Screen use was linked to lower language skills and more emotional and peer problems

Design

Quantitative 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; language r −0.14; emotional problems r 0.30; no association with executive function

This umbrella review re-analysed 23 meta-analyses covering 2.8 million children and adolescents from 64 countries, converting effects to correlation coefficients to compare them.

Screen exposure 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) behaviour. Larger associations were seen with emotional problems (r 0.30) and peer problems (r 0.28), though with wide intervals. There was no association with executive function or with maths, science or reading scores. Screen type, age and the kind of problem changed some associations.

Most of these correlations are small. All the underlying studies are observational, and children with more difficulties may use screens more, rather than screens causing the difficulties. What the review adds is breadth and consistency, which makes the language and behaviour findings hard to dismiss. It supports counselling families on screen time, particularly for young children, without overstating the harm.

• Ask about screen time at developmental checks, especially in toddlers with language delay.
• Encourage shared, interactive activities over passive screen use in young children.
• Ask about social media use in adolescents with emotional or peer problems.
• Avoid presenting screen use as the cause of a child's difficulties; the evidence is associational.

Why it matters

It consolidates scattered findings into a consistent, if modest, signal parents and schools can act on.

Don't overread it

These are associations from observational studies; they do not show that reducing screens improves outcomes.

The statistics, in plain English

A correlation (r) runs from −1 to 1. Values around 0.1 to 0.15 are small: screen use explains only about 1–2% of the differences between children in these outcomes. Values near 0.3 are moderate but here have wide confidence intervals.

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