
Jason Voorhees
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Here we apply this technique to examine SIRE differences in g. We find that
African and Amerindian ancestry are strongly negatively associated with general
cognitive ability among African, Hispanic, and other American subsamples. This
replicates previous research which showed that genetic ancestry predicts
cognitive ability, independent of socioeconomic status and phenotypic
discrimination variables which are the usual suspects (Kirkegaard et al., 2019;
Lasker et al., 2019; Warne, 2020). The importance of such analyses within SIRE
groups is that they shed light on the cause of g differences between SIRE groups
with respect to similarities in developmental processes (Rowe, Vazsonyi &
Flannery, 1994)
The ancestry effects are consistent in direction across subsamples and hold
after controlling for a wide array of economic and social factors, including migrant
status, SIRE, ethnic attachment, measures of discrimination, phenotypic indices
of race, and general SES. These results suggest that African, Hispanic, and other
groups have inherited alleles from their African and Amerindian ancestors which
make them liable to lower levels of g. In fact, as seen in Table 5 (Model 2), 100%,
76%, 81%, and 100% of the respective Black, Native American, Other, and
Hispanic SIRE effects were explained by genetic ancestry. This association
between genetic ancestry and g suggests a partial genetic basis for observed
SIRE differences.
We conducted an admixture study to assess the association between cognitive ability and European ancestry in the African- and European-American populations. Earlier researchers (e.g., [51,52]) were unable to detect significant relationships between ancestry and cognitive ability. We, however, found a strong, significant association between European genetic ancestry and cognitive ability, confirming the recent results of both Kirkegaard et al. [24] and Warne [25].
Rushton and Jensen [9] called for modern genetic studies to test the hereditarian model. They predicted that "for those Black individuals who possess more White genes, their physical, behavioral, and other characteristics will approach those of Whites" ([9], p. 262). In the present study, we confirmed that this was the case for general cognitive ability. Moreover, we showed that the association between European ancestry and g was substantially mediated by eduPGS rather than skin color PGS. These results provide support for a hereditarian model.
The findings of both the studies were
-Consistent with predictions from the genetic nypothesis, African and Amerindian ancestry were both found to be negatively associated with [IQ/ general intelligence]. The association was robust to controls for multiple cultural,
-Socioeconomic, and phenotypic factors. Higher-levels of European ancestry in African- Americans correlates to higher-IQ
-Common alleles in various human populations can predict intelligence & various SNPs
TLDR- Genetics are responsible for IQ and human intelligence along with environment. Niggers from Africa= Lowest IQ independent of socio-economic factors . African Americans IQ mog africans by large margin and with higher european ancestry their IQ scores on average increases but still the top 5% of blacks score mediocre in intelligence. Ashkenazi and Asian =Highest IQs. White Europeans= In the middle



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