Fallacy of differential item functioning assessment under cognitive diagnostic models

Xue Lan QIU, Wen Chung WANG

Research output: Contribution to conferencePapers

Abstract

Existing studies manipulated DIF under the CDM framework as having different slip and/or guessing parameters, but an identical Q-matrix, across groups of examinees. This study clarifies such a fallacy on DIF manipulation and proposes a new method for DIF assessment. Simulation results reveal the superiority of the new method.
Original languageEnglish
Publication statusPublished - Apr 2017

Citation

Qiu, X.-L., & Wang, W.-C. (2017, April). Fallacy of differential item functioning assessment under cognitive diagnostic models. Paper presented at the National Council on Measurement in Education (NCME) 2017 Annual Meeting: Advancing Large Scale and Classroom Assessment through Research and Practice, San Antonio Marriott Rivercenter, San Antonio, TX.

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