This note considers the problem of paradoxical results in multidimensional item response theory. This is the possibility that a deliberately incorrect response could be beneficial to an examinee. An example is created that demonstrates that, when three or more ability dimensions are considered, paradoxical results can occur for Bayesian estimates even for separable tests when all the dimensions...

This work presents a model for student knowledge diagnosis that can be used in ITSs for student model update. The diagnosis is accomplished through Computerized Adaptive Testing (CAT). CATs are assessment tools with theoretical background. They use an underlying psychometric theory, the Item Response Theory (IRT), for question selection, student knowledge estimation and test finalization. In pr...

This study addresses the relationship between item response time and item accuracy (i.e., the response time accuracy correlation, RTAC) in figural matrices tests. The dual processing account of response time effects predicts negative RTACs in tasks that allow for relatively automatic processing and positive RTACs in tasks that require controlled processing. Contrary to these predictions, severa...

Every day, huge numbers of instant tweets (messages) are published on Twitter as it is one of the massive social media for e-learners interactions. The options regarding various interesting topics to be studied are discussed among the learners and teachers through the capture of ideal sources in Twitter. The common sentiment behavior towards these topics is received through the massive number o...

CTT is best suited for traditional testing situations, either in group or individual settings, in which all the members of a target population, e.g., persons seeking college admission, are administered the same or parallel sets of test items. These item sets can be presented to the examinee in either a paper-and-pencil or a computer format. Regardless of format, it is important for the measurem...

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