A major four-year international study has found that children who spend long hours on social media are more likely to experience a gradual decline in their ability to concentrate — an effect not seen with TV viewing or video games.
The study, published in Pediatrics Open Science, tracked 8,324 children aged 10 to 14 in Sweden and the United States, offering some of the strongest evidence yet linking social media to attention problems in young minds.
Social media singled out
Researchers from Sweden’s Karolinska Institutet and Oregon Health & Science University asked the children to report how much time they spent on social media, TV/videos, and gaming. Parents assessed their attention levels over the four years.
The results were striking: heavy use of platforms like TikTok, Instagram, Facebook, and Snapchat was associated with a steady rise in concentration difficulties.
According to senior author Professor Torkel Klingberg, the design of social media itself may be responsible.
“Social media entails constant distractions in the form of messages and notifications,” Klingberg said. “Even the anticipation of a message can disrupt concentration.”
Crucially, the researchers also found that children who already had attention issues did not increase their social media use — ruling out the possibility that attention problems lead to heavier usage.
A growing concern at population level
Although the attention decline in individual children was modest, the researchers warned that the cumulative impact across millions of young users may be substantial.
Klingberg said increased social media consumption could partly explain the rising number of ADHD diagnoses, though the study did not detect an increase in hyperactivity symptoms.
The findings come amid rising global debate over children’s access to digital platforms. Despite formal age limits of 13, the study found that social media use jumps from 30 minutes a day at age 9 to 2.5 hours a day at age 13.
Lead author Samson Nivins said the team hopes the results will encourage parents and policymakers to rethink age limits and platform design.
“We hope our findings help guide healthy digital habits that support children’s cognitive development,” he said.
