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Current modeling of response times on test items has been influenced by the experimental paradigm of reaction-time research in psychology. For instance, some of the models have a parameter structure that was chosen to represent a speed-accuracy tradeoff, while others equate speed directly with response time. Other response-time models seem to be unclear as… (More)

A lognormal model for the response times of a person on a set of test items is investigated. The model has a parameter structure analogous to the twoparameter logistic response models in item response theory, with a parameter for the speed of each person as well as parameters for the time intensity and discriminating power of each item. It is shown how… (More)

A method of item pool design is proposed that uses an optimal blueprint for the item pool calculated from the test specifications. The blueprint is a document that specifies the attributes that the items in the computerized adaptive test (CAT) pool should have. The blueprint can be a starting point for the item writing process, and it can be used to… (More)

- HENDRIKUS KELDERMAN, Gideon J. Mellenbergh, Pieter Vijn, Wim van der Linden, Ivo W. Molenaar, Carolien Schamhardt
- 2005

Existing statistical tests for the fit of the Rasch model have been criticized, because they are only sensitive to specific violations of its assumptions. Contingency table methods using loglinear models have been used to test various psychometric models. In this paper, the assumptions of the Rasch model are discussed and the Rasch model is reformulated as… (More)

The case of adaptive testing under a multidimensional logistic response model is addressed. An adaptive algorithm is proposed that minimizes the (asymptotic) variance of the maximum-likelihood (ML) estimator of a linear combination of abilities of interest. The item selection criterion is a simple expression in closed form. In addition, it is shown how the… (More)

For assigning subjects to treatments the point of intersection of within-group regression lines is ordinarily used as the critical point. This decision rule is critized and, for several utility functions and any number of treatments, replaced by optimal monotone, nonrandomized (Bayes) rules. Both treatments with and without mastery scores are considered.… (More)

The problem of mastery decisions and optimizing cutoff scores on criterion-referenced tests is considered. This problem can be formalized as an (empirical) Bayes problem with decisions rules of a monotone shape. Next, the derivation of optimal cutoff scores for threshold, linear, and normal ogive loss functions is addressed, alternately using such… (More)

DOCUMENT RESUME TM 027 361 van der Linden, Wim J. Bayesian Item Selection Criteria for Adaptive Testing. Research Report 96-01. Twente Univ., Enschede (Netherlands). Faculty of Educational Science and Technology. 1996-10-00 32p. Faculty of Educational Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands. Reports… (More)

- Merijn de Jonge, Wim van der Linden, Rik Willems
- ICSOC
- 2007

In this paper we explore the idea that by combining different sources of information in a hospital environment, valuable e-services can be developed for reducing cost and improving quality of service. Companies, like Philips Medical Systems, may have a competitive advantage, because they have a large installed base which may provide valuable information… (More)

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