TPM-TESTING PSYCHOMETRICS METHODOLOGY IN APPLIED PSYCHOLOGY, sa.3, ss.285-301, 2024 (ESCI)
In this study, the effectiveness of the person-fit statistics (l(z)(p)) 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 (l(z)(p)), person discriminal dispersion parameter, and person reliability parameter might reflect traitedness. In addition, the person reliability parameter was observed to reflect traitedness the most.