. Ashraf, Karlan and Yin (2004), Thaler and Benartzi (2004), Camerer (2000), Choi, Laibson and Madrian (2004), DellaVigna and Malmendier (2004), Fehr and Goette. (2004), Field (2004), Frey and Meier (2005), Haigh and List (2005) List (2003, 2004), Madrian and Shea (2001), Miravete (2003), and Zinman (2005). 3 A “natural...