Human intelligence evolved in Africa. Joseph L. Graves Jr. breaks down the prejudiced ideas that led some biologists to think otherwise.
Famous evolutionary biologists like Alfred Russell Wallace proposed that humans got smarter as they learned to live in colder places. But there are a few big caveats in that thinking.A Voice in the Wilderness: A Pioneering Biologist Explains How Evolution Can Help Us Solve Our Biggest Problems
Whether Miller’s model is true or not, it is important to recognize that the majority of behavioral traits and intelligence of our species evolved long before anyone left Africa. We spent about two-thirds of our 300,000-year existence there. This time depth also explains why the majority of the genetic variation found in our species is found in Africans. There is also a direct linear relationship between a population’s migratory distance from Africa and its genetic variation.
Despite its obvious problems, the idea that climate drove evolution still seems to have some traction. A recent paper argued for the importance of cold winters in spurring the evolution of intelligence in Eurasians. The paper suggested that during the last glacial maximum , eastern European populations displayed remarkable technical innovations that allowed them to survive the harsh winter conditions of their latitudes.
survival and reproduction. Their challenges were different , but they were no less sophisticated than those associated with living in temperate zones. chance of sustained selection of any single kind resulting in an “accidental” evolution of superior intelligence in one group compared to others is so low it simply isn’t worth calculating. In my paper responding to Reich’s accusation that I was a defender of orthodoxy, I gave a detailed explanation of this problem for the accidental evolution of racialized intelligence.
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