Measuring quality of life under spatial frictions / Gabriel M. Ahlfeldt (Humboldt University Berlin, Berlin School of Economics, LSE, CEPR and CESifo), Fabian Bald (European University Viadrina, Berlin Schoolof Economics and CRED), Duncan H. W. Roth (Institute for Employment Research (IAB) and IZA), Tobias Seidel (University of Duisburg-Essen, CESifo and CRED) ; IZA Institute of Labor Economics