A Two-Step Q-Matrix Estimation Method

• In Event: Electronic Board Session II

Abstract

The validity of cognitive diagnosis (CD) depends crucially on the correct specification of the Q-matrix. Data-driven Q-matrix estimation methods have been developed that purportedly are more accurate than curricular experts. An efficient two-step Q-matrix estimation is proposed for use with any CD model.

Authors

• Hyunjoo Kim

• Hans Friedrich Koehn

• Chia-Yi Chiu, Teachers College Columbia University