Published: July 13, 2025
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Seb Jensen found that there is very strong dysgenic fertility in many poor countries using IQ-like data. Here's the same finding using educational categories.

Image in tweet by Emil Kirkegaard

@KirkegaardEmil Do you know if this holds true with data back a couple of generations before widely available birth control? Or maybe the studies control for that.

@yabert It's been true since 1850-1900 or so in the west.

@KirkegaardEmil There are also strong correlations between being poorly educated and having many children in New Zealand, and vice versa https://vjmpublishing.nz/?p=27...

@KirkegaardEmil The Dark Ages creep back, literally

@KirkegaardEmil Pathological empathy is a Great Filter.

@KirkegaardEmil Education stopped having anything to do with iq decades ago. By design!

@KirkegaardEmil That's not dysgenic. It just confirms female education reduces fecundity. So long as education and child bearing are exclusive this would happen even if education consisted of staring at a wall.

@KirkegaardEmil The most surprising thing is that how relatively little the TFR gap between the most educated Nigerians and the rest of the society they belong to, which almost totally buckles the trend. Perhaps some can enlighten me on this matter?

@KirkegaardEmil Again, the overwhelming evidence is Higher IQ people lead each nation's low fertility and that is the going to be the hardest aspect for conservatives to solve this issue.

@KirkegaardEmil The funny thing is that you can see this in data in the US (also note under 5% of White women don't graduate high school, 10% for blacks, and 35% for Hispanics).

Image in tweet by Emil Kirkegaard

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