Testing the fit of finite mixture models is a difficult task, since asymptotic results on the distribution of likelihood ratio statistics do not hold; for this reason, alternative statistics are needed. This paper applies the pi* goodness of fit statistic to finite mixture item response models. The pi* statistic assumes that the population is composed of… (More)

@article{Revuelta2008EstimatingTP,
title={Estimating the pi* goodness of fit index for finite mixtures of item response models.},
author={J Manuel Revuelta},
journal={The British journal of mathematical and statistical psychology},
year={2008},
volume={61 Pt 1},
pages={93-113}
}