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Recently, multistage testing (MST) has been adopted by several important large-scale testing programs and become popular among practitioners and researchers. Stemming from the decades of history of computerized adaptive testing (CAT), the rapidly growing MST alleviates several major problems of...
The use of mixture item response theory modeling is exemplified typically by comparing item profiles across different latent groups. The comparisons of item profiles presuppose that all model parameter estimates across latent classes are on a common scale. This note discusses the conditions and...
A software review was conducted for BMIRT (Bayesian Multivariate IRT) that implements a variety of multidimensional models using Markov chain Monte Carlo (MCMC) methods. The review describes its basic functionality, implementation of the program, and the operating environment.
The non-compensatory class of multidimensional item response theory (MIRT) models frequently represents the cognitive processes underlying a series of test items better than the compensatory class of MIRT models. Nevertheless, few researchers have used non-compensatory MIRT in modeling...
This article analyzes data from U.S. Navy sailors (N = 8,956), with the central measure being the Navy Computer Adaptive Personality Scales (NCAPS). Analyses and results from this article extend and qualify those from previous research efforts by examining the properties of the NCAPS and its...
In differential item functioning (DIF) analysis, a common metric is necessary to compare item parameters between groups of test-takers. In the Rasch model, the same restriction is placed on the item parameters in each group to define a common metric. However, the question how the items in the...
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