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Download full textGelin, Michaela N.; Zumbo, Bruno D. – 2003
This study introduced and demonstrated a new methodology for item and test bias studies: moderated differential item functioning (DIF). This technique expands the DIF methodology to incorporate contextual and sociological variables as moderating effects of the DIF. The study explored differential domain functioning (DDF), so that the focus of…
Descriptors: Community Influence, Context Effect, Ecological Factors, Educational Sociology
