Önen, E.
Assessment of traitedness: An Item Response Theory approach
In this study, the effectiveness of the person-fit statistics (lzp) based on the Graded Response Model, the person discriminal dispersion parameter, and the person reliability parameter based on Dual Thurstonian Models for graded responses, and the responder-specific discrimination parameter based on the Graded Response Differential Discrimination Model in the assessment of traitedness were comparatively investigated. Data were obtained by administering the STAI-State and STAI-Trait inventories (Spielberger et al., 1983) to undergraduates (N = 1102) attending the Education faculty of a public university in Ankara, Turkey. The results indicated that person-fit statistics (lzp), person discriminal dispersion parameter, and person reliability parameter might reflect traitedness. In addition, the person reliability parameter was observed to reflect traitedness the most.
Testing, Psychometrics, Methodology in Applied Psychology, 2024, Vol. 31, pp. 285-301, DOI: 10.4473/TPM31.3.2
