Ep. 369: Why Are We Getting Dumber? A Debate.

What It Covers

Cal Newport examines the reverse Flynn effect showing IQ scores declining since 2010, arguing smartphones destroyed attention capacity beyond post-literacy impacts. He provides four concrete strategies to counteract cognitive decline and gain competitive advantage in an increasingly distracted world.

Key Questions Answered

• •Post-literacy hypothesis: Reading rates declined drastically from the 1980s onward as television and internet replaced books, changing how brains process information and reducing analytical thinking capabilities. Northwestern study shows all education levels experienced IQ declines, but the sharpest drops occurred in 18-22 year olds who grew up entirely with smartphones during formative education years.
• •Attention degradation factor: Smartphones introduced around 2010 created a second cognitive hit beyond reduced reading. Hyperpalatable algorithmic content overwhelms short-term motivation circuits, reducing sustained concentration ability. This explains why IQ inflection points consistently appear around 2010 across multiple studies, not earlier when reading already declined significantly.
• •Delete attention-economy apps: Quit any app where the company profits from your usage time, including TikTok, Instagram, and algorithmic games. These platforms deliberately degrade concentration through hyperpalatable content designed to maximize engagement. For necessary apps like YouTube, use browser plugins to hide recommendations, transforming them into reference libraries without addictive features.
• •Kitchen phone protocol: Keep your phone plugged in one fixed location at home, typically the kitchen. Access it only when needed for specific tasks like checking texts or looking up information. After three to four days, your brain adapts and stops craving constant checking. This single change dramatically improves concentration without sacrificing phone utility or requiring complete digital abstinence.
• •Daily attention training: Practice Roosevelt dashes by setting a timer for ten minutes and focusing intensely on one difficult task, gradually increasing duration as it becomes easier. Alternatively, take walks without earbuds or devices, practicing sustained thought on a single problem. These exercises function like interval training for concentration, rebuilding cognitive capacity systematically over time.