CATSIB: A Modified SIBTEST Procedure to Detect Differential Item Functioning in Computerized Adaptive Tests |
Common terms and phrases
2Trr ability estimates ability level Ability Means d adaptively administered amount of DIF CATSIB WORC computerized adaptive tests DIF estimation Difference in Group differential item functioning error inflation error rates error study estimate ẞ estimated true score estimation bias F groups F test focal group Group Ability Means group G group test takers high discrimination hypothesis test impact level item parameters item response Law School Admission levels of impact matches test takers matching criterion minimum number null hypothesis number of ability number of cells number of intervals number of test operational items paper-and-pencil tests parameters of items performance of CATSIB power rates pretest items reference group Reference/Focal Groups 250/250 regression correction rejection rate results right-tailed Roussos sample size sample sizes School Admission Council simulated test taker simulation study Sizes for Reference/Focal Standard Deviation Difference standard error statistic calculation subgroups Table Tailed Tailed Tailed two-tailed test Type I error value of estimated