Being a psycologist makes you stupid...
"Similarly, as average IQ in Western societies increased throught the 20th century..."
IQ is defined such that the average IQ is always 100. If your IQ is 150, you have 150% the intelligence of an average bod. If your IQ is 50, you have half the intelligence of an average bod (of the same age).
By definition, the average IQ is 100. It can't increase.
Biting the hand that feeds IT
