Yes, among the books on the race-IQ controversy that I've seen, I agree that these are the closest thing to an unbiased source. However, I disagree that nothing very significant has happened in the field since their publication -- although unfortunately, taken together, these new developments have led to an even greater overall confusion. I have in mind particularly the discovery of the Flynn effect and the Minnesota adoption study, which have made it even more difficult to argue coherently either for a hereditarian or an environmentalist theory the way it was done in the seventies.

Also, even these books fail to present a satisfactory treatment of some basic questions where a competent statistician should be able to clarify things fully, but horrible confusion has nevertheless persisted for decades. Here I refer primarily to the use of the regression to the mean as a basis for hereditarian arguments. From what I've seen, Jensen is still using such arguments as a major source of support for his positions, constantly replying to the existing superficial critiques with superficial counter-arguments, and I've never seen anyone giving this issue the full attention it deserves.