experimental data set. Meta data for fields is included in the excel file For experimental details, please see: Miguel A. Fonseca and Shaun B. Grimshaw (2017) Do Behavioral Nudges in Prepopulated Tax Forms Affect Compliance? Experimental Evidence with Real Taxpayers. Journal of Public Policy & Marketing: Fall 2017, Vol. 36, No. 2, pp. 213-226. https://doi.org/10.1509/jppm.15.128