#Iwatch record lectures series#

“Surprisingly, video speed had little effect on both immediate and delayed comprehension until learners exceeded twice the normal speed,” said lead author Dillon Murphy, a doctoral student in psychology at UCLA. The normal-speed group averaged 24 out of 40, the 1.5-speed and double-speed group averaged 21, and 2.5-speed students averaged 20. The 2.5-speed group didn’t do as well, answering only about 22 questions correctly.Ī week later, the same groups were given different tests related to the two videos to assess what they’d retained. The normal-speed group averaged 26 correct answers out of 40, while the double-time group scored 25 (about the same as the 1.5-speed group). Immediately after the viewings, they were given comprehension tests on the individual videos, each comprising 20 multiple-choice and true-or-false questions. They were instructed not to pause the videos or take notes. One group watched at normal speed, one at 1.5 times normal speed, another at double speed and the final group at 2.5 times normal speed. In one experiment, the researchers divided 231 UCLA undergraduates into four groups and had them watch two 13-to-15-minute lecture videos - one on the Roman Empire and another on real estate appraisals.

#Iwatch record lectures series#

With 85% of UCLA students surveyed as part of the study reporting they “speed-watched” lecture videos, the researchers engaged students in a series of experiments to test how faster speeds affected learning and knowledge retention. But once they exceed that limit, things begin to get a little blurry, said Alan Castel, the study’s senior author and a UCLA professor of psychology.

A new UCLA study shows that students retain information quite well when watching lectures at up to twice their actual speed.

But does comprehension suffer as a result? Recorded lectures have become a routine part of course instruction during the COVID-19 pandemic, and college students often try to pack more learning into a shorter span by watching these recordings at double their normal speed or even faster.