.2015.12.3.288.

Psychometric Properties of a Short Korean Version of the Revised Obsessive Intrusion Inventory

• Seo JW
• Baek MJ
• Lee MS
• Jeon JR
• Kwon SM

• KMID: 2316487
• DOI: http://doi.org/10.4306/pi.2015.12.3.288

Abstract

OBJECTIVE
The Revised Obsessive Intrusion Inventory (ROII) is a 52-item scale that evaluates obsessional intrusive thoughts. The aim of the present study was to validate a short, 20-item Korean version of the ROII (ROII-20).
METHODS
Of the 1125 participants who completed the ROII-20, 895 participants completed the scale to examine the factor structure of the scale. A subgroup of these participants (n=53) completed the scale twice to determine test-retest reliability. To establish external validity, 230 participants completed the scale and other questionnaires.
RESULTS
Exploratory factor analyses suggested a hierarchical model comprising two higher order factors of autogenous obsessions (resulting from aggressive thoughts and sexual thoughts) and reactive obsessions (resulting from thoughts about contamination, thoughts about accidents, and thoughts about dirt). Confirmatory factor analyses supported this model. The results indicated good internal consistency and test-retest reliability. External validity was supported by relationships with obsessive-compulsive symptoms and general distress.
CONCLUSION
The ROII-20 presents good psychometric properties and may be considered as a promising instrument for measuring obsessional intrusions.

Keyword

Mental intrusions; Mental intrusions questionnaire; Autogenous obsessions; Reactive obsessions; Reliability; Validity

MeSH Terms

Obsessive Behavior
Psychometrics*
Surveys and Questionnaires