Gen Z is the first generation less cognitively capable than their parents. Denmark has the solution.
Nearly every parent hopes their child will be better off than they are: smarter, more secure, and more well-adjusted. Many parents see this as a stamp of successful parenting, but something has changed for children growing up today. While younger generations are known for their empathy, their cognitive capabilities seem to be lagging behind those of previous generations for the first time in history.
Dr. Jared Cooney Horvath, a teacher turned cognitive neuroscientist who focuses on human learning, appeared before Congress to discuss concerns about cognitive development in children. In his address to the members of Congress, he says, "A sad fact that our generation has to face is this: our kids are less cognitively capable than we were at their age. Since we've been standardizing and measuring cognitive development since the late 1800s, every generation has outperformed their parents, and that's exactly what we want. We want sharper kids."
Student smiling in a classroom, working on a laptop.Photo credit: Canva
Horvath explains that the reason this happens is that each generation has gone to school longer than the previous generation. Gen Z is no exception to the longer duration of time spent in school, but they're the first ones who aren't meeting this normal increase in cognitive development. According to the cognitive neuroscientist, the decline is due to the introduction of screens in the classroom, which started around 2010.
"Across 80 countries, as Jean was just saying, if you look at the data, once countries adopt digital technology widely in schools, performance goes down significantly. To the point where kids who use computers about five hours per day in school for learning purposes will score over two-thirds of a standard deviation less than kids who rarely or never touch tech at school," Horvath reveals.
In most cases, the decline in performance doesn't result in better strategies. The neuroscientist shares that the standardized testing has been adjusted to accommodate lower expectations and shorter attention spans. This is an approach that educators, scientists, and researchers went to Capitol Hill to express wasn't working. But not every country is taking the approach of lowering standards to meet lowered cognitive ability. Denmark went in the opposite direction when it realized their students were slipping behind.
France24 recently interviewed educators in Denmark following their seemingly novel approach to students struggling with cognitive development. Since the beginning of the 2025/2026 school year, Denmark has not only been having students turn in their cellphones, but they've also taken tablets, laptops, and computers out of the classroom. No more digital learning for the majority of the school day. Danes went old school by bringing back physical textbooks, workbooks, and writing assignments. The results have been undeniable. Even the students can't seem to deny the success of the countrywide shift in educational approach.
"I think the biggest issue has been that, because we kind of got rid of the books and started using screens instead, that we've noticed that a lot of the kids have trouble concentrating, so it's pretty easy to swipe with three fingers over to a different screen and have a video game going, for example, in class," Copenhagen English teacher, Islam Dijab tells France24.
Now, instead of computers being part of every lesson, Denmark uses computers very sparingly and with strict supervision. One student says that it has been nice not having screen time at school because she loves to read and write. But it wasn't just the lack of attention span children were developing, they were also developing low self-esteem and poor mental health due to the amount of time spent on devices.
Students focused and ready to learn in the classroom.Photo credit: Canva
The data showing the negative impact of screens on teens' brains has prompted a nationwide change in Denmark that extends outside of the classroom. Afterschool activities are eliminating or extremely limiting electronic use. There is also a national No Phone Day that encourages everyone to put away their devices for the day, and Imran Rashid, a physician and digital health expert, is petitioning parliament to ban social media use for children under the age of 15. The no phone movement in Denmark is a nationwide effort that hopes to right the ship before another generation feels the effects.
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Reddit tried an experiment to curb hate speech. The results are fascinating.
In 2015, Reddit decided to run some of the haters out of town.
Image by Rebecca Eisenberg/Upworthy.
The "homepage of the Internet," known for its wholesale embrace of free debate, banned several of its most notorious forums, including r/coontown, a hub for white supremacist jokes and propaganda, and r/fatpeoplehate, a board on which users heaped abuse on photos of fat people.
Critics accused the site of axing the subreddits for the "wrong" reasons — demonizing unpalatable speech rather than incitement to violence. Others worried the ban would be ineffective. Wouldn't the trolls just spew their hate elsewhere on the site?
Thanks to a group of Georgia Tech researchers, we now have evidence that the ban worked.
Their paper, "You Can’t Stay Here: The Efficacy of Reddit’s 2015 Ban Examined Through Hate Speech," found that not only did banning the forums prompt a large portion of its most dedicated users to leave the site entirely, the redditors who did stay "drastically [decreased] their hate speech usage."
The researchers analyzed over 650 million submissions and comments posted to the site between January and December 2015. After arriving at a definition for "hate speech," which they determined by pulling memes and phrases common to the two shuttered forums, they observed an 80% drop in racist and fat-phobic speech from the users who migrated to other subreddits after the ban. 20-40% of accounts that frequently posted to either r/coontown or r/fatpeoplehate became inactive or were deleted in that same period.
"Through the banning of subreddits which engaged in racism and fat-shaming, Reddit was able to reduce the prevalence of such behavior on the site," the paper's authors concluded.
The researchers have a few theories about why the ban may have worked.
Those who migrated to other subreddits, they speculate, became beholden to existing community norms that restricted their ability to speak hate freely.
Reddit co-founder and executive chairman Alexis Ohanian. Photo by Jerod Harris/Getty Images.
They also cite Reddit's effective removal of copycat forums (r/fatpeoplehate2, r/wedislikefatpeople, etc.) before they could reach critical mass.
Creating secure online spaces is a difficult problem. This new research provides at least one possible solution.
Any attempt to moderate an open web forum, the researchers argue, will inevitably have to balance protecting free expression with the right of people to exist on the internet without fear of abuse. A June Pew research poll found that 1 in 4 black Americans reported having been harassed online because of their race, compared with 3% of white Americans.
"The empirical work in this paper suggests that when narrowly applied to small, specific groups, banning deviant hate groups can work to reduce and contain the behavior," the authors wrote.
For vulnerable people who, like most, are living increasingly online lives, it's a small measure of relief.
Correction 9/13/17: This story was updated to identify Alexis Ohanian as Reddit's co-founder and executive chairman, not CEO.