World IQ

http://www.unz.com/jthompson/world-iq-82/

Yes, it mixes environmental and genetic effects, but it gives you a rule of thumb as to what countries, on average, are capable of doing. It can be expected that rising standards of living will boost results, though the rate of intellectual improvement has been slow in many newly rich countries despite more education funding. Convergence with European levels might be within 80 to 300 years. Each country will have cognitive elites, though by absolute international standards they will be fewer in countries with lower ability.