In my opinion, Wikipedia and all other conversation leading to social stratification should be legally banned. It accomplishes nothing constructive and pigeonholes ethnic groups into superior/inferior categories that affect their collective psychology and social standing. The variation of ability amongst every group crisscrosses among all of the world's people. In the near future, genetic research will uncover the genetic markers that control cognition and then the smartest geniuses of history will become comparative "retards" to the average of that time.
"IQ differences outside of the USA
According to Richard Lynn and others, racial differences in IQ scores are observed around the world. A commonly-cited review by Richard Lynn lists IQ scores for East Asians (105), Europeans (99), Inuit (91), Southeast Asians and Amerindians (87 each), Pacific Islanders (85), South Asians/North Africans (84), Non-Bushmen sub-Saharan Africans (67), Australian Aborigines (62) and Bushmen (54)."
I've always found IQ tests to be fundamentally flawed because they are omitting components of intelligence that are obviously not being measured properly. The fact that several groups have measured IQs below 70 is a testament to this. The idea that entire nations have an average intelligence below retardation (IQs <=70 are considered retarded) is ludicrous. The example I must point out are the Bushmen with an average IQ of 54. The idea that hunter gatherers who can survive in the wilderness against lions, hyenas, leopards, etc, and claimed to barely have enough intelligence to put socks on is a joke. This is just common sense. IQ tests do test cognitive ability, but only to the extent that the thinking process of the people being tested think and rationalize in the ways required to solve the questions of the IQ test. The fact that the Flynn Effect is used to explain variations of IQ among the same groups between generations and their related educational and socioeconomic situations is very telling.