Researchers across many fields have called for greater attention to heterogeneity of treatment effects--shifting focus from the average effect to variation in effects between different treatments, studies, or subgroups. True heterogeneity is important, but many reports of heterogeneity have proved to be false, non-replicable, or exaggerated. In…

Item response tree (IRTree) models are a flexible framework to control self-reported trait measurements for response styles. To this end, IRTree models decompose the responses to rating items into sub-decisions, which are assumed to be made on the basis of either the trait being measured or a response style, whereby the effects of such person…

Based on data from a single institution, this study estimates the effect of having a female instructor, the effects of measures of self-efficacy, and the interaction effects of measures of self-efficacy and having a female instructor on female and male student grade performance. Self-efficacy for academic achievement, self-regulated learning,…

Transactional distance (TD), the perception of psychological distance between the student and his peers, his instructor/teacher, and the learning content, has long been a prominent construct in research on distance education. Today, distance education primarily takes place over the internet, with technology mediating engagement and communication.…

Using structural equation modeling, this study attempted to untangle the underlying mechanisms among student-faculty interaction, classroom engagement, and cognitive skills development by examining the role played by students' academic self-challenge and sense of belonging on the relationships among the variables. The study utilized data from the…