Measurement equivalence between genders of the quality of academic life scale among university students in the item response theory

The research aims to verify the assumptions of the item response theory for data derived from students' responses to the Academic Quality of Life scale. The research also aimed to verify the existence of items with a differential function between the sexes in the sub-factors of the Academic Quality of Life scale in light of the discrimination parameters, in addition to verifying the existence of items with a differential function between the sexes in the sub-factors of the Academic Quality of Life scale in light of the information function. To verify these objectives, the research generated (52) items to measure the academic quality of life and applied to a random sample of undergraduate students amounting to (428) male and female students the validity of the scale was verified, and its items were analyzed according to the graded response model, and its stability was verified. Then compared the information function of the items of each of the seven factors extracted from the Exploratory factor analysis for the male and female groups separately and the two groups together, and after deleting vocabulary with a distinct function concluded that there were (32) items resulting from the equivalence of measurement between the male and female groups