Abstract This study examined whether having the instructor wear a mask during a video lecture affects learning. In Experiment 1, college students watched an instructional video on the formation of lightning, in which an instructor who either did or did not wear a mask as she stood next to slides and lectured. Learners' learning outcomes did not differ significantly, but learners spent significantly less time looking at the instructor's face when she was masked. In Experiment 2, using a 2 (the instructor wore a mask or not) × 2 (slides were d...
