Weird. I actually spent a few hours today reading about this.
The research suggests that intelligence and brain size have a strong genetic component. This is even when other things like culture, education, childhood nutrition, etc are accounted for. For example, there's a steady and repeatedly confirmed gap between average white American and black American IQs. The average IQ of half-black and half-white mixed people is right in the middle of that gap, and the number moves predictably in the appropriate direction when the ratio of that mixture is something other than 1:1. And yes, this is when upbringing is accounted for. There have been studies on the subject involving interracial adoption from infancy.
Of course a lot of people will dismiss this outright because they find the concept offensive, but the science doesn't lie.
Are there superior or inferior races or cultures?
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Weird. I actually spent a few hours today reading about this.
The research suggests that intelligence and brain size have a strong genetic component. This is even when other things like culture, education, childhood nutrition, etc are accounted for. For example, there's a steady and repeatedly confirmed gap between average white American and black American IQs. The average IQ of half-black and half-white mixed people is right in the middle of that gap, and the number moves predictably in the appropriate direction when the ratio of that mixture is something other than 1:1. And yes, this is when upbringing is accounted for. There have been studies on the subject involving interracial adoption from infancy.
Of course a lot of people will dismiss this outright because they find the concept offensive, but the science doesn't lie.