Development of the scrupulosity inventory: A factor analysis and construct validity study.

Autor: Miller CH; California State University, Department of Psychology, Fresno, CA 93619, USA. Electronic address: chmiller@csufresno.edu., Hedges DW; Brigham Young University, Department of Psychology, Provo, UT 84604, USA. Electronic address: dawson_hedges@byu.edu., Brown B; Brigham Young University, Department of Psychology, Provo, UT 84604, USA. Electronic address: bruce_brown@byu.edu., Olsen J; Brigham Young University, Department of Psychology, Provo, UT 84604, USA. Electronic address: joseph_olsen@byu.edu., Baughan EC; Brigham Young University, Department of Psychology, Provo, UT 84604, USA. Electronic address: elibaughan@gmail.com.
Jazyk: angličtina
Zdroj: Journal of behavior therapy and experimental psychiatry [J Behav Ther Exp Psychiatry] 2024 Jun; Vol. 83, pp. 101926. Date of Electronic Publication: 2023 Dec 03.
DOI: 10.1016/j.jbtep.2023.101926
Abstrakt: Background and Objectives: Scrupulosity, despite its considerable prevalence and morbidity, remains under-investigated. The present study develops and examines the psychometric properties of a comprehensive assessment tool, the Scrupulosity Inventory (SI).
Methods: The SI, along with other measures of obsessive-compulsive disorder (OCD) and perfectionism, were administered to a sample (N = 150) of college undergraduates similar in size to other scale development studies of related measures. We conducted exploratory and confirmatory factor analyses of the SI, examined its convergent and divergent validity, and assessed its ability to predict categorical diagnoses of scrupulosity using a receiver operator characteristic analysis.
Results: We found a well-fitting confirmatory bifactor model (RMSEA = 0.049) with a strong general Scrupulosity factor ( [Formula: see text] ) and specific factors for Personal Violations ( [Formula: see text] ), Ritualized Behavior ( [Formula: see text] ), Interference with Life ( [Formula: see text] ), and Problem Pervasiveness ( [Formula: see text] ). As predicted, we also found the strongest convergence (r = 0.63) between the SI and the Penn Inventory of Scrupulosity (PIOS), intermediate convergence (r = 0.54) between the SI and Perfectionism Inventory (PI), and weaker convergence (r = 0.47) between the SI and YBOCS. Finally, we found that a categorical diagnosis of scrupulosity was highly predicted by the SI (AUC = 0.84), less well-predicted by the PIOS (AUC = 0.75) and less well predicted by the YBOCS (AUC = 0.69).
Limitations: This study was conducted among a sample of undergraduates at a religiously affiliated university.
Conclusions: These results suggest utility in using the SI to measure the severity of scrupulosity symptoms and that scrupulosity and OCD may present significantly different clinical features.
Competing Interests: Declaration of competing interest All authors report no competing interests and no funding for this project.
(Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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