Henning Bunzel is Associate Professor of Economics at Aarhus University, Denmark. He has also taught at Aalborg University. He received his degree in Economics from Aarhus University. Bent Jesper Christensen is Professor of Economics at Aarhus University, Denmark. He has also taught at Cornell University, Harvard University, and New York University. He received his Ph.D. in Economics from Cornell University. Dale T. Mortensen is Board of Trustees Professor and Professor of Economics at Northwestern University, and Professor of Economics at Aarhus University, Denmark. He has also taught at California Institute of Technology, Cornell University, Hebrew University, New York University, and University of Essex. He received his Ph.D. in Economics from Carnegie-Mellon University. He is a research associate of the National Bureau of Economic Research (NBER), a research fellow of the Institute for the Study of Labor (IZA), and a fellow of the Econometric Society, the American Academy of Arts and Sciences, the Society of Labor Economics, and the European Economic Association. He was awarded the IZA Labour Economics Prize in 2005 and the Society of Labor Economists’ (SOLE) Mincer Prize in 2007. In 2008 he was elected an American Economic Association Distinguished Fellow, and in 2010 he was awarded the Nobel Prize in Economic Sciences.