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Studies of a Latent-Class Signal-Detection Model for Constructed-Response Scoring

Author(s):
DeCarlo, Lawrence T.
Publication Year:
2008
Report Number:
RR-08-63
Source:
ETS Research Report
Document Type:
Report
Page Count:
55
Subject/Key Words:
Constructed Response, Rater Effects, Signal-Detection Theory, Latent Class Models, Classification, Agreement, Block-design tests.

Abstract

The relation of rater parameters to agreement statistics and classification accuracy is examined. The effects of using a balanced, incomplete block design are compared to those for a fully crossed design. The model is applied to several ETS databases.

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