Many scales contain both positively and negatively worded items. Reverse recoding of negatively worded items might not be enough for them to function as positively worded items do. In this study, we commented on the drawbacks of existing approaches to wording effect in mixed-format scales and used bi-factor item response theory (IRT) models to…

How to compute and report subscores for a test that was originally designed for reporting scores on a unidimensional scale has been a topic of interest in recent years. In the research reported here, we describe an application of multidimensional item response theory to identify a subscore structure in a test designed for reporting results using a…

This paper investigates the determinants of student attendance of economics classes. Course-specific and individual-specific factors are shown to have significant impacts on class attendance. It was found that female students and overseas students skip classes less often. Surprisingly, students involved in extra-curricular activities attend…