Friday, July 27, 2012

The cross-national correlation between IQ and divorce

For 72 countries, I calculate a correlation of .44 between the mean IQ of a country and the rate of divorce. The greater wealth of intelligent countries reduces the economic necessity of marriage, but the correlation between per capita GDP and divorce is only .28.

I suspect that less intelligent countries are more likely to see marriage as a change in life status, not a contract. The acid of modern rationality reduces institutions like marriage to voluntary agreements that can be dissolved if unsatisfying. The focus on family used to be intergenerational; now it's business between adults.

Black-white differences in glaucoma

Glaucoma is a progressive condition caused by a combination of genetic and environmental factors and is the leading cause of irreversible bl...