Gen Z has managed something no modern generation pulled off before. After more than a century of steady academic gains, test scores finally went the other direction. For the first time ever, a new generation is officially dumber than the previous one.
The data comes from neuroscientist Jared Cooney Horvath, who has spent years reviewing standardized testing results across age groups. “They’re the first generation in modern history to score lower on standardized academic tests than the one before it,” Horvath told the New York Post. The declines cut across attention, memory, literacy, numeracy, executive function, and general IQ. That’s not just one weak spot. That’s the whole darn dashboard blinking at once.
Horvath took the same message to Capitol Hill during a 2026 Senate hearing on screen time and children. His framing skipped the generational dunking and focused on exposure. “More than half of the time a teenager is awake, half of it is spent staring at a screen,” he told lawmakers. Human learning, he argued, depends on sustained attention and interaction with other people. Endless feeds and condensed content don’t offer either.
If its screens it should be effecting all the generations but at a certain point you stop taking standardized tests. Would be interesting for a societ if they kept on having them and you could see how cognitive decline worked.
If your brain was fully developed before screens came into existence, the screens couldn’t undo the learning you already had. However if you have spent your entire life viewing a screen and never learned to read, write, converse, dress yourself, etc and get to adulthood that way, your brain no longer has enough ability to fully erase that accumulated learning deficit. Many people under the age of 20 have large accumulated learning deficits. Unless babies, toddlers and young children are restricted from using them, the overall intelligence of the population will continue to decline. Apparently humans, in general, are very bad at learning from history. Through my life it was often asked how could Germans have allowed the Nazis to take over. We are seeing it in real time in the US. We also wondered how apparently advanced civilizations crumbled and their knowledge was lost. Again we are seeing in real time how that happens.
Screens is too reductive. Technology is a tool, and right now the way its used for children at home and in schools is causing a negative impact on their cognitive ability. Different generations use technology in different ways, and some generations haven’t used technology to replace social interaction but simply to aid it.