when they also grow inches taller on average you realize there was a physical deficiency before. Which no doubt can affect the brain.
It's also worth keeping in mind that whatever dire straits Africa is in, IQ-wise, that is with Western food aid. Prior to that, on average of course always, they probably had even lower IQ.
yeah better nutritions helped everyone to reach true potentials, but there's obviously a limit to the increase and proportionally blacks are still at least one standard deviation lower than everyone else, even with the so called Flynn effect
when they also grow inches taller on average you realize there was a physical deficiency before. Which no doubt can affect the brain.
It's also worth keeping in mind that whatever dire straits Africa is in, IQ-wise, that is with Western food aid. Prior to that, on average of course always, they probably had even lower IQ.
yeah better nutritions helped everyone to reach true potentials, but there's obviously a limit to the increase and proportionally blacks are still at least one standard deviation lower than everyone else, even with the so called Flynn effect