The overall correlation is quite strong, with a few notable exceptions. For example, China had a low average GDP, but that was because they are a communist nation which had only recently loosened restrictions on a market economy. (That number has probably risen significantly since 2003.) Qatar had outperformed its national average IQ simply because of its tremendous oil resources. However, by and large, the correlation held.
Lynn and Vanhanen admitted that their IQ data was not as comprehensive and rigorously derived as they would have liked, and that some of the numbers are partly estimates.
But to me, the most fascinating part of the list below is simply the average IQ's:
|Data of Lynn and Vanhanen|
It's surprising how low India averages in IQ: 81. They are the country which built the Taj Mahal (from 1632 to 1653, as impressive as anything built in Europe during that era). They come up with great mathematicians from time to time. And students of Indian descent in this country have dominated the Westinghouse Science Fair competition in recent years. Is it that the smart ones come over here? That the testing is somehow skewed in India? Or that the general poverty over there means that the environmental component has a strong effect on their results? In any case, it's surprising.
Nepal is also surprising, checking in at only 78. Kathmandu has fairly sophisticated architecture. And several places in Nepal have claimed to the inspiration for Shangri-la. Perhaps the reason everyone was so happy in Shangri-la was because they were too stupid not to be.
South Koreans actually outscore the Japanese. So why are the Japanese so prejudiced against them? You'd think they'd be happy to intermix, instead of hiring detectives before a marriage to make sure that a prospective spouse has no trace of Korean ancestry. Particularly since, at least from what I've seen firsthand, Koreans are a physically hardier people.
No figures are available for North Korea, but it seems a fairly safe assumption that their average IQ doesn't diverge all that much from their brethren to the south. Given that they're basically starving, that doesn't say a lot for communism.
How can Israel only have an average IQ of 94? Jews in this country are known to have an average IQ significantly higher than other whites (somewhere between 105 and 110). Is there a lower Ashkenazi to Sephardic ratio there? Or is it the resident Palestinians who bring the average down?
The thing that really left me wondering was, how does a country even function with an average IQ of 59 (Equatorial Guinea) or 63 (Ethiopia)? In the US, the number below which you are considered retarded is 70. But to have an entire country with an average well below that line? How do the trains run? How do cars get repaired? How do crops get grown?