- Design
- Umbrella review of 23 meta-analyses
- Population
- 2,817,252 children and adolescents from 64 countries
- Primary outcome
- Academic, cognitive, socioemotional and mental health outcomes
- Effect
- Academic achievement r −0.15 (95% CI −0.23 to −0.07); language r −0.14
This umbrella review pooled 23 meta-analyses of population-based studies covering 2.8 million children and adolescents from 64 countries, converting results to correlations for comparison.
Screen use was associated with lower academic achievement (r −0.15) and language skills (r −0.14), and with more internalising (r 0.10) and externalising (r 0.11) problems. Associations with emotional and peer problems looked larger but had wide intervals. There was no clear link with executive function or with mathematics, science or reading scores.
These are small correlations from mostly observational data, so they cannot show that screens cause the problems; children with difficulties may also use screens more. They do support practical advice on limiting screen time, particularly in early childhood when language is developing.
- Ask about daily screen time and the type of content at developmental checks.
- Advise parents of young children to prioritise talk, play and reading over screens.
- Consider screen use when assessing language delay or behaviour problems.
- Encourage screen-free meals and bedtimes as simple, achievable limits.
Why it matters
The evidence supports moderation, not alarm.
Don't overread it
These associations do not show that screens cause poorer outcomes.
The statistics, in plain English
A correlation (r) of −0.15 is small: screen use explains only about 2% of the variation in academic achievement. Most included studies were observational, so the direction of the link is unclear.
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