"African Americans currently score lower than European Americans on vocabulary, reading, and mathematics tests, as well as on tests that claim to measure scholastic aptitude and intelligence. This gap appears before children enter kindergarten (figure 1-1), and it persists into adulthood. It has narrowed since 1970, but the typical American black still scores below 75 percent of American whites on most standardized tests. On some tests the typical American black scores below more than 85 percent of whites"- http://www.nytimes.com/books/first/j/jencks-gap.html

"Intellectual and personality measures were available from unwed mothers who gave their children up for adoption at birth. The same or similar measures have been obtained from 300 sets of adoptive parents and all of their adopted and natural children in the Texas Adoption Project. The sample characteristics are discussed in detail, and the basic findings for IQ are presented. Initial analyses of the data on IQ suggest moderate heritabilities." - http://www.ncbi.nlm.nih.gov/pubmed/496798

"Adolescents' IQ test scores were similar to those of their parents and siblings only if they were biologically related. Our interpretation of these results is that younger children are more influenced by differences among their family environments than older adolescents, who are freer to seek their own niches." - http://www.ncbi.nlm.nih.gov/pubmed/6872626

Notice how carefully worded the "interpretation" of that last one was. Rather than suggest that genetics has to do with older adolescence not having IQ scores that match their adoptive parents their "interpretation" is that the adolescences simply chose not to perform as well as their adoptive parents...Anything to avoid controversy.

White guilt is getting in the way of a lot of racial/genetic/intelligence/violence studies. People don't want to go back to a time when one group of humans were seen as superior and another inferior. The funny part is, Intelligence wise, whites are NOT superior. Jews are.. Their intelligence levels are higher, achievement levels higher, hackers should know this. Many of Silicon Valleys most prominent companies were started by jews. Facebook, Craigslist, Google. Also a report by Joel Stein from the New York Times showed that every major Hollywood studio was founded by jews. In the fashion world: Ralph Lauren, Levi (Jeans), Guess, Mark Ecco, Men's Warehouse, and most of the brands you see in stores today were also started by jews.

"In 1921 Budapest, 88% of the members of the stock exchange and 91% of the currency brokers were Jews, many of them ennobled. In interwar Hungary, more than half and perhaps as much as 90 percent of Hungarian industry was owned or operated by a few closely related Jewish banking families. Jews represented one-fourth of all university students and 43% percent at Budapest Technological University. In 1920, 60 percent of Hungarian doctors, 51 percent of lawyers, 39 percent of all privately employed engineers and chemists, 34 percent of editors and journalists, and 29 percent of musicians identified themselves as Jews by religion. Resentment of this Jewish trend of success was widespread." - Yuri Slezkine. The Jewish Century. Princeton, 2004. ISBN 0-691-11995-3

Since 1921 theres been a lot of catching up by Whites, Blacks, Asians, etc... but Jews are still disproportionately successful and score high.