When people spend a large portion of their media-consuming time on super short videos, their ability to maintain focus and control their attention takes a major hit. One large study looked at over 1,000 college students and found that short-form video addiction was linked significantly to weak attention control. (NIH )They found that viewing these short 15-30 second videos majorly affected their ability to stay focused, shift appropriately, and ignore distractions. In another experiment, researchers found that when people used short-video apps like TikTok as interruptions to other activities, their ability to remember and execute tasks later (prospective memory) dropped heavily compared with people who watched longer videos or none at all. (ARXIV) The constant habit of switching between clips trains the brain to crave instant novelty and makes it harder to tolerate slower, more mentally demanding tasks.
A review article also argued that social media, especially with rapid‐changing feeds and short clips, “significantly negatively impacts the sustained attention spans of young adults,” and that working memory and cognitive control shrink under heavy usage. (SCIRP ) TikTok’s design emphasizes ultra-quick gratification (swipe, short clip, next clip), which appears to train our brain to expect rapid change and reward. This contrasts with tasks that require focus or deeper thinking. One study explicitly says: “Key findings … indicate that TikTok’s rapid pace and constant stimulation can lead to shortened attention spans, reducing students’ ability to sustain focus during tasks requiring prolonged concentration.” (Research Gate ) Although this research doesn’t necessarily mean every single individual will suffer huge attention deficit, there is a strong link.