A social media ban for under-16s means young people’s childhoods are set to changeAnna Barclay/Getty Images

The UK will ban children under 16 from social media by early next year, replicating a policy that came into effect in Australia in 2025. The move is intended to put children’s well-being ahead of technology companies’ profits. But how will scientists study the effects of the measure and determine whether it is actually having a positive impact?

“We have no evidence either way,” says Pete Etchells at Bath Spa University in the UK, who is working with the Australian government to analyse the effects of its own ban and is also advising the UK government. “It’s such new territory.”

Leading the way on research in the UK is the Wellcome Trust, which is already deep into the IRL Trial in Bradford. This has recruited about 4000 kids from 10 schools, aged 12 to 15, who installed an app on their phones to track their social media use. For half of those children, the app also limits access to social apps. The researchers expect to publish their first results in the middle of next year, after the newly announced ban has taken effect. However, Catherine Sebastian at the Wellcome Trust says the findings should still help inform policy.