A long-term study published in the World Journal of Pediatrics shows that when children watch screens may be just as crucial as how long they spend in front of them. Researchers tracked 502 children from infancy and found that heavy screen use during two specific stages—around age 1 and age 6—was linked to lower academic performance and weaker working memory years later.
- Age 1 (Infancy): Showed the strongest negative link to later working memory and school performance, likely because screen exposure replaces critical real-world interactions during early brain development.
- Age 6 (School Entry): While screen time at ages 2–3 showed no strong long-term link, the negative impact returned at age 6 as kids transitioned into formal schooling with higher cognitive demands.
- Cumulative Exposure: High total screen time across childhood also correlated with lower academic outcomes overall.
Guidelines vs. Practical Steps
Health experts advise no screen time under 18–24 months (except video calls) and under 1 hour daily for ages 2–5. While an extra hour of screen time may not dramatically impact an individual child, population-wide trends show a clear decline in academic performance. Parents can help by strictly limiting screen use during early infancy, resetting habits when formal school starts, and prioritizing content quality and co-viewing over strict time limits.
Source: Science Daily
