Genetic differences and school readiness.

Based on a wide range of direct and indirect evidence, particularly work by Klaus Eyferth and James Flynn, the author concludes that the black-white gap is not substantially genetic in orgin. In studies in 1959 and 1961, Eyferth first pointed to the near-disappearance of the black-white gap among children of black and white servicemen raised by German mothers after World War II. In the author’s view, Flynn’s exhaustive 1980 analysis of Eyferth’s work provides close to definitive evidence that the black disadvantage is not genetic to any important degree.