There is an idea spreading on the internet that there are large racial IQ gaps- in particular the gap between white and black IQs- and that these gaps are predominantly due to genetic differences.
I believe that this ideology is not only extremely dangerous, but is also factually wrong. So, I will be devoting this post to bringing a wide range of evidence to disproving race realism.

>A. Evidence from Racial Admixture studies

We benefit from having an African American population in the United States with a wide range of mixed European ancestry. This means we can have a powerful test of the hereditarian hypothesis. If the hereditarian hypothesis accurately explains the difference in Black-White IQ, then African Americans with greater European ancestry should have higher IQs then African Americans with less European ancestry. So, what does the data show?

I will first present a study which recruited black twins from 181 different families in Philadelphia. Using blood group markers, the researchers were able to estimated the percent Caucasian ancestry of the kids before having them take a variety of intelligence tests. They found that there was absolutely no correlation between white ancestry and intelligence. [1]

A separate study used skin color as an estimate of Caucasian ancestry and looked at 437 African American participants’ performance on a 10-point vocabulary test. The study found no correlation between skin tone and test performance when controlled for family and childhood educational background [2].