Doctor on How Screen Time Hurts Kids' Cognitive Development
Why Hacker News recommends it
HN commenters link it as a concise piece of expert testimony in threads on declining test scores and technology in education.
What it is
A five-minute C-SPAN clip of Dr. Jared Cooney Horvath testifying to a US Senate committee that screen time, including in schools, harms children's learning and cognitive development.
Recommended by 0 HN commenters across 0 different months, 2026 to 2026.
What Hacker News said
Cites myth_drannon · 2026-01 · on “Gen Z is the first generation less cognitively capable than their parents”
The article is basically a summary of Dr. Cooney Horvath testimony in the US congress and it is linked in the article. He talks about correlation vs causation in this part: [this video] There is plenty of research starting from 60's , introduce technology in the classroom and the learning goes down.
Cites Herring · 2026-02 · on “$30B for laptops yielded a generation less cognitively capable than parents”
Article didn't explain why tech doesn't work in education. It's biological. We evolved to learn from and interact with other humans, preferably the same group over a long time, so we really get to understand/mirror/like/support each other. Anyone who has tried Duolingo gets this. Drop me in China with Chinese friends and I'll learn 100x faster. [this video]
Cites artur_makly · 2026-04 · on “Scores decline again for 13-year-old students in reading and mathematics”
Full Senate Hearing on the Impact of Technology on America's Youth [LINK] Dr's Deposition on How Screen Time Hurts Kids' Cognitive Development [this video]
Cites mos_basik · 2026-05 · on “Citing 'severe' math deficits, UC faculty demand a return to SAT tests for STEM”
>I don't see how typing it into a computer is significantly different... I haven't read up on it much myself, but any discussion along the lines of this subthread re: "handwriting > typing" is probably discussing research that's starting to be talked about more and more in the past 5 years or so (maybe the pandemic and online learning accelerated interest?) here's a 5m clip of a neuroscientist presenting to the US Senate this year on correlation between dropping academic performance and use of tech in classrooms in many countries over many years, and asking for more research into mechanisms and causation. [this video] and here's a paper from a couple years ago describing differences in observed b
Cites chrismorgan · 2026-06 · on “Ask HN: What is your (AI) dev tech stack / workflow? (June 2026)”
The thread has gone from the front page now, so I’ll share my summary of my personal reasons: [LINK] . As regards learning, I haven’t written anything down, and doing it justice would take longer than I am willing to spend now. It’s not exactly the same area, but < [this video] > is five minutes of expert testimony to the U.S. Senate Commerce, Science, and Transportation Committee on 2026-01-15 about the resoundingly negative consequences of tech in education. There’s plenty of other well-established research in adjacent areas, things like just how valuable handwriting is for memory retention. It has been established for a long time that struggle is intrinsically valuable for human accomplishment