On the individual level, higher intelligence has a protective effect against fatal car accidents, but does the same hold true when comparing populations?
It appears yes: national IQ correlates at r = -0.7 with country-level road-traffic death rates.
MENA nations only:
European nations only:
Oceanic nations only (non-significant):
Asian nations only, excluding Middle Eastern ones:
Sub-Saharan African nations only:
American nations only (non-significant, but barely):
Global but less cluttered:
Takeaways:
- Highly significant association overall.
- Significant within 4/6 regions.
- Directionally consistent, including when technically statistically non-significant.
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