Some time ago there was a study released in public, which was blamed racist about the connection of av. IQ and wealth of the nation. I found a site that ranks the world countries by average IQ. (This site should be really popular and respected in Asia) http://www.brainrival.com/ Top three was today morning; Korea 99 Switzerland 96 Japan 92 These three are all countries which are doing quite well even in financial crisis? What do u think is the study totally insane...? or does it have truth in it? Does the IQ and wealth of the nation have connection??
Well... but has to remember that in Japan GDP per worker increased steadily even through the nineties crisis unlike in many other countries... ..although Japan's economy began to recover not until 2000´s...
I remember reading a psychology book that stated they were more accurate for youth testing than for adults.