New research links overnight phone use to more cyberbullying and worse screen habits
New research links overnight phone use to more cyberbullying and worse screen habits, giving parents fresh reason to rethink the bedroom rule.
Most parents already know experts recommend keeping phones out of kids’ bedrooms overnight. Plenty of families let it happen anyway. New research offers a clearer reason to actually enforce that rule.
What the research found
A national survey of nearly 8,000 adolescents ages 12 to 14, published in June in the journal Acta Paediatrica, found that kids who use screens in their bedrooms overnight go on to use them more heavily a year later, along with showing more signs of problematic screen use. A second study, published in the Journal of Adolescent Health, found that children who look at screens in their bedrooms at night are more likely both to be cyberbullied and to cyberbully others themselves.
Both studies drew on the Adolescent Brain Cognitive Development Study, the largest long running national study of children’s health and brain development in the country. Dr. Jason Nagata, a pediatrics researcher at the University of California, San Francisco, led both studies and, in comments reported by CNN, suggested one reason for the cyberbullying link may simply be reduced parental oversight once a child’s phone use moves behind a closed bedroom door.
Nagata noted a limitation worth keeping in mind, since the findings on cyberbullying relied on kids self-reporting their own experiences, meaning the real numbers could run higher than what surveys captured.
How much sleep time phones are eating into
The scale of nighttime phone use surprised researchers. On average, young people in the study spent nearly an hour on their phones between 10 p.m. and 6 a.m. on school nights, and most were still on their phones somewhere between midnight and 4 a.m. during the school week.
Pediatric guidance has discouraged bedroom phone use for years, but Nagata, speaking to CNN, said what makes these newer studies useful is that they tie specific, changeable parenting habits to measurably better outcomes for kids, rather than offering only general advice.
Bedtime as the place to draw the line
Nagata acknowledged, per his CNN interview, that parents cannot realistically police screen time at every hour of the day, but said bedtime represents an unusually effective place to focus that effort given how directly sleep loss affects a teenager’s mental and physical health. Most teens already fall short of recommended sleep totals, and he told CNN that protecting that time can matter more than trying to control screen use everywhere at once.
His recommendation, as relayed to CNN, is straightforward: keep phones out of the bedroom entirely if possible, and if that is not workable, turn them off overnight instead. Psychologist Anna Seewald, host of the Authentic Parenting podcast and not involved in the research, told CNN she suggests easing into the change by having open conversations with kids about why sleep matters for the whole family, rather than simply imposing a new rule. She recommended, per that same interview, exploring articles or podcasts on the topic together as a starting point.
Screens at the table carry their own risks
The research extended beyond bedrooms. Kids who used screens during mealtimes were also more likely to be victims of cyberbullying, a pattern researchers linked to fewer opportunities for parents and children to check in about what is actually happening in a child’s life. The same research found that screen use during meals was tied to greater weight gain, since distracted eating tends to encourage overeating or eating without genuine hunger cues.
Nagata, in his CNN interview, described mealtimes as a built-in opportunity to reconnect as a family, something that gets lost when everyone is looking at a device instead of each other.
Seewald, speaking to CNN, suggested designating one spot in the house where everyone, parents included, leaves their phones during meals. She emphasized, per that interview, framing the change around connection rather than restriction, since kids tend to buy in more easily when a new habit feels additive rather than punitive. Simple prompts like conversation cards, sharing daily highlights and lowlights, or just trading jokes — suggestions Seewald offered CNN — can make screen-free meals feel less like a rule and more like a routine worth keeping.
Seewald’s broader point, as she told CNN, is that kids often reach for their phones to meet a basic emotional need, whether that is connection, belonging or simply feeling noticed. When families build in other ways to meet those needs through conversation, shared activities or humor, she said in that interview, the pull toward the phone tends to lessen on its own.
Source: CNN/ You haven’t been enforcing rules to manage your kid’s screen time. How to change that now