2 IZA Discussion Papers
IZA Discussion Paper No. 15583
IZA Discussion Paper No. 2011
substantially revised and split up versions published as: (1) 'Social Preferences, Beliefs, and the Dynamics of Free Riding in Public Goods' in: American Economic Review, 2010, 100 (1), 541-556; and (2) 'The Behavioral Validity of the Strategy Method in Public Goods Experiments', Journal of Economic Psychology, 2012, 33 (4), 897-913