EVERY so often someone asks me: “What’s your favorite country, other than your own?”

I’ve always had the same answer: Taiwan. “Taiwan? Why Taiwan?” people ask.

Very simple: Because Taiwan is a barren rock in a typhoon-laden sea with no natural resources to live off of — it even has to import sand and gravel from China for construction — yet it has the fourth-largest financial reserves in the world. Because rather than digging in the ground and mining whatever comes up, Taiwan has mined its 23 million people, their talent, energy and intelligence — men and women. I always tell my friends in Taiwan: “You’re the luckiest people in the world. How did you get so lucky? You have no oil, no iron ore, no forests, no diamonds, no gold, just a few small deposits of coal and natural gas — and because of that you developed the habits and culture of honing your people’s skills, which turns out to be the most valuable and only truly renewable resource in the world today. How did you get so lucky?”

That, at least, was my gut instinct. But now we have proof.

A team from the Organization for Economic Cooperation and Development, or O.E.C.D., has just come out with a fascinating little study mapping the correlation between performance on the Program for International Student Assessment, or PISA, exam — which every two years tests math, science and reading comprehension skills of 15-year-olds in 65 countries — and the total earnings on natural resources as a percentage of G.D.P. for each participating country. In short, how well do your high school kids do on math compared with how much oil you pump or how many diamonds you dig?

The results indicated that there was a “a significant negative relationship between the money countries extract from national resources and the knowledge and skills of their high school population,” said Andreas Schleicher, who oversees the PISA exams for the O.E.C.D. “This is a global pattern that holds across 65 countries that took part in the latest PISA assessment.” Oil and PISA don’t mix. (See the data map at: http://www.oecd.org/dataoecd/43/9/49881940.pdf.)