As Barrington families settle into the school year, a new peer-reviewed study is adding urgency to kitchen-table conversations about kids, phones and learning. A JAMA analysis of more than 6,000 children tracked from ages 9–10 into early adolescence reports that preteens who used increasing amounts of social media performed worse on tests of reading, vocabulary and memory than peers who used little or none.

Local data were not provided in the study, but the findings land squarely in ongoing debates familiar to Barrington parents and educators about attention in class and whether schools should curb phone use.

What the study found

The research, led by pediatrician Dr. Jason Nagata of the University of California, San Francisco, drew on the federally funded Adolescent Brain Cognitive Development (ABCD) Study, one of the largest ongoing projects following U.S. youth over time. The ABCD Study surveys participants about social media use annually and administers learning and memory tests every other year.

For this analysis, the team examined data from more than 6,000 children who entered the study at ages 9–10 and were followed through early adolescence. Researchers grouped participants by their evolving social media habits:

  • About 58% reported little or no social media use over several years.
  • Roughly 37% started with low-level use but reached about 1 hour per day by age 13.
  • The remaining 6%—a heavy-use group—climbed to three or more hours per day by age 13.

Across the cohort, higher social media use was associated with lower performance on measures of reading, vocabulary and memory. The results, published in JAMA, suggest a link between social media exposure and poorer cognition in early adolescence.

“This is a really exciting study,” says psychologist Mitch Prinstein at the University of North Carolina at Chapel Hill, who wasn’t involved in the research. “It confirms a lot of what we have been hearing about from schools all across the country, which is that kids are just having a really hard time focusing on being able to learn as well as they used to, because of the ways in which social media has changed their ability to process information, perhaps.”

Nagata said, “it’s critical to understand how social media use during school hours specifically affects learning, especially as so many schools are considering phone bans right now.”

Why classrooms here are watching

While the study did not include Barrington-specific outcomes, the patterns resonate with concerns voiced in suburban districts nationally about distractions and dwindling attention during instruction. Experts who interpret the findings point to plausible mechanisms that could be at work:

  • Attention fragmentation from frequent checking and multitasking that undermines sustained reading.
  • Time displacement, as minutes spent scrolling can crowd out homework or text-based activities that build vocabulary and memory.
  • Sleep disruption tied to evening device use, which may impair memory consolidation.
  • The prevalence of short-form, image- or video-heavy content that may not foster deep processing like longer reading does.

These are potential explanations, not proven causes. The new paper identifies associations, not causation, and the heaviest-use subgroup—about 6%—was relatively small, which can limit statistical precision for that slice of the sample.

What parents can do at home

Barrington families do not need local numbers to start pragmatic steps that align with the study’s implications and expert guidance:

  • Set clear limits on daily social media time and use device settings to help enforce them.
  • Create device-free homework windows and keep phones outside study spaces.
  • Establish a screen-free wind-down period before bed to protect sleep.
  • Encourage regular reading—books, long-form articles, and other text-rich activities.
  • Co-engage: talk with kids about what they’re seeing online and model critical thinking.
  • Watch for warning signs such as mood changes or academic dips and seek help if needed.

These measures target the same potential pathways flagged by researchers—attention, time use, and sleep—while supporting skills directly tied to reading and memory.

Policy talk: cautious steps for schools

Nagata’s emphasis on school-hours use arrives as many schools consider whether and how to limit phones. The study’s association gives weight to exploring policies that protect attention without overreaching. For Barrington-area discussions, several options could be piloted and evaluated:

  • Phone-free classrooms or restricted-use periods during instruction.
  • Digital-literacy lessons that teach attention management and healthy media habits.
  • Paired measurement: track academic indicators and gather student/teacher feedback before and after policy shifts.
  • Teacher training on managing attention in tech-saturated environments.
  • Family engagement so home and school expectations align.

Pilots with clear metrics can surface benefits and trade-offs, helping communities calibrate policies to their own needs.

Important caveats and open questions

The study “suggests a link” rather than proving that social media causes declines, and other factors could contribute. The available summary does not list all statistical controls or effect sizes, leaving open questions about how large the differences were and which confounders—such as baseline skills, sleep, or home context—were accounted for. It also does not separate in-school from out-of-school use in detail, a distinction that matters for policy design.

Still, Prinstein’s observation that the results mirror what many educators report—students “having a really hard time focusing”—will feel familiar to Barrington teachers and families alike. And the ABCD Study’s large, longitudinal design lends weight to watching these trends closely as children move from elementary into middle school.

For Barrington, the path forward likely won’t hinge on a single study or a one-size-fits-all rule. But the message is plain enough: attention, sleep and time for reading are scarce commodities in early adolescence. Whether at the kitchen table, in a homeroom, or in a school board workshop, the conversation now is how to safeguard them—and how to measure what works for our community. No local figures were reported in this analysis, but the choices Barrington families make today will help determine whether the next set of numbers tells a brighter story.