But if you ' re claiming that race is responsible for racial intelligence differences based on IQ tests , you have to show two thingsFirst , that IQ testing is an objective measure of intelligence . You haven ' t even begun to show that , the prevailing attitude among all sources I ' ve read , including the ones you ' ve posted , is that it accurately predicts aptitude at a variety of tasks valued by the culture of the creator . Even in your most recent link , nowhere does it say anything along the lines of IQ tests are an accurate measure of general intelligence , it talks solely about workplace performance . It should be totally clear that can agree with this statement and still not think that IQ tests measure intelligence objectively . There is and probably will always be cultural bias in these things at least until we fully understand the human brain , and this is a generally accepted fact for at least the entire psychiatric community . Secondly , you have to show that the racial differences in IQ test scores actually arise from race and not from other factors . It seems that we both agree there are factors other than genetics that apply to IQ test scores , such as wealth and education , and it should be obvious that these apply in this case as strictly statistically speaking blacks and Hispanics are on average less wealthy and have worse education than both whites and Asians . I cannot dismiss the possibility that there is in fact a genetic racial divide in intelligence , but that ' s not what the data we have right now can tell us . In order to conclusively prove that the difference is racial and not environmental as in , a result of poverty , malnutrition , poor education , etc . , you would need either a study that only uses people with very similar environments , or you would need to have enough genetic data which simply doesn ' t exist for now to determine which genes factor into intelligence and which races have which . Yes , that is asking a lot , but that is what you would need . Since neither that study or that data pool exist right now , you cannot reasonably conclude that race is a determining factor in intelligence , regardless of the objectivity of IQ tests .