from m. saadat:
“It has been reported that offspring of consanguineous marriages have lower IQ scores than offspring of non-consanguineous marriages. The present result is consistent with that report. However, this study is the first to test the hypothesis that IQ and α are negatively correlated at the population level…. Across countries, there was a significant negative correlation between IQs and logα (r = −0.765, df = 33, p<0.001).”
here’s a table from that article. that second figure is the inbreeding coefficient (“the probability that an individual has received both alleles of a pair from an identical ancestor”) for each population:
and here’s a little chart i made (using saadat’s numbers) illustrating the negative correlation between inbreeding and national iqs:
so … there you go.
previously: kissin’ cousins
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