Score one for religion?
Findings - For Good Self-Control, Try Getting Religious About It - NYTimes.com
“Brain-scan studies have shown that when people pray or meditate, there’s a lot of activity in two parts of brain that are important for self-regulation and control of attention and emotion,” he said. “The rituals that religions have been encouraging for thousands of years seem to be a kind of anaerobic workout for self-control.”
Although a number of different studies are cited, including one on people who are 'spiritual' but not 'religious', there is no study on 'spiritual' plus meditation versus religion.