If you feel that the world is becoming less intelligent in some way, the data from Norway, Denmark, Finland, France, Britain, and Australia agrees with you, with average IQ scores in those countries f

The finding is one of the most carefully documented and least understood in contemporary cognitive science. For most of the twentieth century, average IQ scores in industrialised countries rose at a consistent pace. The increase, documented across multiple test instruments and across most of the developed world, was approximately three IQ points per decade between […]