Hmm, this is all very interesting.
I just measured my head's circumference and it is dead on average at 23". What a disappointment! Perhaps had I not been born very prematurely, my skull might have been bigger (looking for excuses here). Does anyone know of any studies regarding premature births and head size - brain size? I'm Caucasian which suggests my brain size is somewhere between that of Asians and Negroids....in other words, another indicator of my being intellectually average.
It was common to give young students IQ tests when I was growing up. What I remember about this is that my parents were told I had a rather high IQ, but that I didn't apply myself in school which resulted in average to low average grades.
So, I can guess by now you are thinking, what does any of this mean to you and why should you care? Well, I'm completely on board with you on this. You shouldn't care because it means nothing in the grand scheme of things. The same is true for studies that show these minor differences in brain size and IQ between the races. It should not make anyone feel superior or inferior to someone else because they are of a different race and skull size than you or me.