由Inserm和新加坡国立大学研究团队发布的一项纵向研究表明，儿童在特定年龄阶段的屏幕暴露可能对其后续认知发展产生显著影响1。该研究追踪了502名儿童从1岁至8岁期间的屏幕使用情况，发现婴幼儿期和学龄初期的较多屏幕接触与9岁时学术表现下降和10.5岁时工作记忆能力减弱存在关联1。其中，1岁时的屏幕暴露显示了最强的效应量1。
研究进一步揭示了屏幕时间影响的特点1。在2岁和3岁时的屏幕使用未显示出显著关联，但这种关联在儿童6岁时重新出现1。这表明屏幕使用的时间点可能与使用时长同样重要1。相关研究已发表在《World Journal of Pediatrics》2026年第22卷第5期1。
根据世卫组织和美国儿科学会的建议，应避免18至24个月前的儿童使用屏幕，2至5岁儿童的屏幕时间应限制在每天不足1小时1。该研究获得了新加坡国家研究基金会、新加坡卫生部国家医学研究委员会和法国国家研究局的共同支持1。
A longitudinal study tracking 502 children from infancy through middle childhood has identified specific developmental periods when screen exposure may have the greatest impact on future academic and cognitive outcomes.1 Researchers from institutions including Zhejiang University found that heavier screen use at age 1 and again at age 6 was associated with lower academic performance at age 9 and weaker working memory at age 10.5.1 The findings suggest that the timing of screen exposure may be as significant as the amount of time spent on screens, with screen exposure at age 1 showing the strongest effect.1
The study revealed a complex pattern across childhood development.1 While screen use at ages 2 and 3 did not show significant associations with later outcomes, the connection between screen exposure and developmental measures reappeared at age 6.1 These results align with existing health guidance from the World Health Organization and the American Academy of Pediatrics, which recommend avoiding screens before 18 to 24 months of age and limiting screen time to less than one hour daily for children aged 2 to 5 years.1 The research was published in World Journal of Pediatrics, volume 22, issue 5, in 2026, and was supported by the National Research Foundation of Singapore, Singapore's National Medical Research Council, and France's National Research Agency.1
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