Are short-form videos bad for your attention span? It depends

The honest answer to "are short-form videos bad for your attention span" is a qualified yes. In the largest review so far, covering 71 studies and 98,299 people in Psychological Bulletin in 2025, heavier short-form video use went with poorer attention and weaker impulse control. The link was strongest for compulsive, hard-to-stop scrolling and much weaker for plain hours watched.

No study in that review shows lasting damage. The arrow may also point the other way, since people who already find it hard to focus may be drawn to the feed. So treat this as a habit you can change, and ask yourself a more useful question than "how many hours?": can you stop when you want to?

• The link is moderate: r = -.38 for attention, pooled from 5 studies.
• Compulsive use tracked worse thinking skills almost twice as strongly as time spent watching.
• Nearly all the evidence is correlational, so cause and permanence are both unproven.

Are short-form videos bad for your attention span? What 71 studies found

The paper is by Nguyen and colleagues, in the September 2025 issue of Psychological Bulletin, published by the American Psychological Association. It pooled 71 studies, was preregistered, and had no outside funding. The authors looked at two areas: thinking skills and mental health.

Across all cognitive measures (14 studies), the correlation was r = -.34. Inhibitory control, your ability to hold back an impulse, showed the strongest link at r = -.41 across 7 studies. Memory (-.14) and language (-.16) each rested on a single study and showed weak links. Reasoning showed no significant link at all.

The pattern held for adults (-.32) and young people (-.36) alike, and it was the same for TikTok as for short-form video in general. On the mental health side, across 61 studies, the overall link was weaker (r = -.21). Stress and anxiety were the strongest, at -.34 and -.33.

An r of -.38 means video use lines up with about 14% of the spread

Correlations are hard to feel. A rough way to read one is to square it. Square -.38 and you get about .14, so roughly 14% of the variation in people's attention scores lines up with their short-form video use.

The other 86% comes from everything else: sleep, stress, how the test was run, and a long list of things nobody measured. For plain time spent (r = -.20), the share drops to about 4%. That is a real link for a single habit and worth acting on. It also leaves plenty of room for your focus to depend on things you can change.

Compulsive scrolling showed nearly twice the link of hours watched

About half the studies (52%) measured use with addiction scales, which ask about habitual, uncontrollable watching. Those found nearly double the link of studies that counted hours. One study of emotional attachment, how much people feel they need the feed, found r = -.55, though one study is a thin base.

The authors' reading is that addiction scales capture loss of control, and loss of control is the harmful part. That fits with why it feels so hard to stop scrolling: the feed keeps offering one more video, and the habit takes over once you stop choosing what comes next.

Five studies, mostly from Asia: what the review can't tell you

The authors are upfront about the gaps. These are the ones that matter most if you're trying to judge your own habits.

• 87% of the studies were correlational. They show a link and say nothing about cause.
• The headline attention figure comes from just 5 studies, and all the thinking-skills results come from 14.
• 74% of included studies were from Asia, and the search covered English-language papers up to October 28, 2024.
• Results varied hugely between studies (I² of about 96%), so the average hides a wide spread.
• Only about 10% of studies controlled for general social media use.

The authors also say the link could run backwards. People with lower baseline focus may gravitate to stimulating, low-effort content, and anxiety, depression or attention difficulties could drive both heavy use and poorer test scores. They call for longer-term and experimental studies.

The one causal test in the brief, a short conference paper by Lin and colleagues at CHI 2024, found the familiar correlation in a snapshot, then no significant change in sustained attention in its longer-term experiment. It's small and unreplicated, so it reassures a little and proves little.

A piece in Reason, syndicated on Yahoo, argued the study shows short-form video isn't rotting your brain. It's right that the cognitive results rest on few studies and lean on addictive use. It overreaches if you take it to mean there's no link. The review found moderate correlations, and adjusting for publication bias barely moved them (r = -.35).

The goldfish stat is a myth, and so is permanent TikTok brain

The claim that humans have an 8-second attention span, shorter than a goldfish, traces back to a 2015 Microsoft report whose numbers couldn't be traced to primary research. How long attention lasts depends on the task. A good film and a tax form will get very different numbers from the same person.

The other popular stat, about how many seconds people stay on one screen, comes from Gloria Mark's computer logging of office workers, as Psychology Today describes. It measures how often people switch tasks at a desk. It says nothing about attention capacity, and it isn't about short video.

"Dopamine hits" are a proposed mechanism, and none of these studies measured dopamine. "TikTok brain" is a nickname for the feeling of scattered focus. Nothing in this evidence shows permanent damage, and nothing shows that short video causes ADHD.

Smaller studies point the same way, with the same caveats

A 2026 systematic review in the International Journal of Adolescence and Youth found attention and self-control were the functions most tied to short video addiction, with correlations of roughly -0.21 to -0.60. Again, that's addiction scales, not ordinary use. Two small EEG studies, one by Walla and Zheng showing a weaker attention-related brain response in heavy users and one with 48 mostly female students, add detail but are snapshots too.

There's also experimental work on remembering what you meant to do next, which VICE headlined as TikTok "melting" your attention span. The finding is narrower than that, and I've covered it in what new studies show about short videos and memory.

For parents: the link shows up in children aged 6 to 12

A Thai survey of guardians of children aged 6 to 12 found short-form video use was associated with more parent-rated inattention. That held after adjusting for total screen time, parenting practices and parents' own well-being. It's a single cross-sectional study at one hospital, so it can't show cause.

The useful hint is that the kind of screen may matter as well as the amount. Favour videos your child picks over autoplay feeds, and keep short video out of homework time.

How to protect your attention span without deleting every app

1. 01
   Choose your videos

   watch things you found through search, a link or a friend's message, and skip the algorithmic feed and autoplay, which the review's authors flag as the design concern.

2. 02
   Give it a time and place

   for example, 20 minutes after dinner on a laptop, instead of in bed or between tasks, in line with the authors' call for intentional use.

3. 03
   Guard your focus hours

   keep feeds out of work and study blocks entirely, since impulse control and attention showed the biggest gaps.

4. 04
   Practise long attention

   spend 20 to 30 minutes a day on reading, a long video or a podcast without switching, and stretch it slowly (low-risk, though not tested in these studies).

5. 05
   Run a two-week experiment

   turn the feed off for 14 days and jot down how your focus, sleep and mood feel.

If your focus trouble is longstanding and affects work, study or relationships whether or not you've been scrolling, talk to a doctor about an assessment. Attention problems can come before heavy use, and the app may be a symptom more than the cause.