Department of Economics
Harvard University
Cambridge, MA 02138
(617) 496-1939
Fax: (617) 495-8570



        Born November, 1970.
        U.S. Citizen.



Duke University 

Bachelor of Arts, 1991.

Majors in economics, mathematics, and computer science.
Magna Cum Laude. Phi Beta Kappa.

Stanford Graduate School of Business

Ph.D., 1995

Dissertation: "Comparative Statics in Stochastic Problems with Applications."

Advisors: Paul Milgrom and John Roberts (co-chairs), Edward Lazear.



Harvard University

        2006-present    Professor of Economics


National Bureau of Economic Research

        2001-present     Research Associate




Center for Advanced Study in the Behavioral Sciences

        2004-2005        Fellow


Department of Economics, Stanford University

        2001-2004    Associate Professor of Economics

        2004-2006    Holbrook Working Professor of Economics and Professor (by courtesy) in the Graduate School of Business


Department of Economics, Massachusetts Institute of Technology

        1999-2001     Castle Krob Career Development Associate Professor of Economics

        1997-1999     Castle Krob Career Development Assistant Professor of Economics

        1995-1997     Assistant Professor of Economics


Cowles Foundation for Economic Research, Yale University

        1997-1998     Visiting Assistant Professor of Economics


Hoover Institution, Stanford University

        2000-2001     National Fellow


National Bureau of Economic Research

        1997-2001     Faculty Research Fellow




2008-present        Visiting/Consulting Researcher, Microsoft Research, New England

2007-present      Consultant to Microsoft Corporation as Chief Economist

        2008-present       Academic Affiliate, Analysis Group Economics

        2001-present       Principal, Market Design, Inc.

        April,1999; October, 2000; February, 2001        Consultant, Research Department, Minneapolis Federal Reserve Bank       

        May, 1998           Visiting Professor, I.D.E.I. Toulouse. 












  1. "Position Auctions with Consumer Search," (with Glenn Ellison). Quarterly Journal of Economics, 2011, 126(3), 123-1270.
  2. "Comparing Open and Sealed Bid Auctions: Theory and Evidence from Timber Auctions," (with Jonathan Levin and Enrique Seira). Quarterly Journal of Economics, 2011, 126(1), 207-257.
  3. "The Impact of Targeting Technology on Advertising Markets and Media Competition, with Joshua Gans, American Economic Review, May 2010.
  4. "Skewed Bidding in Pay Per Action Models of Online Advertising," with Nikhil Agarwal and David Yang. American Economic Review, May 2009.
  5. "Collusion with Persistent Cost Shocks," (with Kyle Bagwell). Econometrica, May 2008, 76 (3), 493-540.
  6. "Designing Efficient Mechanisms for Dynamic Bilateral Trading Games," (with Ilya Segal), American Economic Review, May 2008.
  7. "Efficiency in Repeated Trade with Hidden Valuations," (with David Miller). Theoretical Economics, 2007, 2 (3), 299-354.
  8. "Discrete Choice Models with Multiple Unobserved Choice Characteristics," (with Guido Imbens). International Economic Review, 2007, 48 (4), 1159-1192.
  9. "What Does Performance in Graduate School Predict? Graduate Economics Education and Student Outcomes" (with Larry Katz, Alan Krueger, James Poterba, and Steve Levitt), American Economic Review, May 2007.
  10. "Identification and Inference in Nonlinear Difference-In-Difference Models," (with Guido Imbens). Econometrica 74 (2), March, 2006, 431-498.
  11. "The Optimal Degree of Monetary Policy Discretion," (with Andrew Atkeson and Patrick Kehoe), Econometrica 73 (5), September, 2005, 1431-1476.
  12. "Collusion and Price Rigidity," (with Kyle Bagwell and Chris Sanchirico). Review of Economic Studies 71 (2), April 2004, 317-349.
  13. "Identification in Standard Auction Models," (with Philip Haile),  Econometrica, 70 (6), November 2002, pp. 2107-2140.
  14. "The Impact of Information Technology on Emergency Health Care Outcomes," (with Scott Stern), RAND Journal of Economics, 33 (3), Autumn 2002, pp. 399-432.
  15. "Monotone Comparative Statics Under Uncertainty,"  Quarterly Journal of Economics, February 2002, CXVII (1): 187-223.
  16. "Optimal Collusion with Private Information," (with Kyle Bagwell), RAND Journal of Economics, Autumn 2001, 32 (3): 428-465.
  17. "Single Crossing Properties and the Existence of Pure Strategy Equilibria in Games of Incomplete Information," Econometrica 69 (4), July, 2001: 861-890.
  18. "Organizational Design: Decision Rights and Incentive Contracts," (with John Roberts), American Economic Review, May 2001.
  19. "Information and Competition in U.S. Forest Service Timber Auctions," (with Jonathan Levin), Journal of Political Economy, 109 (2), April 2001.  Reprinted in: Empirical Industrial Organization, Paul Joskow and Michael Waterson, ed., Critical Ideas in Economics, Edward Elgar, forthcoming 2004.
  20. "Investment and Market Dominance," (with Armin Schmutzler), RAND Journal of Economics 32 (1), Spring 2001: 1-26.
  21. "Mentoring and Diversity," (with Chris Avery and Peter Zemsky), American Economic Review 90 (4) September 2000: 765-786.
  22. "Information Technology and Training in Emergency Call  Centers."  (with Scott Stern). Proceedings of the Fifty-First Annual Meetings (New York, Jan 3-5, 1999). Madison, WI: Industrial Relations Research Association, pp. 53-60.
  23. "Product and Process Flexibility in an Innovative Environment, "(with Armin Schmutzler), RAND Journal of Economics, 26 (4) Winter1995: 557-574.



  1. Dynamic Games and Contracts with Hidden Information, In Progress.  Toulouse Lectures in Economics 2007, Princeton University Press.
  2. "Empirical Models of Auctions," in Advances in Economics and Econometrics: Theory and Applications, Ninth World Congress, Volume II. Richard Blundell, Whitney K. Newey, Torsten Persson, eds., Cambridge University Press, 2007.
  3. "Nonparametric Approaches to Auctions," forthcoming, Handbook of Econometrics, Volume 6.
  4. Robust Comparative Statics (with Paul Milgrom and John Roberts), research monograph (draft form).
  5. "Adoption and Impact of Advanced Technologies in Emergency Response Systems," (with Scott Stern), in The Changing Hospital Industry: Comparing Not-for-Profit and For-Profit Institutions, David Cutler, ed.  University of Chicago Press, 2000, pp. 113-155.



  1. “The Impact of the Internet on Advertising Markets for News Media” (with Emilio Calvano and Joshua Gans).  Working paper.
  2. “The Impact of News Aggregators on Internet News Consumption: The Case of Localization” (with Markus Mobius).  Working paper.
  3. “Peaches, Lemons, and Cookies: Designing Auction Markets with Dispersed Information.”  With Moshe Babaioff, Michael Grubb and Ittai Abraham.  Working paper.
  4. "Subsidies and Set-Asides in Auctions," (with Jonathan Levin and Dominic Coey).  Under review.
  5. "A Structural Model of Sponsored Search Advertising Markets" (with Denis Nekipelov).  Under review.
  6. "A Theory of Group Formation and Social Hierarchy," (with Saumitra Jha and Emilio Calvano). Under review.
  7. "Dynamics of Open Source Movements," (with Glenn Ellison). Under review.
  8. "An Efficient Dynamic Mechanism," (with Ilya Segal). Under review.
  9. "Characterizing Properties of Stochastic Objective Functions,"  MIT Working Paper 96-1R. Revise & Resubmit, B.E. Journals in Theoretical Economics.
  10. "Investment and Information Value for a Risk-Averse Firm," MIT Working Paper No. 00-30.  Revise & Resubmit, B.E. Journals in Theoretical Economics.
  11. "The Value of Information in Monotone Decision Problems" (with Jonathan Levin), MIT Working Paper No. 98-24, November 1998.
  12. "An Empirical Framework for Testing Theories about Complementarities in Organizational Design," (with Scott Stern).  NBER Working Paper 6600, February 1998. Revise & Resubmit, Management Science.
  13. "The Allocation of Decisions in Organizations," (with Joshua Gans and Scott Stern), Mimeo, MIT, 1996.



  1. “Social Media and Internet News Consumption” (with Markus Mobius).  In progress.
  2. "Dynamic Auctions with Persistent Private Information," (with Kyle Bagwell). In progress.
  3. "Authority and Incentives," (with John Roberts), In progress.