Money vs. Self
Money and Me, Me, Me -- Miller 2006 (1116): 3 -- ScienceNOW
The Psychological Consequences of Money -- Vohs et al. 314 (5802): 1154 -- Science
Interesting work from psychology, complements Viviana Zelizer work in sociology in interesting ways, as well asll those game theory studies showing that economists as a profession are prone to make more selfish decisions than non-economists.