TY - BOOK

T1 - On the estimation of the proportion of masters in criterion-referenced testing

AU - van der Linden, Wim J.

PY - 1981

Y1 - 1981

N2 - J.A. Emrick's (1971) model is a latent class model of mastery testing that can be used to estimate the proportion of masters in a given population. A. Hamerle (1980), in a recent paper on this model, has proposed an estimator for the proportion of masters that is claimed to constitute a maximum likelihood approach. It is indicated that Hamerle is not quite correct in his presentation of Emrick's model and that his estimator is not maximum likelihood. An estimator is provided using the method of moments; this estimator appears to have the same shape as Hamerle's estimator, but should be interpreted differently since it is derived under the correct version of Emrick's model. An attractive property of the method of moments is that it also yields simple estimators for the present model if the two success parameters are unknown. It appears that these estimators can be used for tests consisting of three or more items. Results of extensive Monte Carlo studies indicate that the estimators possess excellent statistical properties.

AB - J.A. Emrick's (1971) model is a latent class model of mastery testing that can be used to estimate the proportion of masters in a given population. A. Hamerle (1980), in a recent paper on this model, has proposed an estimator for the proportion of masters that is claimed to constitute a maximum likelihood approach. It is indicated that Hamerle is not quite correct in his presentation of Emrick's model and that his estimator is not maximum likelihood. An estimator is provided using the method of moments; this estimator appears to have the same shape as Hamerle's estimator, but should be interpreted differently since it is derived under the correct version of Emrick's model. An attractive property of the method of moments is that it also yields simple estimators for the present model if the two success parameters are unknown. It appears that these estimators can be used for tests consisting of three or more items. Results of extensive Monte Carlo studies indicate that the estimators possess excellent statistical properties.

KW - Mastery tests

KW - Foreign countries

KW - Maximum likelihood statistics

KW - Criterion referenced tests

KW - Monte Carlo methods

KW - Estimation (Mathematics)

KW - Mathematical model

KW - Latent trait theory

M3 - Report

T3 - Twente Educational Memorandum

BT - On the estimation of the proportion of masters in criterion-referenced testing

PB - University of Twente

CY - Enschede, The Netherlands

ER -