A major body of research conducted by teams in Sweden and the United States is now providing clearer evidence about how different forms of screen time influence children’s concentration.
The findings point to a distinct pattern: while time spent on video games or television does not appear to affect attention in a measurable way, social media usage may gradually erode a child’s ability to stay focused.
A series of coordinated studies — drawing from the extensive Adolescent Brain and Cognitive Development (ABCD) Study in the US — followed more than 8,300 children from late childhood into early adolescence.
These multi-year results, recently
published in Pediatrics Open Science, identify a consistent link between social media habits and developing inattention symptoms.
The research highlights a small individual-level effect that becomes more significant when viewed across entire populations.
What examining children’s digital habits revealed
The research teams monitored children who were nine or ten years old at the start of the study period, capturing detailed annual information on how much time they spent on various forms of digital media and how their behaviour changed as they aged.
Children self-reported their daily screen use, covering social media, television or online videos, and video games, using a structured Youth Screen Time Survey.
Meanwhile, parents evaluated attention-related and impulsive behaviours using the widely recognised Child Behaviour Checklist.
The group studied was substantial in size — 8,324 children — with a nearly even distribution of boys and girls and an average starting age of about 9.9 years.
On average, these children spent roughly 2.3 hours each day watching television or online videos, around 1.5 hours playing video games and approximately 1.4 hours using social media platforms.
These platforms included Instagram, Snapchat, TikTok, Facebook, Twitter and messaging services that enable quick interaction, sharing and feedback.
The researchers sought to explore whether these different digital activities were associated with any long-term changes in attention or hyperactivity.
They also factored in socioeconomic background and genetic predisposition by calculating a polygenic risk score for ADHD for each participant.
The aim was to determine whether emerging attention difficulties could be explained by underlying risks or whether they developed independently of these factors.
Across the four-year monitoring period, the clearest pattern involved the relationship between social media use and increasing levels of inattention.
The studies consistently found that children who spent more time on social media showed a steady rise in attention difficulties over time.
This association did not appear for video game use or for time spent watching television or online videos, even though these screen activities occupied similar amounts of the children’s daily time.
One of the most significant observations from the statistical analysis was that social media use was linked with an increase in inattention symptoms, and the effect strengthened cumulatively as the children grew older.
The researchers described the quantitative increase in symptoms as modest at an individual level, but potentially impactful when expanded across a large population of children who use these platforms daily.
The study reported, “We identified an association between social media use and increased inattention symptoms, interpreted here as a likely causal effect.”
The research stresses that while the measured effect may be limited for any single child, collective behavioural changes could have broad implications, especially given the dramatic rise in daily social media exposure among young adolescents over the past decade.
The research teams also found no evidence that children who already had attention difficulties were more likely to begin using social media more heavily later.
This detail adds weight to the conclusion that the direction of influence runs from social media use toward symptom development, rather than the reverse.
Specialists who worked on the study offered explanations for why only social media appears to influence attention in this way.
The structure of social media platforms requires regular checking, frequent engagement and constant monitoring of notifications, messages and updates.
These rapid shifts in stimulus may train a child’s brain to expect continual novelty, undermining the ability to sustain focus during tasks requiring prolonged attention.
Torkel Klingberg, professor of cognitive neuroscience at the Karolinska Institute, highlighted this distinction, stating, “Our study suggests that it is specifically social media that affects children’s ability to concentrate.
“Social media entails constant distractions in the form of messages and notifications, and the mere thought of whether a message has arrived can act as a mental distraction. This affects the ability to stay focused and could explain the association.”
This explanation aligns with broader research showing that intermittent, unpredictable forms of digital engagement — like those built into many social platforms — can disrupt the brain’s attentional networks.
Television and video games, although absorbing, tend to present continuous narrative or gameplay experiences that do not interrupt focus as frequently.
Importantly, the study found no evidence that social media use contributed to increased hyperactivity or impulsiveness. The shift was specific to inattention symptoms, which include difficulty maintaining focus, being easily distracted, or struggling to stay organised.
How there is no influence from genetics and background
By incorporating genetic risk scores for ADHD, the study also tested whether children with genetic markers associated with inattention were more susceptible to the influence of social media.
The results showed no such interaction. Children with varying genetic profiles were equally affected when exposed to higher levels of social media use.
Similarly, socioeconomic factors — often influential in behavioural studies — did not modify the association.
Whether a child came from a higher- or lower-income household, lived in a well-resourced environment or faced structural disadvantages, the pattern remained consistent.
Pre-existing ADHD diagnoses or ADHD medication regimens also did not change the outcome.
How early access and rapidly rising usage adds to the issue
The study’s findings point toward a striking increase in social media use as children get older. At age nine, the average child used social media for about half an hour per day.
By age 13, this climbed to around two and a half hours daily — an increase occurring despite the fact that many of the platforms studied have official age minimums of 13.
This surge in early adoption has raised concerns about the effectiveness of age restrictions. The report stated, “This early and increasing social media use underscores the need for stricter age verification and clearer guidelines for tech companies.”
Researchers observed that this growth in usage coincided with a period in which ADHD diagnoses have become more common.
US national health survey data indicate that the prevalence of ADHD among children rose from 9.5 per cent in the mid-2000s to 11.3 per cent by 2020-22.
While ADHD has multiple contributing factors and is not solely determined by behaviour, the researchers argue that widespread changes in digital behaviour may explain part of the shift.
Klingberg added that increased dependence on social platforms could be one factor behind the overall rise in diagnoses, even though the study did not detect changes in hyperactivity.
What parents can take away from the findings
The researchers behind the project caution that these results should not be interpreted as predicting that every child who uses social media will experience concentration difficulties.
Instead, they argue that the strength of the study lies in its broad scope and its insights into subtle changes unfolding across large populations.
Samson Nivins, one of the study’s first authors, pointed out the importance of informed decision-making, stating, “We hope that our findings will help parents and policymakers make well-informed decisions on healthy digital consumption that support children’s cognitive development.”
The researchers point out that refinements to platform design, clearer age boundaries and better guidance for families could help mitigate the identified risks.
They also note that they intend to follow the children beyond age 14 to determine whether the relationship between social media use and inattention remains consistent into mid-adolescence and later.
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With inputs from agencies
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