I've always had a healthy distrust of IQ tests. My personal opinion is that everything I've seen about them would appear to indicate that they test nothing more than how good you are at IQ tests. There may be a relation between actual intelligence and ability to do IQ tests, but to base subsequent analysis purely off of IQ seems unjustified to me.
I've not seen anything either regarding a genuinely race- or socially- neutral IQ test. Many seem to attempt to tend along those lines, however I feel the innate flaws of using IQ tests (or an equivalent) alone, without ever being able to actually confirm what form the relation between test and actual intelligence takes, seems to contain a flaw from the start.
Those are just my personal opinions on it, I don't have much in terms of references to papers to back any of it up, but I think that it's fairly reasonable as an argument.