Researchers in Bradford, England, have begun a large trial testing whether firm limits on social-media use can improve teenagers’ anxiety, sleep and everyday wellbeing. The Bradford social media trial is designed to recruit 4,000–5,000 pupils aged 12–15 across 10–12 secondary schools. Some participants will have a two-hour daily limit and a 9 p.m.–7 a.m. curfew applied to ten major platforms for six weeks, while a control group’s use will be measured without restrictions.
The project is called the IRL Trial. Its official study page describes it as the first major study of reduced social-media use among healthy adolescents. The full trial was scheduled to launch in secondary schools in autumn 2026 after feasibility work during the spring and summer.
Independent reporting by The Times this week brought the rollout renewed attention. Earlier reporting by The Guardian documented the study’s development and its funding by the Wellcome Trust.
How the Bradford social media trial works
The trial covers TikTok, Snapchat, YouTube, Instagram, Facebook, Reddit, Threads, X, Kick and Twitch. Pupils in the intervention group will install an app that applies both a two-hour daily budget and an overnight curfew. The restrictions can be overridden; they are research interventions, not punishments or a legal ban.
The control group will install the same app, but it will not limit access. Instead, it will record how long participants spend on the covered services. Researchers say this approach lets them compare groups while keeping participants unaware of their allocation until after the baseline survey and app installation.
The published researcher information says participants will receive a £20 voucher after completing follow-up data collection. Those in the restricted group can also earn prize-draw entries by not overriding the daily limit or curfew. Schools receive an incentive for taking part.
What researchers will measure
The primary question is whether reducing social-media use changes self-reported anxiety. The study will also examine sleep quality, time with friends and family, wellbeing, body image, social comparison, school absences and bullying. Questionnaires are administered before and after the six-week intervention.
Researchers are not collecting the content pupils view. According to the project’s FAQ, the app records time and duration on linked services rather than identifiable information about posts, videos or messages. The team will use surveys to examine whether participants simply move to other devices, games, messaging apps or television.
That distinction is important. The trial can test the effects of reducing time on selected services, but it is not designed to identify which individual types of content are harmful or beneficial. It also measures use on a participant’s primary smartphone, not every device available to them.
Why the study could matter beyond Bradford
Governments are considering sharply different ways to protect young people online. Some proposals rely on minimum ages or account bans. Others require safer defaults, age assurance or stricter treatment of harmful material.
The Bradford study asks a narrower empirical question: what changes when teenagers voluntarily spend less time on major platforms? Its randomized design could produce stronger evidence than surveys that only compare heavy and light users, because those groups may differ in many other ways before social-media use is measured.
The Daily Vantage has separately covered Mexico’s platform-focused child-safety decree and the Philippines’ proposed under-13 restrictions. Neither policy answers the causal question at the center of the Bradford trial.
What the trial will not prove immediately
No outcome has been reported yet. Launching the study does not establish that social media causes anxiety, poor sleep or bullying, and it does not show that a two-hour cap is the best limit for every teenager. Those are questions the trial is intended to investigate.
Compliance will also matter. Participants can override restrictions, and some may use another phone, tablet or computer. Rather than pretending those behaviors do not exist, the researchers say they will measure displacement through surveys and explore circumvention in interviews.
The study also excludes WhatsApp from its restricted list. Researchers said young people raised concerns that limiting the messaging service could make it harder to contact family and friends. That choice makes the intervention more practical, although it means the study is not a test of reducing all digital communication.
When results may become useful
The intervention lasts six weeks, followed by data collection and analysis. The project team says it will share monthly written updates, but it has not promised a final result on a specific date. Any headline about benefits or harms should wait for the prespecified analysis rather than drawing conclusions from individual participants.
If the trial produces a measurable change, policymakers will still need to weigh the size of the effect, privacy, enforceability and differences among young people. If it finds little or no change, that would also be useful evidence: it could redirect attention from blanket time limits toward product design, content exposure, family support or other factors.
For now, the confirmed development is the test itself. Bradford is moving the debate from assumptions about screen time toward a controlled comparison of what happens when thousands of teenagers use less social media for a defined period.
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