It should go without saying that this is all very speculative, but if it went without saying then it wouldn’t be very autistic, eh?
I should note ahead of time that speed is probably something we get from neanderthals, whereas caliber is probably something we get from melonheads and maybe post-hybridization cro magnon. I believe this because mental speed characterizes high-ability Asians, whereas caliber better characterizes high-ability whites. IQ is polymorphic, like height, therefore I expect the races with the most neanderthal admixture will also have the most neanderthal-like intelligence. Mental speed is also (currently) the primary discriminant in the middle ranges of IQ, separating midwits from dullards, where modern IQ tests have the highest resolution. However, in the upper ranges of intelligence caliber is the primary discriminant.
A big, BIG caveat: Most of the traits associated with mental speed don’t account for the extremely conservative neanderthal personality, which we’d expect from hominids that didn’t significantly modify their lifestyle for hundreds of thousands of years. So most of the liberal epiphenomena of mental speed would have been counterbalanced by the personality traits that accompany deep-set eye sockets (longer, larger emotional cycles) and pongid somatotype.
Mental speed vs. Mental caliber
High performance on Raven’s Progressive Matrices IQ subtest vs. High performance on analogies IQ subtest
Derives particulars from generalities vs. Generalizes from particulars
Deduces vs. Induces
Many ideas vs. Big ideas
Prestige-seeking vs. Control-seeking
Novelty-seeking vs. Stability-seeking
Social competition vs. Emotional solipsism
Enjoys academic work vs. Disdains academic work
Thinks playfully vs. Thinks seriously
Liberality vs. Cynicism
Equalism vs. Classicism
Progressivism vs. Conservatism
Tendency to Gnosticism: “mind over matter” vs. Tendency to Naturalism: “matter over mind”
Sees connections vs. Sees patterns
Acquires knowledge vs. Acquires understanding
Prefers stimulants vs. Prefers depressants
Suffers from racing thoughts vs. Suffers from troubling thoughts
I may add to this over time because I haven’t found all my notes.