Al Fin links to a GDP predictor than makes a "couple tweaks" to national IQ and economic freedom. Keeping in mind that a correlation of 0.4 or higher is considered pretty strong in the social sciences, what would you guess the correlation for this set of predictors is? If you said anything below 0.97, you’ve underestimated the power of differences in human intelligence.
Here’s Barking up the Wrong Tree summarizing the results:
For each one-point increase in a country’s average IQ, the per capita GDP was $229 higher. It made an even bigger difference if the smartest 5 percent of the population got smarter; for every additional IQ point in that group, a country’s per capita GDP was $468 higher.
I think focusing on the top 5% of people in a country is interesting.
Anyway, it seems to me that if you ever want to cite any research from any social science at this point, you have accept the truth of HBD. I certainly have never seen a social science conclusion stronger than this one.
The haters (kidding, sort of) will fall back on alternative explanations, but I don’t think they work. The way I see it is this: 1) the easiest way to destroy your economy is to radically limit economic freedom and 2) if you want really high levels of income, you need smart people. There’s no other honest way to interpret the results, in my opinion. In other words, an economy made up solely of Australian Aborigines is not going to dominate with respect to levels of income under any sort of economic arrangement – super free economies still can’t make dumb populations into hyper-productive ones.
A conclusion this strong also shows you how much people lie. Think of everyone asking us to spend trillions to reduce global warming because of the "science." We’ve already spent trillions trying to make people smart, which is unlikely to be more successful than spending trillions to make people taller, and anyway, the "science" here is stronger than the "science" there. The same people that worship at the alter of global warming science, won’t even allow themselves to think of the conclusions of this study. So much for scientific integrity.