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How TikTok-style videos keep human brains hooked on content

DW English · Jun 21, 2026, 3:00 PM · Also reported by 1 other source

Key takeaways

  • Tik Tok, Instagram and You Tube clips are designed to overwhelm the brain's pleasure circuitry and keep people watching.
  • Before getting out of bed, we might scroll through TikTok, Instagram Reels or YouTube Shorts.
  • Researchers at Germany's University of Bayreuth examined the phenomenon, especially in children and adolescents.

Why this matters: an international story with cross-border implications worth tracking.

Tik Tok, Instagram and You Tube clips are designed to overwhelm the brain's pleasure circuitry and keep people watching. Researchers say short-form videos may only be the start when it comes to harvesting human attention.

https://p.dw.com/p/5Fi W0The competition between platforms has been described as 'a ruthless knife fight for human attention'Image: Pascal Deloche/Godong/picture alliance Advertisement For many of us, the day often starts with a swipe. Before getting out of bed, we might scroll through TikTok, Instagram Reels or YouTube Shorts. A few clips become a few dozen. Minutes become an hour. Then, later in the day, we return for more.

Researchers at Germany's University of Bayreuth examined the phenomenon, especially in children and adolescents.

Article preview — originally published by DW English. Full story at the source.
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