Political liberalism, atheism and sexual exclusivity among males may be reflections of intelligence, according to a study of Americans by an evolutionary pyschologist at the London School of Economics and Political Science.
CNN reports that the study by Satoshi Kanazawa correlated data on these behaviors with IQ from a large national U.S. sample and found that, on average, people who identified as liberal and atheist had higher IQs. This applied also to sexual exclusivity in men, but not in women. The findings are to be published in the March 2010 issue of Social Psychology Quarterly.
From the CNN report: