More than 50 years ago, Alfred Kinsey studied the relationship of sex and education. He found an inverse relationship between school and climax: the more you went, the less you came. The majority of female college graduates never experienced orgasm; women with only a high-school diploma fared much better, with only 20 percent being, in Kinsey's word, "frigid." Conservative Christianity correlates with lower education levels, suggesting one explanation for the University of Chicago findings.