skip to main content skip to footer

The Kernel Method of Equating Score Distributions

Author(s):
Holland, Paul W.; Thayer, Dorothy T.
Publication Year:
1989
Report Number:
RR-89-07, PSRTR-89-84
Source:
ETS Research Report
Document Type:
Report
Page Count:
53
Subject/Key Words:
Equated Scores, Kernel Method, Psychometrics, Test Theory

Abstract

A new and unified approach to test equating is described that is based on log-linear models for smoothing score distributions and on the kernel method of non-parametric density estimation. The new method contains both linear and standard equipercentile methods as special cases and can handle several important equating data collection designs. An example is used to illustrate the new method for the random groups and external anchor-test designs. (53pp.)

Read More