A Short Note on Estimating the Testlet Model With Different Estimators in Mplus

Educational and Psychological Measurement
Yong Luo

Abstract

Mplus is a powerful latent variable modeling software program that has become an increasingly popular choice for fitting complex item response theory models. In this short note, we demonstrate that the two-parameter logistic testlet model can be estimated as a constrained bifactor model in Mplus with three estimators encompassing limited- and full-information estimation methods.

References

Apr 1, 1988·Multivariate Behavioral Research·C Fraser, R P McDonald
Jul 1, 1991·Multivariate Behavioral Research·D L Knol, M P Berger

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Software Mentioned

WinBUGS
MMLE
NOHARM
SAS
SCORIGHT
IRTPRO
IRT
ConQuest
Mplus
MIRT

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