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Screen Time and Cognitive Development in Children: New research Findings

A recent study published in JAMA Pediatrics suggests a correlation between increased screen time at age 9 and lower cognitive test scores in children at age 14. The research, conducted by a team at Karolinska Institutet in Sweden, highlights the importance of understanding the impact of digital consumption on developing brains. The study, published December 8, 2025, adds to a growing body of evidence concerning the effects of screen time on childrenS cognitive abilities.

Study Details and Findings

Researchers followed nearly 800 children in Sweden, assessing their screen time habits at age 9 and then evaluating their cognitive performance – including intelligence, problem-solving, and language skills – at age 14. The study found that children who reported more screen time at age 9 tended to score lower on cognitive tests five years later.Specifically, the study measured screen time through self-reporting by the children, asking about the amount of time spent on devices like smartphones, tablets, computers, and televisions.

While the study demonstrates an association, it does not prove causation. Other factors, such as socioeconomic status, parental education, and genetic predispositions, could also play a role in cognitive development. However, the findings underscore the need for further investigation into the long-term effects of early screen exposure.

Implications for Parents and Policymakers

“These findings emphasize the importance of parents and policymakers making well-informed decisions about healthy digital consumption that supports children’s cognitive development,” said Samson Nivins, the study’s first author and a postdoctoral researcher at Karolinska Institutet. Karolinska Institutet is a leading medical university in Sweden.

Recommendations for Healthy Screen Time

Experts generally recommend the following guidelines for screen time based on age:

• Under 18 months: Avoid screen time, except for video-chatting.
• 18-24 months: If introducing screens, choose high-quality programming and watch with your child.
• 2-5 years: Limit screen use to 1 hour per day of high-quality programming.
• 6 years and older: Establish consistent limits on screen time and ensure it doesn’t interfere with sleep, physical activity, and other healthy behaviors.

The American Academy of Pediatrics offers comprehensive guidance on screen time for children of all ages.

Future Research

The research team plans to continue monitoring the participants beyond age 14 to determine whether the association persists and to explore potential mediating factors. The study was funded by the Swedish Research Council and the Masonic Home for Children in Stockholm Foundation, with no reported conflicts of interest.

Key Takeaways

• Increased screen time at age 9 is associated with lower cognitive test scores at age 14.
• The study does not prove causation, but highlights a potential link.
• Parents and policymakers shoudl prioritize healthy digital consumption habits for children.
• Further research is needed to understand the long-term effects of screen time.

As digital technology continues to evolve, ongoing research is crucial to understanding its impact on children’s cognitive development and well-being. By staying informed and implementing evidence-based guidelines,parents and educators can definitely help children navigate the digital world in a healthy and productive way.

Publication date: 2025/12/08 15:5