Modest social media lowers scores

Tracking about 6,000 children from ages 9–10 into early adolescence, a JAMA study found that even roughly one hour of daily social media by age 13 correlated with 1–2 point lower reading and memory scores. Heavy use (3+ hours) correlated with 4–5 point declines. The finding is notable for showing a dose–response pattern at low usage levels. — It gives policymakers and parents concrete thresholds to consider when setting youth screen‑time guidance and school tech policies.