The 20th century witnessed a dramatic increase in IQ, as much as 3 points per decade (see Are you smarter than Aristotle? Part I). The fact that IQ scores increased so much in such a short amount of ...
The Flynn Effect -- the finding that IQ rose quite a bit during the 20th century -- raises quite a few paradoxes. Working backwards, the average IQ of people living in 1900 would be just under 70.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback