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Use of Continuous Exponential Families to Link Forms via Anchor Tests

Author(s):
Haberman, Shelby J.; Yan, Duanli
Publication Year:
2011
Report Number:
RR-11-11
Source:
ETS Research Report
Document Type:
Report
Subject/Key Words:
Moments, Information Theory, Nonequivalent Groups

Abstract

Continuous exponential families are applied to linking test forms via an internal anchor. This application combines work on continuous exponential families for single-group designs and work on continuous exponential families for equivalent-group designs. Results are compared to those for kernel and equipercentile equating in the case of chained equating. The conversions produced by all methods are quite similar.

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