1. A Comparison of Selected Methods for Assessing the Dimensionality of Polytomous Items Open Access Author: Cheng, Weiyi Title: A Comparison of Selected Methods for Assessing the Dimensionality of Polytomous Items Graduate Program: Educational Psychology Keywords: polytomous itemdimensionality analysisMonte Carlo simulation File: Download Dissertation_Weiyi_Cheng_final.pdf Committee Members: Pui-Wa Lei, Dissertation Advisor/Co-AdvisorPui-Wa Lei, Committee Chair/Co-ChairHoi Kin Suen, Committee MemberJonna Marie Kulikowich, Committee MemberMosuk Chow, Outside Member