Laibson, David; Madrian, Brigitte C.; Choi, James J. - National Bureau of Economic Research (NBER) - 2006
Experimental subjects allocate $10,000 across four S&P 500 index funds. Subject rewards depend on the chosen portfolio's subsequent return. Because the investments are not actually intermediated by the fund companies, portfolio returns are unbundled from non-portfolio services. The optimal...