Psychometric properties of the Revised Obsessive Intrusion Inventory

Document Type : Research Paper

Authors

1 Ph. D. student of clinical psychology, Department of Clinical Psychology, Faculty of Psychology and Education, Shiraz University, Shiraz, Iran.

2 Professor, Department of Clinical Psychology, Faculty of Psychology and Education, Shiraz University, Shiraz, Iran.

3 Assistant professor, Department of Clinical Psychology, Faculty of Psychology and Education, Shiraz University, Shiraz, Iran.

4 Associate professor of psychiatry, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.

10.22038/JFMH.2024.80990.3142

Abstract

Introduction: Obsessive-Compulsive Disorder (OCD) is a clinically diverse condition. To enhance the understanding and treatment of patients, the symptomatology of OCD has been organized into more homogeneous symptom dimensions. Therefore, we aimed to assess the psychometric properties of the Obsessive Intrusive Thoughts Inventory.
 
Materials and Methods: The research included two groups: a community sample (n= 995) and a clinical group of OCD patients (n= 128), which were selected by convenience sampling method in different regions of Mashhad, Iran in 2023. The participants completed the Revised Obsessive Intrusion Inventory (ROII) and Obsession Compulsion Inventory-18 (OCI-18). We analyzed the data using descriptive statistics, correlation coefficients, exploratory factor analysis, and confirmatory factor analysis through SPSS-22 and AMOS-24.
 
Results: Exploratory factor analysis indicated the presence of six first-order factors, which are grouped into two second-order factors. One factor includes aggressive, sexual, immoral, and impulsive intrusive thoughts, while the other encompasses contamination, doubts, and mistakes. The two-factor model had appropriate fit indices, and Revised Obsessive Intrusion Inventory had criterion and concurrent validity.
 
Conclusion: Based on the findings, the Revised Obsessive Intrusion Inventory demonstrates strong validity and reliability and can effectively assess intrusive obsessive thoughts in patients with obsessive-compulsive disorder and normal people.

Keywords

References

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Journal of Fundamentals of Mental Health
Volume 27, Issue 1
January and February 2025
Pages 49-57

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