Why Are Economists So Frugal?

"Some economists may be cheap, at least by the standards of other people, because of their training or a fascination with money and choices that drives them to the field. In recent research, University of Washington economists Yoram Bauman and Elaina Rose found that economics majors were less likely to donate money to charity than students who majored in other fields. After majors in other fields took an introductory economics course, their propensity to give also fell."

Secrets of the Economist's Trade: First, Purchase a Piggy Bank
by Justin Lahart
http://online.wsj.com/article/SB126238854939012923.html