Construct-irrelevant variance is considered as a major threat to validity which indicates the existence of additional unrelated variables that distort the meaning of test scores and cause the test to be biased. Differential item functioning (DIF) analysis is an important technique in examining the validity and fairness of educational tests.…

This research uses Rasch model analysis to identify the reliability and separation index of an integrated mathematics test instrument with a cultural architecture structure in measuring students' mathematical thinking abilities. The study involved 357 students from six eighth-grade public junior high schools in Bima. The selection of schools was…

This study delineated procedures for cross-cultural adaptation and operationalization of adaptive behavior in individuals with mental retardation, culturally adapted the Vineland Adaptive Behavior Scale, and investigated the validity of the resulting instrument. The study concluded that the domain of adaptive behavior can be successfully applied…

Whether the construct of adaptive behavior, which has been developed and operationalized in western countries, could be successfully operationalized in a non-western country, Indonesia, was studied. Focus was on delineating procedures for cross-cultural adaptation and operationalization of the construct; creating an operationalization of the…