The increasing evidence in favor of this correspondence, along with the theoretical traits we’d expect from people whose psychology is dominated by the sub-brain containing the primary somatosensory cortex, tends to validate my theory that melons have reflexes comparable to negroids.
The resulting correlation between IQ and reflex speed is therefore comparable to IQ and socioeconomic adjustment. Both are positive, and yet we regularly observe that thals have bad reflexes in general. We could chalk this up to nutrition, but I think we’re looking at the same bimodal split in the high IQ range.
You have on the one hand the extreme melonhead manifestations: high IQs, good reflexes, and good adjustment. On the other hand, you have extreme neanderthal manifestations: high IQs, bad reflexes, and dysfunctional (though occasionally earning a high wage through technological aptitude). On the balance, both correlations come out slightly positive, whereas I suspect that separating these two modes would yield a high correlation on the melon side and a slightly negative correlation on the thal side.
And, as usual, the smartish cros (90-99%) are mucking up everything, even when they aren’t engaging in (simple deduction, boilerplate verbal copycatting, categorical reasoning) social posturing and identity politics.