Item difficulty and dimensionality often correlate, implying that unidimensional IRT approximations to multidimensional data (i.e., reference composites) can take a curvilinear form in the multidimensional space. Although this issue has been previously discussed in the context of vertical scaling applications, we illustrate how such a phenomenon…

Background/purpose: This study aimed to reveal the accuracy of estimation of multiple-choice test items parameters following the models of the item-response theory in measurement. Materials/methods: The researchers depended on the measurement accuracy indicators, which express the absolute difference between the estimated and actual values of the…

This qualitative descriptive study investigated the experiences and professional outcomes of novice registered nurses participating in professional development nursing simulations integrating worked examples, a cognitive load instructional design principle. Drawing upon cognitive load theory and the worked examples principle, the study addressed…

The overall aim was to examine effects of differences in group ability and features of the anchor test form on equating bias and the standard error of equating (SEE) using both real and simulated data. Chained kernel equating, Postratification kernel equating, and Circle-arc equating were studied. A college admissions test with four different…

Background: Research in social cognition suggests that learning effectiveness in teacher-learner pairs may be influenced by how well their attention aligns with each other. However, we currently have limited understanding of how common distractions in real-world environments affect teacher-student interactions, specifically the synchronisation of…

This study reports an investigative study with 55 English-major participants in a Chinese university about using simulation in business English correspondence teaching. The study found that participants had strong needs in practical skills development and learning business English correspondence writing. The simulation approach was perceived to be…