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Open AccessArticle

Psychometric Properties, Factor Structure, and Evidence for Measurement Invariance in the Greek Version of the Disgust Scale-Revised (DS-R)

1
1st Department of Psychiatry, Athens University Medical School, “Eginiton” Hospital Athens Greece, 74 Vas.Sophias Avenue, 11528 Athens, Greece
2
Psychometrics & Measurement Lab, Department of Biostatistics and Health Informatics, Institute of Psychiatry, Psychology & Neuroscience, King’s College London, De Crespigny Park, London SE5 8AF, UK
*
Author to whom correspondence should be addressed.
Diseases 2019, 7(2), 33; https://doi.org/10.3390/diseases7020033
Received: 10 February 2019 / Revised: 27 March 2019 / Accepted: 1 April 2019 / Published: 3 April 2019
(This article belongs to the Special Issue Neuro-psychiatric Disorders - from Diagnosis to Care)
The Disgust Scale has been designed to measure disgust propensity—the individual ease in experiencing disgust. The present study aimed to explore the validity, reliability, the factor structure, and the measurement invariance of the Greek version of the Disgust Scale-Revised (DS-R). A sample of 754 healthy participants completed the Greek version of the DS-R. A subset (n = 363) also completed the revised Symptom checked list and the Eysenck Personality Questionnaire, in order to examine the concurrent validity. Exploratory and Confirmatory factor analyses in different subsets were used to examine the factor structure. Multiple indicators–multiple causes model (MIMIC) models were used to assess the measurement invariance across gender and age. Demographic influences were assessed using t-tests, ANOVA, and Pearson’s correlations. Exploratory factor analysis concluded to two and three factor models, with a factor structure similar to the ones proposed in the literature. Confirmatory factor analysis and bi-factor analysis provided evidence in favor of the three-factor solution. Measurement invariance test revealed differences in six items across gender, and three items across age. The psychometric properties of the factors were satisfactory. Demographic influences on the responses were present, especially with respect to gender. The Greek version of the DS-R demonstrated satisfactory psychometric properties, making it suitable for use for the Greek population. View Full-Text
Keywords: disgust propensity; reliability; validity; bi-factor models; measurement invariance; psychometrics disgust propensity; reliability; validity; bi-factor models; measurement invariance; psychometrics
MDPI and ACS Style

Chalimourdas, T.; Vitoratou, S.; Matsouka, E.; Owens, D.A.; Kalogeraki, L.; Mourikis, I.; Vaidakis, N.; Tzinieri-Kokkosi, M.; Pehlivanidis, A.; Papageorgiou, C. Psychometric Properties, Factor Structure, and Evidence for Measurement Invariance in the Greek Version of the Disgust Scale-Revised (DS-R). Diseases 2019, 7, 33.

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