As digital devices become more embedded in daily life, new research suggests the links between screen time and childhood wellbeing may be less clear-cut than previously thought, prompting a reassessment of societal fears and parental practices.
Screen time has become a catch-all blame for a host of childhood ills, from poor sleep to rising anxiety and depression. Parents are told that tablets and smartphones are eroding attention, fuelling bad behaviour and leaving children tired and unhappy. Yet a growing body of research suggests the science is less clear-cut than the public debate suggests.
The argument has sharpened as technology has become more embedded in daily life. Steve Jobs, the late Apple chief executive who oversaw the launch of the iPad, was widely reported to have restricted his own children’s access to it, while Bill Gates has said he limited his children’s technology use. For many families, those anecdotes have reinforced the sense that digital devices are something to be tightly rationed.
But academics who study the issue say the evidence still does not support the strongest claims made about harm. Pete Etchells, a psychology professor at Bath Spa University, argues in his book Unlocked: The Real Science of Screen Time that much of the research is inconsistent or methodologically weak. He says there is no solid scientific basis for the most alarming stories about children and screens.
A similar conclusion was reached in a 2021 review published by the American Psychological Association. After examining 33 studies published between 2015 and 2019, 14 researchers from universities around the world found that screens, including smartphones, social media and video games, played only a small part in mental health problems. That does not mean there is no effect at all, but it does suggest the relationship is more limited than many assume.
Sleep has been one of the most hotly debated areas. Some studies have linked screen use before bed with poorer rest, and a 2024 review of 11 studies found no general proof that light from screens in the hour before sleep disrupts children’s sleep. Other research, however, points in the opposite direction. A study on children found that each extra hour of screen time was associated with around 10 minutes less sleep, while a separate review concluded that evening use was linked with shorter sleep, longer time taken to fall asleep and more broken rest.
Etchells says one reason the debate remains muddled is that much of the data depends on self-reporting. Young people are often asked how long they think they spent on screens and how it made them feel, a method that leaves ample room for error. He also argues that “screen time” is too vague a measure to be useful on its own, because it lumps together wildly different activities.
That distinction matters. Watching educational content, messaging friends, gaming, doomscrolling through bad news and video chatting with family are all counted as screen use, but they are hardly the same experience. Etchells says researchers need to look more carefully at what children are actually doing online rather than treat all device use as equivalent.
Some of the largest studies have failed to find the sweeping harms many fear. A project led by Andrew Przybylski of Oxford University analysed 11,500 brain scans from children aged 9 to 12, along with health assessments and screen-use data collected between 2016 and 2018. The study found links between screen habits and changes in brain connectivity, but no evidence that screen time was tied to worse mental health or cognitive problems, even among children using screens for several hours a day. Przybylski has argued in peer-reviewed work that videogames and social media can even improve wellbeing in some cases.
The debate is not only scientific but political. Some researchers warn that strict bans risk making devices more alluring, turning them into a forbidden fruit. Yet others believe stronger limits are overdue. The British campaign Smartphone Free Childhood says 150,000 people have signed a pledge backing a ban on smartphones for children under 14 and a change to social media access at 16.
Jean Twenge, a professor who has studied rising depression among American teenagers, says she did not set out to prove smartphones and social media were harmful. But she says they emerged as the one common factor in the trends she examined. Twenge now argues that children should be kept apart from smartphones for as long as possible and says 16 is a more suitable age because teenagers are more mature and their social world is more stable by then.
She also points to research she sees as supportive of tighter limits. A Danish study in 2024 involving 181 children from 89 families asked half of the participants to cut their screen use to three hours a week and hand over tablets and smartphones for two weeks. The study found that reducing screen use had a positive effect on psychological symptoms and prosocial behaviour, though the authors called for more research. Twenge says other British diary-based research found heavier use of social media was linked with greater feelings of depression among girls.
Official guidance remains patchy. The American Academy of Pediatrics and the Royal College of Paediatrics and Child Health do not recommend hard time limits for children, while the World Health Organisation advises no screen time for children under 1 and no more than an hour a day for those under 4, mainly to encourage physical activity. In practice, that leaves parents navigating a debate in which the evidence is incomplete, the risks are uneven and the stakes are high.
That uncertainty matters because the issue is no longer just about television or games consoles. Children are growing up with smart glasses, smaller online communities and AI chatbots that can help with homework or even mimic therapy. If screens are harmful, the science may still be years behind the problem. If they are not, families may end up depriving children of tools that are already shaping adult life.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
