ScienceDaily (May 17, 2012) — Across history and cultures, religion increases trust within groups but also may increase conflict with other groups, according to an article in a special issue ofScience.
“Moralizing gods, emerging over the last few millennia, have enabled large-scale cooperation and sociopolitical conquest even without war,” says University of Michigan anthropologist Scott Atran, lead author of the article with Jeremy Ginges of the New School for Social Research.
“Sacred values sustain intractable conflicts like those between the Israelis and the Palestinians that defy rational, business-like negotiation. But they also provide surprising opportunities for resolution.”
As evidence for their claim that religion increases trust within groups but may increase conflict with other groups, Atran and Ginges cite a number of studies among different populations. These include cross-cultural surveys and experiments in dozens of societies showing that people who participate most in collective religious rituals are more likely to cooperate with others, and that groups most intensely involved in conflict have the costliest and most physically demanding rituals to galvanize group solidarity in common defense and blind group members to exit strategies. Secular social contracts are more prone to defection, they argue. Their research also indicates that participation in collective religious ritual increases parochial altruism and, in relevant contexts, support for suicide attacks.