Tech
Study Links High Screen Time in Early Childhood to Lower Reading and Maths Scores
Children who spend more time on screens in their early years may perform worse in reading and mathematics during primary school, according to a new long-term study from Canada.
Published in the journal JAMA Network Open, the research tracked more than 3,000 children in Ontario from 2008 to 2023, examining how screen habits between infancy and middle childhood affected later academic outcomes. Researchers linked parent-reported data on screen use — including television, video games, and digital devices such as tablets and smartphones — to results from standardized tests taken in grades three and six, roughly at ages eight and eleven.
The findings showed that children with higher levels of total screen time tended to achieve lower scores in both reading and maths. The negative associations were strongest for time spent watching TV and using digital devices, while the study found no clear link between screen use and writing performance.
Only one in five parents reported that their children played video games, but among those who did, the effects appeared to differ by gender. Girls who played video games performed worse in grade three reading and maths than boys with similar habits.
Dr. Catherine Birken, senior child health scientist at Toronto’s SickKids Research Institute and one of the study’s authors, said the results highlight the need for early intervention. “These findings underscore the importance of developing healthy screen habits for young children and their families,” she said.
While the study adds to growing concern over excessive screen use, the authors cautioned that the results show a correlation, not causation. Because the data relied on parental reporting, it may also contain bias.
Experts outside the study urged restraint in interpreting the findings. Chris Ferguson, a psychology professor at Stetson University, said that while such studies are valuable, “the real-world implications are much less certain.” He noted that moderate screen use, particularly when educational or supervised, may not be harmful.
The World Health Organization (WHO) currently recommends that children aged two to four should have no more than one hour of screen time daily, and that babies under one year old should not be exposed to screens at all.
However, other research suggests that not all screen time is detrimental. A 2025 European Union working group report found that moderate and interactive screen use, especially when parents are involved, can support language development in young children.
Despite differing opinions, the new Canadian study reinforces ongoing calls for balance — encouraging families to manage children’s screen exposure while promoting offline activities that foster early learning.
Tech
Experts Question Impact of Australia’s New Social Media Ban for Children Under 16
Australia has introduced sweeping restrictions that prevent children under 16 from creating or maintaining accounts on major social media platforms, but experts warn the measures may not significantly change young people’s online behaviour. The restrictions, which took effect on December 10, apply to platforms including Facebook, Instagram, TikTok, Snapchat, YouTube, Twitch, Reddit and X.
Under the new rules, children cannot open accounts, yet they can still access most platforms without logging in—raising questions about how effective the regulations will be in shaping online habits. The eSafety Commissioner says the reforms are intended to shield children from online pressures, addictive design features and content that may harm their health and wellbeing.
Social media companies are required to block underage users through age-assurance tools that rely on facial-age estimation, ID uploads or parental consent. Ahead of the rollout, authorities tested 60 verification systems across 28,500 facial recognition assessments. The results showed that while many tools could distinguish children from adults, accuracy declined among users aged 16 and 17, girls and non-Caucasian users, where estimates could be off by two years or more. Experts say the limitations mean many teenagers may still find ways around the rules.
“How do they know who is 14 or 15 when the kids have all signed up as being 75?” asked Sonia Livingstone, a social psychology professor at the London School of Economics. She warned that misclassifications will be common as platforms attempt to enforce the regulations.
Meta acknowledged the challenge, saying complete accuracy is unlikely without requiring every user to present government ID—something the company argues would raise privacy and security concerns. Users over 16 who lose access by mistake are allowed to appeal.
Several platforms have criticised the ban, arguing that it removes teenagers from safer, controlled environments. Meta and Google representatives told Australian lawmakers that logged-in teenage accounts already come with protections that limit contact from unknown users, filter sensitive subjects and disable personalised advertising. Experts say these protections are not always effective, citing studies where new YouTube and TikTok accounts quickly received misogynistic or self-harm-related content.
Analysts expect many teenagers to shift to smaller or lesser-regulated platforms. Apps such as Lemon8, Coverstar and Tango have surged into Australia’s top downloads since the start of December. Messaging apps like WhatsApp, Telegram and Signal—exempt from the ban—have also seen a spike in downloads. Livingstone said teenagers will simply “find alternative spaces,” noting that previous bans in other countries pushed young users to new platforms within days.
Researchers caution that gaming platforms such as Discord and Roblox, also outside the scope of the ban, may become new gathering points for young Australians. Studies will be conducted to assess the long-term impact on mental health and whether the restrictions support or complicate parents’ efforts to regulate screen time.
Experts say it may take several years to determine whether the ban delivers meaningful improvements to children’s wellbeing.
Tech
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