I'm very pleased to find that someone has finally done a systematic review of the studies that purport to show that religious people are more generous than non-religious individuals. I have commented* on how pathetic the methodologies and incredibly biased the interpretation of such studies have been not to mention how bogus the notion is to start with. If anyone is interested in a more rigorous and scientifically based review of the major studies in this area I highly recommend Roy Sablosky's "Does religion foster generosity." It was published in The Social Science Journal. It can be accessed online for free at researchgate.net (http://www.researchgate.net/publication/261918362_Does_religion_foster_generosity). I would advise downloading it sooner rather than later. I don't believe it will be free indefinitely.
Generosity: A Perennial and Misleading Question (8/25/12)