Thinking that “intra-race” – a sociological concept – is a meaningful concept in biology, is a brown M&M. It suggests the research probably isn't any good. Sur

Thinking that “intra-race” – a sociological concept – is a meaningful concept in biology, is a brown M&M. It suggests the research probably isn't any good. Sure, in places like the US, or Apartheid-era South Africa, “race” might have enough of an impact on people's lives that controlling for it is a quick and easy way to clean up your data. But absent social factors, by itself, there's no reason to believe that it's something you need to control for; and if you have access to that information, there are always more direct factors you can control for.