Wow, we are analysts? 
With women the same pattern holds; women prefer carbs to meat --> slightly smaller cranial capacity even when adjusted for body size --> slightly lower IQ (avg is only a couple points lower). That really makes sense, if the men are doing the hunting they expend more energy, are the first to get to the meat, bring some back to the tribe, but the women have been busy munching on their gathererings.
I understand the differences in cranial capacity, but how do you necessarily know that cranial capacity is directly linked to intelligence? That is what I am looking for.
Posted that earlier. Thru the magic of modern science it is calculated as .4 correlation.
If you look at a map of the world today by cranical capacity it roughly fits a map of IQ.
Also if you chart out the history of the homo genus cranial capacity increases steadily over time, as does body mass. But the ratio of cranial capacity to body mass keeps increasing. Along with this comes more advanced tools and communication, use of fire, etc. More advanced tools drives more efficient hunting, more meat drives bigger brains, etc.
^ Interesting stuff, thanks.
I knew people who were great at tests like the SAT or GMAT, and got stellar scores, and yet were lazy in HS and got crap grades. without question, the hacksaw status didn’t get them where they wanted to be
Looking at individuals – of course there will be high IQers with no interest in accomplishment, and low IQers with interest in accomplishment, and all other combinations.
Looking at populations – intelligence IS correlated with just about everything good. Lifespan, adacemic performance, work performance, income, not being obese, not being a criminal (except perhaps in the finance industry)…
http://en.wikipedia.org/wiki/Intelligence_quotient#Social_outcomes
^ What is the correlation between intelligence and the ability to detect sarcasm?
^ -0.7
Highly intelligent people are too uptight.
Sarcasm is cultural, and so that question doesn’t really make sense.