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Published Papers

Optimal Gerrymandering: Sometimes Pack but Never Crack
American Economic Review, 98(1): 113-144, March 2008
(joint with Richard Holden)

The Rising Incumbent Advantage: What's Gerrymandering Got To Do With It?
Journal of Politics, 71(2): 593-611, 2009
(joint with Richard Holden)
See Also: Web Appendix and Redistricting Dataset

Performance Improvement and Performance Dysfunction: An Empirical Examination of Distortionary Impacts
of the Emergency Room Wait-Time Target in the English National Health Service

Journal of Public Administration Research and Theory, 19(4): 947-966, October 2009
(joint with Steve Kelman)

Predicting Medicare Cost Growth
Chapter in Improving Health Cost Projections for the Medicare Population
Committee on National Statistics and National Research Council Workshop Summary, 2010

Adjustment Costs, Firm Responses, and Micro vs. Macro Labor Supply Elasticities:
Evidence from Danish Tax Records

Quarterly Journal of Economics, 126(2): 749-804, May 2011
(joint with Raj Chetty, Tore Olsen, and Luigi Pistaferri)
See Also: Online Appendix and Program to Calculate Bunching in STATA

How Does Your Kindergarten Classroom Affect Your Earnings? Evidence from Project STAR
Quarterly Journal of Economics, 126(4): 1593-1660, November 2011
(joint with Raj Chetty, Nate Hilger, Emmanuel Saez, Diane Schanzenbach, and Danny Yagan)
See Also: Slides and Non-Technical Summary

Using Differences in Knowledge Across Neighborhood to Uncover the Impacts of the EITC on Earnings
American Economic Review, 103(7): 2683-2721, December 2013
(joint with Raj Chetty and Emmanuel Saez)
See Also: Web Appendix, Slides, NRP Tabulations, NBER WP 18232 (Longer Version with Complete Results), and Publicly Available Files (Code, Data, and Sharp Bunching Measures by ZIP-3)

Active vs. Passive Decisions and Crowd-out in Retirement Savings Accounts: Evidence from Denmark
Quarterly Journal of Economics, 129(3): 1141-1219, August 2014
(joint with Raj Chetty, Soren Leth-Petersen, Torben Heien Nielsen, and Tore Olsen)
See Also: Slides, Online Appendix, and Executive Summary

Measuring the Impacts of Teacher I: Evaluating Bias in Teacher Value-Added Estimates
American Economic Review, 104(9): 2593-2632, September 2014 (joint-lead article)
(joint with Raj Chetty and Jonah Rockoff)
See Also: Study Website (with executive summary, data, and code), Old Joint NBER WP 17699 (without drift adjustment), and Slides

Measuring the Impacts of Teachers II: Teacher Value-Added and Students Outcomes in Adulthood
American Economic Review, 104(9): 2633-2679, September 2014 (joint-lead article)
(joint with Raj Chetty and Jonah Rockoff)
See Also: Study Website (with executive summary, data, and code), Old Joint NBER WP 17699 (without drift adjustment), and Slides

Identification and Inference with Many Invalid Instruments
Journal of Business and Economic Statistics, Forthcoming
(joint with Michal Kolesar, Raj Chetty, Edward Glaeser and Guido Imbens)

Working Papers

NEW Prior Test Scores Do Not Provide Valid Placebo Tests of Teacher Switching Research Designs
September 2014
(joint with Raj Chetty and Jonah Rockoff)

The Incidence of the Medicare Prescription Drug Benefit: Using Asset Prices to Assess
its Impact on Drug Makers

January 2011

Effort As Investment: Analyzing the Response to Incentives
March 2011, (revise and resubmit at AEJ: Public Policy)
(joint with Steven Kelman)

Optimal Gerrymandering in a Competitive Environment
December 2010
(joint with Richard Holden)



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