Recursive IRT-based Reliability Estimation

• In Event: Reliability Estimation

Abstract

IRT-based reliabilities are traditionally estimated from theoretical assumptions. This proposal considers alternatives obtained through modifications of the Lord-Wingersky recursion algorithm, that more directly reflect observed scores and distributions, and sampling errors. The proposed method is evaluated over common IRT models and several large-volume tests. Additional applications will also be described.

Authors

• Tim Moses, BUROS CENTER FOR TESTING - UNI

• YoungKoung Kim, COLLEGE BOARD