達爾文認為人類智力完全可以用進化論來解釋，偏高智力的個體對人與自然的交互過程中有較好的認知、適應、生存能力和性選擇力，更具有遺傳優勢。服從進化論的東西，一定是在生存壓力下選擇出來的。比如歐洲猶太人就是因為被限製在從事商業、金融和其他非體力勞動密集型行業，再加上近親結婚造成的高IQ。
下麵的文章和穀歌查詢也有一些類似結果。
https://www.researchgate.net/figure/Human-capital-IQ-and-genetic-distance-with-emphasis-on-continents_fig2_275463969
https://www.pnas.org/doi/full/10.1073/pnas.0507611102?doi=10.1073/pnas.0507611102
另外google 找的：
The relationship between IQ and distance from Africa is complex, and there are multiple factors that can influence IQ, including location, genetic distance, and latitude:
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Countries that are closer together geographically tend to have more similar IQs than countries that are farther apart.
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Genetic distance is a proxy for cultural distance, and is positively correlated with IQ differences.
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Latitude can influence cognitive ability, even in tropical climates. A study of seven regions in Sudan found a trend of lower IQs in the southern region, compared to the northern regions.
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Some studies have found that the low IQ scores in Sub-Saharan African countries drive the correlation between national IQ and geographic distance.
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Some theories predict that people who settled farther away from the EEA evolved higher levels of intelligence. However, Sub-Saharan Africans are predicted to have lower general intelligence than people in Europe, Asia, and the Americas.
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