@Justicar
Korean, Chinese and Japanese have a higher IQ on tests for cultural reasons because historically there was a tradition in China of promoting people based on how well they do on tests on the "Confucian" classics
So they have had a long standing tradition of studying for tests in order to get promoted at work
Knowing whether or not something was true or false was not important to them but only knowing what answer the test grader wanted
This is relatively new to Europeans
@Justicar
Vietnam, Thailand, Laos have a lower IQ than Japan, South Korean & China
People I have met from these lower IQ Southeast Asian cultures are better at trade school skills like carpentry and know gardening, camping and wilderness survival type skills better but are not as book smart
If I was stranded in the wilderness I would rather be with one of these wilderness smart people than book smart people
Urban blacks are usually bad at book smarts and also do not know wilderness survival