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問題はスクリーンタイムの長さではなく、スクリーンの使い方である:最新の研究が家族にとって意味すること

It's Not About Screen Time—It's About Screen Type: What New Research Means for Your Family

子どものスクリーンタイムは「何時間か」より「どう使うか」が重要――最新研究が示す、時間制限だけでは守りきれない子どもの心と発達のリスクとは。
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Many parents ask one simple question: “How many hours of screen time are okay?” New research says the better question is: “What kind of screen use is this, and how does it affect the child?” In a major review published in JAMA Pediatrics on March 9, 2026, researchers combined 153 long-term studies. They found modest but steady links between digital media use and poorer child development. Social media was connected with more depression, behavior problems, self-injury, substance use, lower self-image, and weaker school results. But the study also showed that not all screen use is the same; video games were linked to more aggression, yet also to small gains in attention and self-control skills. (jamanetwork.com)

Another important clue came from a JAMA study published on June 18, 2025. It followed 4,285 young people in the United States. The researchers found that high or rising “addictive” use of social media, phones, or video games was linked to more suicidal thoughts and actions, and to worse mental health. However, total screen time by itself was not linked to these outcomes. In other words, hours alone may miss the real problem. Feeling unable to stop, checking again and again, and using media to escape stress may matter more than the clock. (jamanetwork.com)

This is why experts are changing their advice. In January 2026, the American Academy of Pediatrics said families should look beyond time limits and think about the whole picture: the child, the content, sleep, stress, communication, and whether media crowds out family time or exercise. The group also warns that design features like endless scrolling can disturb sleep, mood, and attention. The National Academies reached a similar point: social media is not simply “good” or “bad.” It affects different teenagers in different ways, and platform design, bullying, and offline support all matter. (aap.org)

So, what should families do? A good first step is not only asking “How long?” but also “Why this app?” and “How do you feel after using it?” The U.S. Surgeon General says children and teens who spend more than three hours a day on social media face about double the risk of mental health problems, so basic limits still matter. But the newest research adds something important: healthy habits, good sleep, open conversation, and noticing signs of compulsive use may protect children better than a timer alone. (hhs.gov)

by EigoBoxAI
作成:2026/05/15 21:02
レベル:初級 (語彙目安:300〜1000語)

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