If only environmental factors were responsible for the different IQs of different populations, we should expect to find some countries where Africans had higher IQs than Europeans. The failure to find a single country where this is the case points to the presence of a strong genetic factor.” Richard Lynn.

“Regression would explain why Black children born to high IQ, wealthy Black parents have test scores 2 to 4 points lower than do White children born to low IQ, poor White parents.” Arthur Jensen.

The fact that black immigrants to the United States have shown achievements that are superior to native black Americans has been a phenomenon studied since at least the 1970′s. At first it was just the Caribbean blacks who were a subject of this unexpected outcome. As black Africans kept immigrating into the US, they showed even higher levels of achievement than the native blacks. Many scholars theorized on the reasons for these differences, from Thomas Sowell’s proposal that this disproved the validity of discrimination against native blacks as an explanation for their underachievement (Sowell, 1978), to other scholars who suggested that these immigrants were just the most highly driven members of their home countries as evidenced by their willingness to migrate to a foreign country (Butcher, 1990).

What most of these theories failed to predict was that the children of these immigrants would also show exceptional achievements, especially academically. It is only in recent years, as the immigrants have stayed long enough to produce a sufficiently high number of offspring, that it has been observed that they are over-represented among high academic achievers, especially when compared to native blacks, particularly at very elite institutions. What has been missed in the IQ debate is the full logical implication of these achievements: they have effectively nullified any arguments for a racial evolutionary explanation of the well-known IQ test score gap between blacks and whites. Even more fatal for the racial hereditarian side of the debate has been the corroborating data of school children performance in the UK, particularly when the black Africans are divided into their respective nationalities and tribal ethnicities, as reported in the latter section of this article.

Arthur Jensen gave at least two empirical tests that could potentially falsify his thesis of a race based genetic explanation for the black-white IQ gap. Firstly, if the gap is caused by genetic racial differences, the blacks with more white admixture should tend to show a higher IQ than blacks with less whiteness. Secondly, “regression to the mean” implies that children (or siblings) of extraordinarily high IQ blacks should tend to a lower IQ than the children or siblings of similarly high IQ whites. Social experiments concerning the first test have not been decisive, especially due to the difficulty of separating out environmental factors since lighter American blacks have historically faced more favorable socioeconomic conditions. The second test did indicate some evidence of regression to a lower black mean for African Americans, which only means that the racial genetic hypothesis was not nullified; it remained a valid proposition. Until now.

Using Jensen’s own empirical framework, the racial genetic hypothesis can be tested by comparing black African immigrants with native blacks, intellectually. If the genetic hypothesis is correct, children of elite African blacks will tend to have lower IQs than children of native black Americans, and perhaps even lower than children of low IQ blacks, the same phenomenon observed between American blacks and whites since native blacks are basically “more white” than African (or Caribbean) immigrants.

In the US, it is not only at elite universities where there is a clear over-representation of black immigrant children, it is also at public gifted schools and any kinds of intellectually gifted programs that are highly selective

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I guess that's y y'all are known 4 peddling dope crack worldwide.

Hmmn. I guess it's obvious. Even Nigerians know that Igbos are really smart and Yorubas seem them as a competition.