It's almost certainly IQ. IQ also correlates to all those other positive traits. East Asians have higher average IQs than most other people, particularly spacial reasoning and math which explains their over-representation in engineering. Conversely Ashkenazi Jews have higher than average verbal IQs which explains why they appear over represented in media. But that doesn't get us very far because it just gets us back to East Asians outperforming us on IQ tests created by mostly white people and is supposedly culturally biased to have white people outperform. There's something definitely going on here. Maybe it's genetics, maybe it's diet, maybe it's culture. Possibly a combination. It's not really helpful to try to have a discussion on IQ, so I just focus on the positive traits that are derived from IQ. It tends to trigger people less and raw IQ isn't actually important to me compared to things like criminality and economic output.
