Are the rich more selfish than the rest of us?
Wealthy People (Shutterstock)

By Jan Stoop, Associate Professor of Applied Economics, Erasmus University Rotterdam, James Andreoni, Professor of Economics, University of California, San Diego, and Nikos Nikiforakis, Professor of Economics, New York University Abu Dhabi. Businessmen pass by Occupy Wall Street protesters at Zuccotti Park in New York, Oct. 11, 2011. AP Photo/Kathy Willens Social scientists have long known…