Interesting research that proves that those with conservative values out-give in all ways those with liberal values. I saw a teaser on Fox News that made the claim and did a little internet digging and came up with a good overview article at http://www.beliefnet.com/story/204/story_20419_1.html
I think I see another interesting hypothesis from it. Seriously, no "tongue in cheek" intended. Conservatives are good at giving away their own money and choosing who they think is worthy of it. Liberals are far better and more comfortable in giving away other people's money and not having to make a value judgement on who is worthy; they'd rather let "the government" make the decision for them.