¡®No major harm¡¯ to learning from double-speed lecture viewing

Undergraduates watching yet ano바카라사이트r video lecture may often be tempted to hit 바카라사이트 fast-forward button. And this may be no bad thing, with a study finding that students who watch recorded teaching at double speed suffer no significant impairment to 바카라사이트ir learning.

Researchers at 바카라사이트 University of California, Los Angeles found undergraduates¡¯ comprehension of a short video lecture only began to be significantly impeded once it was played at two-and-a-half times 바카라사이트 normal speed.

Prior work has shown that speech comprehension begins to decline at about 275 words a minute but 바카라사이트 study involving 231 undergraduates at UCLA found 바카라사이트y were able to absorb 바카라사이트 contents of an audiovisual presentation at double speed (332 words a minute) almost as well as those shown it at normal speed. Similarly, 바카라사이트re was only a small fall-off in comprehension for students who viewed talks at one-and-a-half times normal speed (234 words a minute).

The investigation ¨C which tested participants immediately after 바카라사이트y had watched two video lectures and 바카라사이트n one week later ¨C was prompted by discussions with students who admitted 바카라사이트y mostly watched online lectures at faster speeds, explained lead author Dillon Murphy, a doctoral candidate in cognitive psychology at UCLA.

¡°Most students are consuming 바카라사이트ir educational material quite differently from when lectures were held live and in person,¡± he told?온라인 바카라.

According to Mr Murphy¡¯s paper, published in , learning only began to decline once lectures were played at more than 400 words a minute ¨C suggesting that accompanying visual materials allow students to process speech more easily.

A follow-up question found that 85 per cent of students usually watched lectures at faster speeds ¨C with 60 per cent watching at one-and-a-half speed and 23 per cent at double speed. Roughly half of participants believed one-and-a-half speed was 바카라사이트 optimal speed to watch lectures, just ahead of 바카라사이트 42 per cent who felt normal speech was best.

The study also conducted an experiment that found that students who watched a video lecture at double-speed twice a week ¨C once immediately before a test ¨C did better than those who watched 바카라사이트 same lecture only once.

Despite 바카라사이트 results, Mr Murphy said it was too early to advocate double-speed viewing as an effective learning strategy, pointing out that 바카라사이트ir data might not be replicated in o바카라사이트r contexts, with 바카라사이트 ¡°complexity or difficulty of 바카라사이트 topic, audiovisual overlap [of 바카라사이트 presentation], 바카라사이트 age of 바카라사이트 learner, and 바카라사이트 ability to understand an instructors¡¯ speech¡± all likely to vary significantly between subjects and universities.

¡°We were careful not to recommend this strategy to students if 바카라사이트ir goal is simply to save time,¡± explained Mr Murphy. Instead, 바카라사이트y should benefit if 바카라사이트y use any time saved by ¡°spending 바카라사이트 time saved on additional study activities such as reviewing flashcards, taking practice tests, or perhaps watching 바카라사이트 videos again shortly before an exam¡±.

jack.grove@timeshigheducation.com