CONSTRUCT VALIDITY ANALYSIS OF SELECTED VARIABLE INDICATORS RELATED TO VOCATIONAL EDUCATION

Abstract

This research aimed to 1) study the selected variables related to vocational education, and 2) analyze the construct validity of selected variable indicators related to vocational education. Population was vocational students of Central Vocational Education Institute Area 1. The sample, collected using stratified random sampling, was consisted of 540 vocational students. The research instrument used for collecting data was a 25-items Likert’s five-point scale questionnaire. The questionnaire included five selected variables: student’s attitude, family socioeconomic, parents’ precedence to education, school education management, and school environment. The research instrument reliability was 0.731, 0.735, 0.731, 0.828, and 0.616, respectively. The data was analyzed by Confirmatory Factor Analysis: CFA. The research revealed that mean of variables were between 3.11-4.42 and all variables determined the construct validity which related to the empirical data. The variables were analyzed as followed: 1) the student’s attitude model showed = 5.85, df = 5, p-value = 0.321, RMSEA = 0.019, GFI = 1.00, AGFI = 0.99, RMR = 0.019, NFI = 0.99; 2) the family socioeconomic model showed = 6.52, df = 5, p-value = 0.258, RMSEA = 0.025, GFI = 0.99, AGFI = 0.98, RMR = 0.027, NFI = 0.99; 3) the parents precedence to the education model showed = 7.72, df = 5, p-value = 0.172, RMSEA = 0.034, GFI = 0.99, AGFI = 0.98, RMR = 0.018, NFI = 0.99; 4) the school education management model showed = 3.36, df = 5, p-value = 0.645, RMSEA = 0.000, GFI = 1.00, AGFI = 0.99, RMR = 0.011, NFI = 1.00; and 5) school environment model showed = 6.57, df = 5, p-value = 0.254, RMSEA = 0.026, GFI = 0.99, AGFI = 0.98, RMR = 0.017, NFI = 1.00.