Sharper, dividing humanity into the subpopulations “male” and “female” does not result in average IQ differences, though brain-volume does differ, as does the visuo-spatial vs verbal component of intelligence, and the standard deviations for them differ as well. It is usually an assumption of statistics that large enough groups with arbitrary divisions (say, by a “natural experiment”) will not differ on average.
In which geographic region were you thinking of where darker skin indicates higher intelligence?
Daniel Yokozimo, nobody had been discussing Lynn yet, so you should have mentioned that that the book you are referring to is called “IQ and the Wealth of Nations” so other readers aren’t left in the dark. I believe if you remove all the data they made up/estimated the result is pretty much the same, although I haven’t actually read the book myself. If you know of a study finding no correlation between IQ and GDP or GDP growth, provide a link. The reason people are interested in IQ it because it has more predictive power than any other variable in psychology and possibly any social science. It isn’t just employer preference, it also predicts likelihood to be in an accident on the job (within professions).
Sharper, dividing humanity into the subpopulations “male” and “female” does not result in average IQ differences, though brain-volume does differ, as does the visuo-spatial vs verbal component of intelligence, and the standard deviations for them differ as well. It is usually an assumption of statistics that large enough groups with arbitrary divisions (say, by a “natural experiment”) will not differ on average.
In which geographic region were you thinking of where darker skin indicates higher intelligence?
Daniel Yokozimo, nobody had been discussing Lynn yet, so you should have mentioned that that the book you are referring to is called “IQ and the Wealth of Nations” so other readers aren’t left in the dark. I believe if you remove all the data they made up/estimated the result is pretty much the same, although I haven’t actually read the book myself. If you know of a study finding no correlation between IQ and GDP or GDP growth, provide a link. The reason people are interested in IQ it because it has more predictive power than any other variable in psychology and possibly any social science. It isn’t just employer preference, it also predicts likelihood to be in an accident on the job (within professions).
Its a bit more complex than that.