- Location (country/state/etc. -- see here for instance)
- Social/Emotional Intelligence
- (roughly tied with 5) Conscientiousness
So far, the impact of 1 and the impact of 5 are very well known. To a significant extent, the HBD-o-sphere is a discussion of the relevance of #5.
Social Science news of the Year: Someone (GMU Ph.D.) found a good/reliable way to measure #6 across populations, rather than in individual interviews. The ability to measure 2 relevant variables, rather than 1 should be enormous.
FWIW, I don't think this will lend any support to the anti-HBD-ists. It should instead make the case much more robust, and somewhat less susceptible to bias-claims that this is just high-IQ people saying that IQ is important to feel better about themselves (this as a high IQ person).