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[Why Are We Getting Dumber and What to Do About It]-[Ep. 369: Why Are We Getting Dumber? A Debate.]

Deep Questions with Cal Newport · B2 · 2025-09-08

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📋 Summary

The Reverse Flynn Effect: A Cognitive Decline

For decades, society operated under the "Flynn effect," an observation by James Flynn that IQ scores globally were consistently rising post-World War II. However, recent data suggests a dramatic reversal. A 2023 study from Northwestern University confirms that IQ scores began a steady decline around 2010. This "reverse Flynn effect" is not isolated; it spans various education levels and genders, suggesting a systemic shift in how human intelligence is being nurtured—or neglected.

The Post-Literacy Hypothesis

A primary explanation for this decline is the "post-literacy hypothesis." Critics like Neil Postman and James Marriott argue that the shift from a "lexicographic culture" (centered on books and deep reading) to a visual/audio-based media culture (television and internet) has fundamentally altered our cognitive architecture. Books require "logical, rational, and dense" processing, serving as a form of intellectual cross-training. By moving away from the written word, we have lost the ability to engage in the sophisticated analytical discourse required for high-level reasoning, directly impacting IQ test performance.

The Attention Hypothesis: The Smartphone Factor

While post-literacy explains a decline in capability, Cal Newport introduces an overlooked factor: the "attention hypothesis." The ubiquity of smartphones since 2010 has introduced "hyper-palatable algorithmic content" that constantly overwhelms our short-term motivation circuits. This does not just change how we process information; it actively degrades our ability to sustain concentration. The data shows that 18-to-22-year-olds—the first generation to grow up entirely within the smartphone era—have seen the sharpest declines in IQ, suggesting that the inability to focus prevents us from utilizing even the cognitive processing power we still possess.

Concrete Takeaways: How to Get Ahead

To combat this "post-concentration society," Newport suggests four specific strategies to reclaim your cognitive edge:

  1. Quit Addictive Apps: Delete any application where the company profits directly from your time-on-device (e.g., TikTok, Instagram). These are engineered to degrade your motivation systems.
  2. Join the 'Attention Resistance': For tools you must use, strip away their addictive features. Use browser plugins to hide recommendations or delegate social media posting to a third party so you never personally engage with the feed.
  3. The Kitchen Rule: Keep your phone in the kitchen when at home. By removing the phone as a constant companion, you break the impulse to check it during every moment of boredom, allowing your brain to adapt to solitude.
  4. Train Your Attention: Treat concentration like a muscle. Utilize "Roosevelt dashes"—short, ultra-intense bursts of work (starting at 10 minutes)—and engage in "productive meditation" by taking walks without digital distractions to practice sustained focus.

Conclusion: The Opportunity

While the reverse Flynn effect signals a troubling trend toward collective stupidity, it offers a distinct advantage for the individual. By systematically training your ability to concentrate, you are essentially taking an "IQ-boosting pill" relative to the rest of the distracted population. In a world increasingly dominated by shallow, fragmented media, the ability to engage in deep, sustained thought is a superpower that will inevitably open more doors and provide a deeper, more meaningful life.

🎯Key Sentences

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IQs weren't going up anymore.
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That makes sense.
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There's not any meaningful difference there between genders.
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We stopped reading.
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It's like, I'm not a relativist.
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📝Key Phrases

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stumbled across
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floored by
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getting ahead
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take a turn
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load up
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📖 Transcript

I recently stumbled across a fascinating 2024 essay written by a Norwegian psychology professor.
In this essay, he talks about how he was asked to teach a course about intelligence.
And he was excited about this because he used to teach that class a lot, but hadn't recently.
So he thought what he would do is he would open this class the way he always had before, by talking about the so-called Flynn effect, which is this observation, originally made by James Flynn, that IQs worldwide have been rising since roughly the post World War II period.
So here's what the professor wrote in his essay.
The Flynn effect has been rising suddenly for so long that I thought I'd bring an updated graph an updated graph to 2024 numbers, because it's always fun to tell students that their generation is the smartest people who would ever live.

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