I’ve been reading the blog JewAmongYou, and found this:
J. Philippe Rushton wrote in his book “Race, Evolution and Behavior” writes (pg. 30,31):
Trans-racial Adoption Studies
The best evidence for the genetic basis of race-IQ differences comes from trans-racial adoption studies of Oriental children, Black children, and Mixed- race children. All these children have been adopted by White parents at an early age and have grown up in middle-class White homes.
One well known trans-racial adoption study is Sandra Scarr’s Minnesota project. The adopted children were either White, Black, or Mixed- race (Black-White) babies. The children took IQ tests when they were seven years old and again when they were 17.
In their initial report, the authors thought that their study proved that a good home could raise the IQs of Black children. At age 7, their IQ was 97, well above the Black average of 85 and almost equal to the White average of 100. However, when the children were retested at age 17, the results told another story (reported in the 1992 issue of Intelligence).
At age seven, Black, Mixed- race, and White adopted children all had higher IQ scores than average for their group. Growing up in a good home helped all the children. Even so, the racial pattern was exactly as predicted by genetic theory, not by culture theory. Black children reared in these good homes had an average IQ of 97, but the Mixed- race children averaged an IQ of 109, and the White children an IQ of 112.
The evidence for genetic theory got stronger as the children grew older. By age 17, the IQs of the adopted children moved closer to the expected average for their race. At age 17 adopted White children had an IQ of about 106, Mixed- race adoptees an IQ of about 99, and adopted Blacks had an IQ of about 89. IQ scores are not the only evidence in this study. School grades, class ranks, and aptitude tests show the same pattern.
What do almost all successful “black” Americans have in common? Below, from left to right: the first “black” president; the first “black” attorney general; the first “black” secretary of state; the first “black” female secretary of state; and the first “black” cabinet member.
The first “black” Supreme Court justice; the first “black” elected congressman; the first “black” governor; Booker T. Washington, the famous “black” writer; and W.E.B. Du Bois, another famous “black” writer:
Charles Drew, the famous “black” surgeon; Daniel Hale Williams, the first “black” cardiologist; the first “black” man to earn a B.A.; the first “black” man to earn a Ph.D.; and the first “black” general:
The first “black” woman to earn a US patent; the first “black” woman to earn a B.A.; the first “black” woman to earn a Ph.D.; the first “black” female college professor; and the first “black” female pilot:
