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Peer reviewedDoolittle, Allen E.; Cleary, T. Anne – Journal of Educational Measurement, 1987
Eight randomly equivalent samples of high school seniors were each given a unique form of the ACT Assessment Mathematics Usage Test (ACTM). Signed measures of differential item performance (DIP) were obtained for each item in the eight ACTM forms. DIP estimates were analyzed and a significant item category effect was found. (Author/LMO)
Descriptors: Analysis of Variance, College Entrance Examinations, Discriminant Analysis, High School Seniors
Download full textDoolittle, Allen E. – 1986
A procedure for the detection of differential item performance (DIP) is used to investigate the relationships between characteristics of mathematics achievement items and gender differences in performance. Eight randomly equivalent samples of high school seniors were each given a unique form of the ACT Assessment Mathematics Usage Test (ACTM).…
Descriptors: Academic Achievement, Achievement Tests, Analysis of Variance, Estimation (Mathematics)
