Study: Cross-cultural genetics of g (IQ) and selection

http://www.sciencedirect.com/science/article/pii/S0191886916308042

Highlights

•National fertility and country-level general intelligence (G) negatively correlate.
•The frequencies of 8 SNPs that predict IQ also negatively correlate with fertility.
•Both findings are associated with Jensen effects.
•The SNP metagene negatively predicts fertility, when controlled for HDI.
•Global G should decline due to selection by − 0.253 points per decade.

Genetics seem to be keeping K-families smaller than r-types’, enough to moderately provision each child with high investment parenting. However, the effect is mild, suggesting it prevents Malthusian exhaustion.

One response to “Study: Cross-cultural genetics of g (IQ) and selection

1. Be civil. 2. Be logical or fair. 3. Do not bore me.

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