skip to main content skip to footer

A Review of Subscore Estimation Methods IRT CTT OPI MIRT

Author(s):
Fu, Jianbin; Qu, Yanxuan
Publication Year:
2018
Report Number:
RR-18-17
Source:
ETS Research Report
Document Type:
Report
Page Count:
17
Subject/Key Words:
Subscore Estimation, Regression, Item Response Theory (IRT), Classical Test Theory (CTT), Objective Performance Index (OPI), Multidimensional Item Response Theory (MIRT)

Abstract

Various subscore estimation methods that use auxiliary information to improve subscore accuracy and stability have been developed. This report provides a review of various subscore estimation methods described in the literature. The methodology of each method is described, then research studies on these subscore estimation methods are summarized. Comments on the methods and suggestions for future areas of research are provided, and preliminary guidelines for using subscore estimation methods in practice are recommended.

Read More