Investigation of education value perception scale`s psychometric properties according to CTT and IRT

Authors : Harun DİLEK, Ufuk AKBAŞ

Pages : 548-564

Doi:10.21449/ijate.986530

View : 15 | Download : 7

Publication Date : 2022-09-30

Article Type : Research Paper

Abstract :The purpose of this study is to develop Education Value Perception Scale insert ignore into journalissuearticles values(EVPS); based on Bronfenbrenner`s Ecological Theory and to investigate its psychometric properties according to Classical Test Theory insert ignore into journalissuearticles values(CTT); and Item Response Theory insert ignore into journalissuearticles values(IRT);. The data were collected from 2872 secondary school students by stratified purposeful sampling method. Measurement invariance of EVPS was tested by multigroup confirmatory factor analysis based on gender, and scalar invariance was observed to have been provided. The estimations based on IRT were conducted based on Graded Response Model. While high positive correlations were found between the item discriminations estimated according to different test theories, high negative correlations were identified between item means. McDonald’s Omega was calculated to be .79 according to CTT from reliability estimation methods, marginal reliability coefficient was determined to be .77 according to IRT. In the test-retest applications performed at 20-day intervals, the stability coefficient was found to be.81.
Keywords : Education value, Bronfenbrennerss ecological theory, Measurement invariance, Classical test theory, Item Response Theory