Anyone hear about a science fair project that was supposed to test Chrisian v. non-Christian morality? Loaded questions on the survey like 'Do you go to church every Sunday?', still came out Christians no better than non-Christians, but the conclusion didn't reflect that (something like we are all sinners, etc., and need to be Christians). It was a terrible experiment with too many assumptions and a tiny sample size, but it could be done right....
Sorry I don't have a source, maybe apocryphal?