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video games

It has become close to a cultural consensus that short-form video — the feed of fifteen-to-ninety-second clips popularised by TikTok and now mirrored across every major platform — is eroding people's ability to sustain attention. The claim is intuitive and widely repeated by educators, parents and commentators. It is also considerably harder to establish with rigour than the confidence of the discourse suggests, and the research that does exist points to something more specific and more structural than a simple story of collectively shrinking brains.

• Most research linking short-form video use to attentional difficulties is correlational, making it hard to distinguish cause from selection — people already prone to attention difficulties may gravitate towards the format.
• Longitudinal studies capable of tracking attention measures over time in the same individuals are still relatively scarce and generally show small effect sizes where present.
• Some researchers distinguish between sustained attention on a single task and the ability to rapidly switch between tasks, arguing heavy short-form use may specifically train the latter rather than uniformly degrading the former.
• Confounding factors — sleep displacement, notification frequency, overall screen time — are difficult to separate from short-form video specifically in most study designs.