Ariel J Binder1, John Bound1. 1. Ariel Binder is a PhD candidate in Economics and Pre-Doctoral Trainee at the Population Studies Center, University of Michigan, Ann Arbor, Michigan. John Bound is the George E. Johnson Collegiate Professor of Economics, a Research Professor at the Population Studies Center, University of Michigan, Ann Arbor, Michigan, and a Research Associate of the National Bureau of Economic Research, Cambridge, Massachusetts.