"Dough, wonga, greenbacks, cash. Just words, you might say, but they carry an eerie psychological force. Chew them over for a few moments, and you will become a different person. Simply thinking about words associated with money seems to makes us more self-reliant and less inclined to help others. And it gets weirder: just handling cash can take the sting out of social rejection and even diminish physical pain."
-- Mark Buchanan, telling me nothing I didn't already know - about something I don't already have - which must be the job of a New Scientist.