Children who start scrolling social media at 11 or 12 wind up noticeably behind their classmates in reading and math by the time they hit high school, according to a sweeping new study out of Italy.
“Time spent online inevitably displaces other activities that support healthy development, including sleep, physical activity, face-to-face social interaction, play, reading and learning,” said Kirsty Ross, a professor in Massey University’s School of Psychology, responding to the findings. The gap she’s describing isn’t small — researchers say it adds up to roughly six months of lost schooling.
The study, published this month in Nature Human Behaviour, tracked 5,227 students across 28 schools in northern Italy from 2023 to 2024. Lead author Chiara Respi, a researcher at the University of Milano-Bicocca, and her team compared standardized test scores against when each student first joined a social media platform.
Kids who signed up in sixth grade — around ages 11 to 12 — scored 0.22 standard deviations lower in Italian and up to 0.27 standard deviations lower in math than peers who waited until ninth grade or later, according to the study covered by Newsweek. English scores showed no significant difference. Researchers also found a dose-response pattern: kids who joined in seventh or eighth grade fell somewhere in the middle, doing worse than late adopters but better than the earliest ones.
Respi told reporters that “waiting until around ages 13 to 14 may be beneficial,” while cautioning that age limits alone won’t fix the problem.
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She’s pushing for digital education programs that pull in both families and schools — not just a higher minimum age.
Not every researcher reading the study is convinced the fix is simple.
“Some benefit from social media, for others it is largely benign, but some children do have negative experiences online,” said Eoin Whelan, a researcher at the University of Galway. Cara Swit, an associate professor at the University of Canterbury’s Faculty of Health, made a similar point — noting that “messaging friends, watching short videos, accessing educational content and experiencing harassment may have very different effects,” which means lumping all screen time together may miss the real story.
None of this will surprise longtime Movieguide® readers. We’ve been tracking the growing medical consensus on kids and screens for years, from former Surgeon General Vivek Murthy’s push for warning labels on social apps to former Surgeon General Jerome Adams comparing the platforms to addictive drugs that were “specifically designed to addict children.” This new study doesn’t just confirm a hunch — it puts a number on what parents have suspected all along.
For Christian families, the takeaway isn’t complicated, even if the parenting is. Scripture calls us to guard our hearts and minds “above all else” (Proverbs 4:23), and that guardianship starts earlier than most parents realize — often before a child ever finishes middle school. Delaying a smartphone or a social media account isn’t about fear of technology. It’s about giving kids the years they need to build the reading habits, the attention span, and the face-to-face relationships that a feed can’t replace.
The researchers aren’t calling for panic. They’re calling for patience — a few more years before the apps, a little more investment in what actually builds a child’s mind. That’s a trade most parents, and plenty of teachers, would take in a heartbeat.
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