Religious people are less intelligent than non-believers, according to a new review of 63 scientific studies stretching back over decades. A team led by Miron Zuckerman of the University of Rochester found “a reliable negative relation between intelligence and religiosity” in 53 out of 63 studies. … Previous studies have tended to assume that intelligent people simply “know better”, the researchers write—but the reasons may be more complex. For instance, intelligent people are more likely to be married, and more likely to be successful in life—and this may mean they “need” religion less. …