I think the sources for "some populations on average are smarter than others" are needed. Same with the "superior social ability". I've seen nothing that suggests that either are true and that they can be attributed to a genetic difference and not to social or environment confounders. The consensus is that it's not worth studying. The genomic data shows that any influence or different in complex behaviors would be just noise and impossible to measure in the face of strong confounders. The point is that these perceived "differences" between races (a term that many argue has no scientific basis) are in fact incredibly small genetic despite their outward appearance.
----- Yeah, I totally feel like digging up sources. It looks totally like you would not dismiss the sources out of hand.