Affiliation: | a School of Economic Sciences and IMPACT Center, P.O. Box 646210, Washington State University, Pullman, WA 99164, United States;b Department of Agricultural Economics, 403 West State Street, Krannert Bldg., Purdue University, West Lafayette, IN 47906, United States;c Institute for the Study of Labor (IZA), Schaumburg-Lippe-Str. 5-9, D-53113, Bonn, Germany |