WORK IN PROGRESS 

• Difference-in-Difference Estimators of Prejudice: An Examination of the Existing Test and An Alternative
  (with Nicola Persico), Coming Soon.
  [Click Title to View the Slides]

• Why Do Life Insurance Policyholders Lapse? Liquidity Shock vs. Loss of Bequest Motive
  (with Edward Kung)
  [Click Title to Read an Abstract]

• Estimating Dynamic Discrete Choice Models with Hyperbolic Discounting, with an Application to Mammography Decisions
  (with Yang Wang), Preliminary Version, Marhc 2009.

• How Does the Life Settlement Affect the Primary Life Insurance Market?
  (with Edward Kung), Preliminary Version, June 2008.

• An Alternative Test of Hyperbolic Discounting Based on Sensitivity of Parameter Estimates to Time Aggregation
  Work in Progress, August 2009.
  

  RECENT WORKING PAPERS

• Microinsurance, Trust and Economic Development: Evidence from a Randomized Natural Field Experiment
  (with Hongbin Cai, Yuyu Chen and Li-An Zhou), September 2009

• Does Affirmative Action Lead to Mismatch? A New Test and Evidence
  (with Peter Arcidiacono, Esteban M. Aucejo and Kenneth I. Spenner), This Version, April 2009.
  [Media coverage at Inside Higher Education]
  

• Overcoming Participation Constraints
  (with Peter Norman), This Version, February 2006.
  Detailed Appendix for the derivations in the unraveling example.

• Separate When Equal? Racial Inequality and Residential Segregation
  (with Patrick Bayer and Robert McMillan), This Version, October 2005.

• Eat, Drink, Firms and Government: An Investigation of Corruption from Entertainment and Travel Costs of Chinese Firms
  (with Hongbin Cai and Lixin Xu), This Version, October 2009, revised and resubmitted to Journal of Law and Economics.
  [Media Coverages: South China Morning Post, Singapore Strait Times]
  [NBER Working Paper 11592 Version] [April 2009 Version]

• Optimal Provision of Multiple Excludable Public Goods
  (with Peter Norman), This Version, July 2009, revised and resubmitted to American Economic Journal: Microeconomics.
  Detailed External Appendix.
  This paper generalizes and supersedes versions previously titled "An Efficiency Rationale for Bundling of Public Goods" available as
  Cowles Foundation Discussion Paper 1441 and 1441R.
  

• Dynamic Inefficiencies in Employment-Based Health Insurance System: Theory and Evidence
  (with Alessandro Gavazza), This Version, March 2009.
  NBER Working Paper 13371 Version.

• Toward an Efficiency Rationale for the Public Provision of Private Goods
  (with Peter Norman), This Version,  July 2009.
  Appendix: Omitted Details for Some Derivations 

    PUBLISHED OR FORTHCOMING PAPERS

•  Time Inconsistency and Welfare Program Participation: Evidence From the NLSY
  (with Dan Silverman), International Economic Review, November 2009, Vol. 50, No. 4, 1043-1076.
  
  
•  Observational Learning: Evidence from a Randomized Natural Field Experiment
  (with Hongbin Cai and Yuyu Chen), forthcoming, American Economic Review, June 2009, Vol. 99, No. 3, 864-882.
  [Media coverage at: Wall Street Journal, LA Times, Duke News]
  [Online Appendix]
  [NBER Working Paper No. 13516 Version].

• Understanding Overbidding in Second Price Auctions: An Experimental Study
  (with David J. Cooper), Economic Journal, October 2008, Vol. 118, 1572–1595
  [Cowles Foundation Discussion Paper No. 1557 Version]

• Sources of Advantageous Selection: Evidence from the Medigap Insurance Market
  (with Michael P. Keane and Dan Silverman),  Journal of Political Economy, April 2008, Vol. 116, No. 2,  303-350.
  Winner of 17th Kenneth Arrow Award for the Best Paper in Health Economics Published in 2008, iHEA
  Finalist, NIHCM (National Institute for Health Care Management) Foundation Annual Research Award, 2009.
  [NBER Working Paper 12289 Version]

• Testing the Mechanisms of Structural Models: The Case of the Mickey Mantle Effect
  (with Michael P. Keane, Ahmed Khwaja, Martin Salm and Dan Silverman), American Economic Review Papers and Proceedings, May 2007, 53-59.
  [Appendix]  [Click Here for a version with the complete tables]
  
  
• To Bundle or Not to Bundle
  (with Peter Norman), Rand Journal of Economics, Winter 2006, Vol. 37, No. 4, 946-963.
  Supplemental Material: Appendix B. Mathematica Program for Numerical Analysis.

• Disentangling the College Wage Premium: Estimating a Model with Endogenous Education Choices
  International Economic Review, November 2006, Vol. 47, No. 4, 1151-1185. 

• Government-Mandated Discriminatory Policies: Theory and Evidence
  (with Peter Norman), International Economic Review, May 2006, Vol. 47, No. 2, 361-189.

•  An Alternative Test of Racial Prejudice in Motor Vehicle Searches: Theory and Evidence
  (with Shamena Anwar), American Economic Review, March 2006, Vol. 96, No. 1, 127-151.

• Distinguishing Between Cognitive Biases: Belief vs. Time Discounting in Welfare Program Participation
  (with Dan Silverman), in Behavioral Public Finance, edited by Edward McCaffery and Joel Slemrod,  pp. 47-81. Russell Sage Foundation, 2006.

• Multidimensional Private Value Auctions
  (with Stephen Morris), Journal of Economic Theory, January 2006, Vol. 126, 1-30. 

• Toward An Economic Theory of Dysfunctional Identity
  (with Glenn C. Loury)  in Social Economics of Poverty: On Identities, Groups, Communities and Networks, pp. 12-55. Edited by Christopher B. Barrett, London: Routledge, 2005.

• "Dysfunctional Identities" Can Be Rational
  (with Glenn C. Loury),  American Economic Review Papers and Proceedings, May 2005, May 2005: 104-111. 
  
  
• Morale Hazard
  (with Giuseppe Moscarini), Journal of Monetary Economics, May 2005, Vol. 52, 749-777. 
  
  
• Assessing the Impact of Welfare Reform on Single Mothers
  (with Michael P. Keane), Brookings Papers on Economic Activity, 2004, Volume 1, 1-116.

• On the Compassion of Time-Limited Welfare Programs
  (with Dan Silverman), Journal of Public Economics, Vol. 88, July 2004, 1445-1470. 

• On the Failure of the Linkage Principle with Financially Constrained Bidders   [Typesetting Error Correction] 
  (with Sergio O. Parreiras), Journal of Economic Theory, Vol 110, June 2003, 374–392.

•  Lottery versus All Pay Auction Models of Lobbying
  Public Choice, September 2002, 351-371.

• Equilibrium of Affiliated Value Second Price Auctions with Financially Constrained Bidders: The Two-Bidder Case
  (with Sergio O. Parreiras), Games and Economic Behavior, May 2002, 215-236.

• Social Culture and Economic Performance 
  American Economic Review,  September 2001, Vol. 91, No. 4, 924-937.

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