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Direct linkCho, Sun-Joo; Bottge, Brian A.; Cohen, Allan S.; Kim, Seock-Ho – Journal of Special Education, 2011
Current methods for detecting growth of students' problem-solving skills in math focus mainly on analyzing changes in test scores. Score-level analysis, however, may fail to reflect subtle changes that might be evident at the item level. This article demonstrates a method for studying item-level changes using data from a multiwave experiment with…
Descriptors: Test Bias, Group Membership, Mathematics Skills, Ability
