Tyler Cowen has an interesting comment on this [0]. Generally, it's good policy to interpret these studies cautiously. [0] http://marginalrevolution.com/margin

Tyler Cowen has an interesting comment on this [0]. Generally, it's good policy to interpret these studies cautiously. [0] http://marginalrevolution.com/marginalrevolution/2012/02/how-good-are-the-upper-classes.html http://marginalrevolution.com/marginalrevolution/2012/02/how...