新华社斯德哥尔摩12月10日电（记者朱昊晨 徐谦）瑞典卡罗琳医学院参与的一项国际研究显示， 经常使用社交媒体的儿童，其注意力会随时间推移出现下降趋势，而看电视、玩电脑游戏等其他屏幕活 动未发现类似关联。该研究成果已发表在美国《儿科开放科学》杂志上。 卡罗琳医学院日前发布的新闻公报介绍说，过去15年间，随着电子屏幕和数字媒体使用大幅增加， 在许多国家，注意力缺陷多动障碍（俗称多动症）诊断量也明显上升。科研团队希望探究不同屏幕使用 习惯与相关症状之间是否存在关联。 这项由卡罗琳医学院和美国俄勒冈健康与科学大学合作开展的研究，纳入了8324名居住在美国、起 始年龄为9至10岁的儿童，并对其进行了为期4年的追踪随访。儿童定期报告自己使用社交媒体、看电视 以及玩电脑游戏的时长；家长评估孩子的注意力水平以及多动、冲动等行为表现。 科研人员表示，社交媒体往往意味着内容快速切换，并 伴随 源源不断的消息和通知，这些持续的 干扰会削弱大脑保持专注的能力，可在一定程度上解释上述关联。 科研人员强调，研究结果并不意味着所有使用社交媒体的儿童都会出现注意力问题，但提示有必要 进一步讨论年龄限制和平台设计方式等问题。科研团队计划继续追 ...

Core Viewpoint - The article discusses a study published in Nature that reveals adolescents with anxiety and depression spend more time on social media but report lower satisfaction with their online experiences [2][3]. Summary by Sections - **Study Overview**: The research conducted by Cambridge University analyzed data from a 2017 NHS survey involving 3,340 adolescents aged 11-19, focusing on their social media usage and feelings towards it [2]. - **Mental Health Findings**: 16% of participants had at least one mental health issue, with 8% experiencing "internalizing" problems like depression and anxiety, and 3% having "externalizing" issues such as ADHD [3]. - **Social Media Usage**: Adolescents with mental health issues spend an average of 50 minutes more on social media daily compared to their peers, and they are more likely to feel dissatisfied with aspects of their online interactions, such as the number of online friends [3]. - **Comparative Behavior**: Those with "internalizing" mental health issues are more prone to social comparison online, influenced by feedback metrics like likes and shares, and find it harder to control their social media usage [3]. - **Parental Guidance**: The findings serve as a warning for families, suggesting that parents should carefully monitor their children's social media use if they exhibit signs of anxiety or depression [3].