Affiliation: | 1. UC Berkeley, NBER United States, CEPR United Kingdom, CESIfo Germany;2. Department of Economics and Haas School of Business, University of California, 501 Evans Hall, Berkeley, CA 94720-3880 United States;3. University of Chicago, NBER United States, CEPR United Kingdom, CESIfo Germany;4. Booth School of Business, University of Chicago, 5807 South Woodlawn Avenue, Chicago, IL 60637, United States;5. Cornerstone Research, 699 Boylston Street, Boston, MA, 02116 United States |