Porn predicts potential fathers.

• Position: Men - Brief article

Young men with positive attitudes toward babies and parenting have relatively low physiological reactivity to sexually explicit material, according to research published in Psychological Science. The study, by a team of researchers at the University of Chicago (Ill.) and Wayne State University, Detroit, Mich., shows that men with positive attitudes toward babies have a lower increase in testosterone in response to explicit material compared with men who have less positive attitudes toward infants. The research sheds light on the physiological basis for choices that young men make about whether to focus more on child rearing or pursuing sexual partners.

"Our findings show there is a strong mind-body connection. Liking or not liking babies is related to how a man's body--specifically, his testosterone --responds to sexual stimuli," says lead researcher Dario Maestripieri, professor of comparative human development. "These results suggest that, even before young...