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Use of Three-Parameter Item Response Theory in the Development of CTBS, Form U, and TCS.

Yen, Wendy M. – 1982

The three-parameter logistic model discussed was used by CTB/McGraw-Hill in the development of the Comprehensive Tests of Basic Skills, Form U (CTBS/U) and the Test of Cognitive Skills (TCS), published in the fall of 1981. The development, standardization, and scoring of the tests are described, particularly as these procedures were influenced by…

Descriptors: Achievement Tests, Bayesian Statistics, Cognitive Processes, Data Collection

Item Response Theory Equating Using Bayesian Informative Priors.

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de la Torre, Jimmy; Patz, Richard J. – 2001

This paper seeks to extend the application of Markov chain Monte Carlo (MCMC) methods in item response theory (IRT) to include the estimation of equating relationships along with the estimation of test item parameters. A method is proposed that incorporates estimation of the equating relationship in the item calibration phase. Item parameters from…

Descriptors: Achievement Tests, Bayesian Statistics, Equated Scores, Estimation (Mathematics)