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Item Difficulty of Four Verbal Item Types and an Index of Differential Functioning for Black and White Examinees.
Peer reviewed Peer reviewed
Freedle, Roy; Kostin, Irene – Journal of Educational Measurement, 1990
The importance of item difficulty (equated delta) was explored as a predictor of differential item functioning of Black versus White examinees for 4 verbal item types using 13 Graduate Record Examination forms and 11 Scholastic Aptitude Test forms. Several significant racial differences were found. (TJH)
Descriptors: Black Students, College Bound Students, College Entrance Examinations, Comparative Testing
Using Differential Item Functioning Procedures to Explore Sources of Item Difficulty and Group Performance Characteristics.
Peer reviewed Peer reviewed
Scheuneman, Janice Dowd; Gerritz, Kalle – Journal of Educational Measurement, 1990
Differential item functioning (DIF) methodology for revealing sources of item difficulty and performance characteristics of different groups was explored. A total of 150 Scholastic Aptitude Test items and 132 Graduate Record Examination general test items were analyzed. DIF was evaluated for males and females and Blacks and Whites. (SLD)
Descriptors: Black Students, College Entrance Examinations, College Students, Comparative Testing