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Average IQ by Country

Source: brainstats.com.

These results should be used with extreme caution as they are controversial and subject to debate!

These controversial studies argue that the IQ is associated with per capita income and economic indices. Although high income countries are among the top performers, much lower income countries such as China and Mongolia are also among the top performers.

Another factor could be education expenditures. We almost always consider high education expenditures countries have an intelligent population. But we found again countries with medium to low educational expenditures in the top of the ranking.

Some researchers consider that the climate could be an explanation. In general, a hot climate is considered a disadvantage for the development of intelligence because of the high physical energy demand and the resulting stress. We can again argue that it can’t be generalized to the ranking.

An important remark is that studies can’t also concluded that the IQ is influenced by a particular race. In some cases, differences within population groups were found, but all differences could be attributed to other factors.



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