Finnish Study Links 8 Years of Screen Time to Better Teen Cognition

2 articles · Updated · spacedaily.com · Aug 20

260 Finnish children tracked from ages 6-8 to nearly 16 scored better on cognitive tests if they had accumulated more screen time over eight years.
The PANIC study used heart-rate and motion wearables, questionnaires and computerized tests of learning, attention and working memory, overturning researchers’ expectation that more screen use would predict weaker performance.
Petri Jalanko said the finding suggests screen time is not inherently harmful; the team suspects content matters, with problem-solving, creative or learning-heavy use differing from passive viewing.
The study is observational, so it cannot show screens caused better cognition, and the authors say household or child traits could explain both heavier use and stronger scores.
Physical-activity results were also mixed—more light activity helped girls’ working memory, while some higher activity measures in boys aligned with weaker scores—underscoring that simple anti-screen claims outpace the evidence.