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An Equipercentile Version of the Levine Linear Observed-Score Equating Function Using the Methods of Kernel Equating KE NEAT PE

Author(s):
von Davier, Alina A.; Fournier-Zajac, Stephanie; Holland, Paul W.
Publication Year:
2007
Report Number:
RR-07-14
Source:
ETS Research Report
Document Type:
Report
Page Count:
19
Subject/Key Words:
Linear Equating Method, Kernel Equating (KE), Non-Equivalent-Groups Anchor Test (NEAT) Design, Anchor Tests, Poststratification Equating (PE)

Abstract

An easily computed approximation to the resulting PSE-Levine equipercentile equating function is illustrated on data from a special study and compared to the results from the traditional equating functions. The special data set includes a criterion equating function, and the closeness of the PSE-Levine function to this criterion indicates that such hybrid equating functions may be useful in practice.

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