Emil O W Kirkegaard

Linda Gottfedson has also made. http://www.udel.edu/educ/gottfredson/reprints/2009fallacies.html …

I agree it's extremely important to recognize that heritability is a thing and that intelligence testing has very strong reliability and validity properties…this is increasingly recognized among policymakers. That does not extend to claims about group differences.

If I took a set of people from the top half of the IQ distribution and dropped them on an island, there would then be a group with a higher average IQ, entirely due to genetic differences.

Well regression to the mean can be a more or less strong effect depending on how strong the effect of luck was in the first place.