During the COVID-19 pandemic, lecturers wore masks which covered facial cues. In two studies, we examined students' ability to comprehend both factually and inferentially presented information when the speaker's facial cues were or were not available and when delivered with or without expressive prosody. While comprehension was not affected by the…

The empirical evidence concerning the question whether an instructor should be presented on online lecture slides is equivocal and two lines of theoretical reasoning exist. On the one hand, the instructor may distract from the content, thereby hampering learning; on the other hand, the instructor may function as a social cue that triggers a more…