COVID-19 greatly increased the online delivery of higher education. But one limitation of online learning is that students often struggle to stay engaged while watching online lectures. We examined whether including an instructor's face in lecture videos (instructor visibility) enhances student engagement or learning. In two preregistered…

The COVID-19 pandemic produced a unique opportunity to examine undergraduate students' notetaking practices for online courses. In this large survey study (n = 584), we examined how students' notetaking changed from before to during emergency online instruction and how students used their notes during this time. Our findings suggest that students…

We presented participants with lecture videos at different speeds and tested immediate and delayed (1 week) comprehension. Results revealed minimal costs incurred by increasing video speed from 1x to 1.5x, or 2x speed, but performance declined beyond 2x speed. We also compared learning outcomes after watching videos once at 1x or twice at 2x…

Explaining after pauses in a video lecture can be an effective learning activity, yet students need support to generate comprehensive explanations. This study tested whether providing students access to the visualizations from the video enhances explanation comprehensiveness and transfer performance. Undergraduates (n = 112) watched a 5-part…