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Measurement properties of the system justification scale: a Rasch analysis
Department of Psychology, University of Torino, Torino TO, Italy .
Department of Psychology, University of Torino, Torino TO, Italy .
Department of Psychology, University of Torino, Torino TO, Italy .
Örebro University, School of Law, Psychology and Social Work. (Youth & Society)ORCID iD: 0000-0001-5214-9921
2014 (English)In: TPM - Testing, Psychometrics, Methodology in Applied Psychology, ISSN 1972-6325, Vol. 21, no 4, p. 467-478Article in journal (Refereed) Published
Abstract [en]

In the present study, we analyzed the measurement properties of the general version of the System Justification Scale in Italy using the Partial Credit Model with a sample of 544 youths (182 males, Mage = 17.47, SD = 1.59). The scale was unidimensional and showed acceptable measurement properties. However, its format should be reduced from seven to four categories. Moreover, the scale was able to discriminate people with intermediate system justification scores, while it did not discriminate those with extreme scores. Directions for future research are discussed in light of the present findings.

Place, publisher, year, edition, pages
2014. Vol. 21, no 4, p. 467-478
Keywords [en]
Partial Credit Model; Political psychology; Rasch model; System justification; System Justification Scale
National Category
Psychology
Research subject
Psychology
Identifiers
URN: urn:nbn:se:oru:diva-42071DOI: 10.4473/TPM21.4.7Scopus ID: 2-s2.0-84918781606OAI: oai:DiVA.org:oru-42071DiVA, id: diva2:781903
Available from: 2015-01-19 Created: 2015-01-19 Last updated: 2018-06-15Bibliographically approved

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Russo, Silvia

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