Kyle Margaret, Williams Heidi
MINES ParisTech (CERNA) and PSL Research University, V329, 60 boulevard Saint Michel, 75272 Paris Cedex 06 France.
Department of Economics, MIT, 50 Memorial Drive, E52-440, Cambridge MA 02142.
Am Econ Rev. 2017 May;107(5):486-490. doi: 10.1257/aer.p20171086.