On: The ‘Geno-Economists’ Say DNA Can Predict Our Chances of Success

[nabla9]

It's easy to misunderstand what heritable or even genetically heritable means.

Consider just few hypothetical ways genes can increase g-factor:

* Metabolic trait increases nutrition intake in high calorie low nutrition junk food environment. This leads to faster brain development.

* Improved immune system against certain parasites that makes individual healthier and leads to statistically higher g-factor.

Genes that improve intelligence can change from generation to generation and be different in different geographic areas.

[asianthrowaway → nabla9]

Huh, what? Are you talking about the appearance of new genetic mutations? I think evolutionary timescales are a bit longer than a few generations.

Anyway, I don't understand how this is supposed to explain what heritability is...

[nabla9 → asianthrowaway]

No. I was talking about existing genes interacting with rapidly changing environment.