An evolutionary psychologist at the the London School of Economics and Political Science crunched a whole lot of data from a large U.S. sample and found that people who identified as liberal and atheist had higher IQs. Also, high-IQ men were also more likely to be sexually exclusive than lower IQ men, but the same correlation was not found in women.

“The IQ differences, while statistically significant, are not stunning — on the order of 6 to 11 points,” the article says. It would be interesting to me if the same correlations are to be found in other populations, as the U.S. seems to have an abnormally high proportion of, um, cognitively challenged religious conservatives.