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

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