Let us leave IQ aside and talk just about education. The observation that educated urbanites have the lowest number of kids holds in the Islamic world, too. Bi

Let us leave IQ aside and talk just about education. The observation that educated urbanites have the lowest number of kids holds in the Islamic world, too. Big, developed cities like Istanbul and Tehran have TFR well below reproduction rate and very similar to European values. Backwaters like rural Afghanistan or Niger, where literacy is still uncommon, have tons of kids. Basic education for women is very well correlated with lower TFR everywhere in the world.