I am having an argument with a revolting racist on another forum, and I am seeking to support my statement that Eysenck's 1971 studies concluding that about 80% of a 15-point average difference between the measured IQs of black Americans and white Americans (in favour of the whites) was genetic were fatally flawed (I am aware of the fraudulent nature of Burt's statistics) and in particular I wish to support my view that they are now generally regarded as discredited.

Regrettably most of what I am finding is research funded by the Helms foundation and the Pioneer fund - not to mention Rushton, and some recent work by a Russian - all firmly in the racist camp.

Can anyone point me at a reliable summary of modern views in this area that rebut Eysenck (and Rushton) on this?