[joel2006]

if there was any need to prove that there clearly are environmental influences on IQ, the wiki are contains proof, it says:
"Neither Head Start nor most other (more intensive) programs have been able to produce lasting gains in IQ or school achievement.[7] Gains are lost after the programs end. Supporters note that they continue as long as the programs continue." The fact that gains were made and lost indicate that at least part of the gap IS due to environmental influences. Note that this article uses data from US blacks only, who have been for the last 400 years subjected to horrific oppression (300 years of chattel slavery and another 90 of legal discrimination). Why anyone would chose to ignore that is a very interesting question. There is no evidence that these differences are solely due to innate racial differences. Genes and the environment interact and always must. If one took 2 types of plants, where one was genetically due to be taller than the other and then limited it nutrionally for 400 years, then compared its offspring to the other, its offspring would be shorter, but that says nothing about its genetic potential.