Andersen (1995, 2002) proves a theorem relating variances of parameter estimates from samples and subsamples and shows its use as an adjunct to standard statistical analyses. The authors show an application where the theorem is central to the hypothesis tested, namely, whether random guessing to...

Despite the growing influence of international surveys of student achievements such as PISA, TIMSS, and PIRLS on policy, there is currently no international baseline study of children’s development on starting school. As a result, nobody knows for sure the extent to which the differences in...

The theoretical probability of misclassification in a mastery test is exactly computed using the raw score probability distribution (in the Rasch model) as a function of the examinee’s latent ability. The resulting misclassification probability curve, together with the latent ability...

A new diagnostic tool for the identification of differential item functioning (DIF) is proposed. Classical approaches to DIF allow to consider only few subpopulations like ethnic groups when investigating if the solution of items depends on the membership to a subpopulation. We propose an...

Purpose – The purpose of this paper is to evaluate firm financial success across a broad range of performance measures and identify areas of the performance spectrum for which positive results were most difficult to achieve. Simultaneously, the authors identify the firms that most frequently...

The aim of this paper is to propose a new corruption index based on individual attitudes referring to the European citizens. The index is defined by means of the person location parameters estimated by a partial credit model (PCM). This model is particularly suitable since the synthetic value of...

The axioms of additive conjoint measurement provide a means of testing the hypothesis that testing data can be placed onto a scale with equal-interval properties. However, the axioms are difficult to verify given that item responses may be subject to measurement error. A Bayesian method exists...