A study from the Barna Research Group, based on interviews with 3,854 adults in the lower 48 states, with a margin of error of 1 or 2%, finds the following:
Variation in divorce rates by religion:
Religion % have been divorced
Born-again Christians 27%
Other Christians 24%
Atheists, Agnostics 21%
As an atheist who has been married to the same fellow-unbeliever for 29 years, I shouldn't be surprized at this, but I am. Like everyone else, I tend to believe what I am told, rather than what I see with my own eyes. I'll have to work on that...
By the way, notice what some church leaders are saying about this study: flat declarations that they will not believe it. In other words, for some people, the idea that religion has a positive effect on moral behavior ... is itself a religious tenet, insulated from scientific evidence.