Minnesota Trans-Racial Adoption Study suggests that a lot of the difference is cultural and/or that white parents are better able to protect their children from the effects of prejudice.
I also have no idea what the practical difference of 4 IQ points might be.
I don’t know where you’d find people who were interested enough in racial differences in intelligence to do major studies on it, but who didn’t have preconceived ideas.
Minnesota Trans-Racial Adoption Study suggests that a lot of the difference is cultural and/or that white parents are better able to protect their children from the effects of prejudice.
I also have no idea what the practical difference of 4 IQ points might be.
I don’t know where you’d find people who were interested enough in racial differences in intelligence to do major studies on it, but who didn’t have preconceived ideas.