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UK tests social media limits in 309 homes — qualitative reports are not national causal proof

TL;DR

UK families reported better sleep and focus under social limits; the qualitative pilot cannot prove causation.

In a first household pilot, the UK government asked 309 families with children aged 13 to 17 to test one of three restrictions at home: removing selected social-media apps, limiting each app to 15 minutes a day, or setting a 9pm-to-7am app shutdown period. The March launch announcement said the pilot would last six weeks; the July final report said the intervention lasted one month.

Teenagers and parents were interviewed before and after the pilot. Some families reported earlier bedtimes, better sleep, calmer moods, and improved concentration at school. Families that removed apps reported more face-to-face activity, while some in the overnight group said the cutoff became routine after two weeks. The 15-minute limit led some teenagers to switch devices or move to unrestricted platforms.

This was qualitative research conducted by Savanta for the Department for Science, Innovation and Technology. The report did not publish a nationally representative effect size. Interviews with 309 households cannot support conclusions about every UK teenager or prove that the restrictions caused better sleep. The pilot did not disable Instagram, TikTok, or Snapchat nationwide and was not a new national regulation.

A separate randomized controlled trial funded by the Wellcome Trust and led by the Bradford Institute for Health Research with Cambridge psychologist Amy Orben plans to recruit about 4,000 pupils aged 12 to 15 from 10 Bradford secondary schools. That larger trial has not begun and is not evidence produced by these household interviews.

via The Register / UK government final report / UK government pilot announcement
英國首次把社交媒體限制搬進 309 個家庭|睡眠改善屬質性回報,不是全國實驗