The purpose of this study is to illustrate the use of explanatory models based on Rasch measurement theory to detect systematic relationships between student and item characteristics and achievement differences using differential item functioning (DIF), differential group functioning (DGF), and differential person functioning (DPF) techniques. The…

With the increased focus on issues of diversity and multiculturalism in the United States and abroad, educators and clinicians have become more and more concerned about the feasibility and validity of their assessment instruments and practices for children and adults from nonWhite backgrounds. Many researchers emphasize that when working with…

A study involving the construction and administration of Black and White intelligence test forms to 386 Blacks and 386 Whites indicated that Blacks did not perform significantly better on the Black test form, suggesting differences in Black special education placement rates are not affected by underrepresentation in the test development group.…

Since elementary school counselors frequently provide or interpret achievement test scores for academic placement decisions, they must be vigilant for invalid data. Standardized norm-referenced achievement tests can underestimate achievement or potential of low-income black children because of different learning styles and test bias. Recent…