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Latent-Class Item Response Models 2PL

Author(s):
Haberman, Shelby J.
Publication Year:
2005
Report Number:
RR-05-28
Source:
ETS Research Report
Document Type:
Report
Page Count:
7
Subject/Key Words:
Log Penalty, Rasch Model, 2-Parameter Logistic (2PL) Model, Latent Class Models, Item Response Models

Abstract

Latent-class item response models with small numbers of latent classes are quite competitive in terms of model fit to corresponding item-response models, at least for one- and two-parameter logistic (1PL and 2PL) models. Provided that care is taken in terms of computational procedures and in terms of use of only limited numbers of latent classes, computations are relatively simple in the case of latent classes.

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