references please. double blind tests. Whats this guys credentials?.. is it accepted my the medical community?
2 things.. genetical- never heard of it, and another- if they do, then it follows that the majority of the white population in the US is dumber than the rest of the world's who have an average of 100. This has to occur as the number of "black people" would bring the norm down, so someone scoring 100 in the US would probably only get 95 or less elsewhere.
I'm having a real problem accepting genetic intelligence differences considering we all stemmed from the very same blueprint and culture and environment evolved the physical differences. Not saying that the stats are false- but suggesting that theres no difference in potential- which is what IQ tests are supposed to capture.
Debussey will dig up some references for you. (Ask MattCock, he's got them on his computer).
You say: "I'm having a real problem accepting genetic intelligence differences considering we all stemmed from the very same blueprint and culture and environment evolved the physical differences." -> Think about this: There ARE genetic differences between blacks and whites. Here are some: "On average, compared with whites, blacks mature more quickly in the womb, are born earlier, and develop teeth, strength, and dexterity earlier. They sit, crawl, walk, and dress themselves earlier. They reach sexual maturity faster, and they have better eyesight. On each of these measures, East Asians lag whites and blacks. In exchange, East Asians get longer lives and bigger brains."
-> Why is it so hard to believe that there are genetical differences between blacks and whites in regards to intelligence, when there are other genetical differences between blacks and whites going far beyond just skin color

Some references:
http://www.news-medical.net/?id=9530http://psychology.uwo.ca/faculty/rushtonpdfs/PPPL1.pdfhttp://www.gifted.uconn.edu/siegle/research/Correlation/Intelligence.pdf