Sigh. The average African American is 72.95 percent sub-Saharan African, 22.83 p

Sigh.
The average African American is 72.95 percent sub-Saharan African, 22.83 percent European and 1.7 percent Native American.

The average african american IQ is 82-84 and most are of west and central african heritage.

–“Three IQ data sets show that studies of acceptably representative samples on tests other than the Progressive Matrices give a sub-Saharan Africa IQ of 69; studies of the most satisfactory representative samples on the Standard Progressive Matrices and on the Colored Progressive Matrices give IQs of 66 and 71.”–

In my work I tend to use 70 as the average african IQ, despite variation between some subgroups.

Of the four primary races that gives us
African 70, south eurasian 84 (+1SD), European 100(+1SD), East Asian (median) is 105(+.33SD).

If we assume average african americans are 20% (it’s 23%) white, and we understand that there was selection pressure among early slaves, we should expect the admixture to produce some reduction of the 30 point difference. That difference is 50% or 15 points. So 82-84 is higher than linearly expected, but we do not have good data on admixture vs IQ, yet other than IQ between races produces a median of the two. I suspect that it’s a dominant trait in cases of large differences, so persists regardless of subsequent percentages. But I have no good science to defend that.

Reply addressees: @trispora