Murphy Dillon H, Hoover Kara M, Castel Alan D
Department of Psychology, University of California Los Angeles, Los Angeles, CA, USA.
Memory. 2023 Apr 9:1-16. doi: 10.1080/09658211.2023.2198264.
Prior work has demonstrated that watching videos at faster speeds does not significantly impair learning in younger adults; however, it was previously unclear how increased video speed impacts memory in older adults. Additionally, we investigated the effects of increased video speed on mind-wandering. We presented younger and older adults with a pre-recorded video lecture and manipulated the video to play at different speeds. After watching the video, participants predicted their performance on a memory test covering the material from the video and then completed said memory test. We demonstrated that although younger adults can watch lecture videos at faster speeds without significant deficits in memory, older adults' test performance is generally impaired when watching at faster speeds. Additionally, faster playback speeds seem to reduce mind-wandering (and mind-wandering was generally reduced in older adults relative to younger adults), potentially contributing to younger adults' preserved memory at faster speeds. Thus, while younger adults can watch videos at faster speeds without significant consequences, we advise against older adults watching at faster speeds.
先前的研究表明，以更快的速度观看视频不会显著损害年轻人的学习效果；然而，此前尚不清楚视频速度的提高对老年人的记忆力有何影响。此外，我们还研究了视频速度提高对走神的影响。我们向年轻人和老年人播放一段预先录制的视频讲座，并对视频进行处理，使其以不同速度播放。观看视频后，参与者预测他们在涵盖视频内容的记忆测试中的表现，然后完成该记忆测试。我们证明，虽然年轻人可以以更快的速度观看讲座视频而不会出现明显的记忆缺陷，但老年人在以更快速度观看时，测试表现通常会受到损害。此外，更快的播放速度似乎会减少走神（而且老年人相对于年轻人来说走神现象通常较少），这可能是年轻人在更快速度下记忆力仍能保持的原因。因此，虽然年轻人可以以更快的速度观看视频而不会产生重大影响，但我们建议老年人不要以更快的速度观看。
