If a Muslim is more religious, is he more in favor of terrorism? I was interested in this question, so I analyzed recent data from the World Values Survey. In two countries--Pakistan and Algeria--thousands of people were asked if they approved of 9/11, as well as being asked how often they attend religious services.
Results differed for the two countries. First, 22.4% of Algerians approved (or strongly approved) of the attacks, whereas only 3.5% of Pakistanis did. In Algeria, more religious people were slightly more supportive: 26% of those going to services more than once a week favoring the terrorism: 21% of those who never go were supportive. By contrast, only 0.4% of frequent attenders in Pakistan were pro-terrorist, while 14.4% of those who rarely attend were.