But I think the performance on IQ tests for people at the top have been going up, at least until recently. It could be, however, that you are right and the increase in IQ test performance reflects real gains in intelligence for those in the bottom, but fake “just getting better at taking tests because of repeated exposure to tests” gains for everyone else.
But I think the performance on IQ tests for people at the top have been going up, at least until recently. It could be, however, that you are right and the increase in IQ test performance reflects real gains in intelligence for those in the bottom, but fake “just getting better at taking tests because of repeated exposure to tests” gains for everyone else.