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What Drives Demand for State-Run Lotteries? Evidence and Welfare Implications
(with Ben Lockwood, Dmitry Taubinsky, and Afras Sial)
Review of Economic Studies, forthcoming.
Download replication code. Download slides.

When Do "Nudges" Increase Welfare?
(with Daniel Cohen, William Morrison, and Dmitry Taubinsky)
Working Paper (April 2024). Revise and resubmit, American Economic Review.
Download replication code and data. Download survey instruments: cars experiment, drinks experiment. Download slides.

An Economic View of Corporate Social Impact
(with Giovanni Montanari, Bora Ozaltun, and Brandon Tan) 
Working Paper (October 2023). 
Download replication code. Download survey instrument. Download slides. Listen to discussion on the Scaling Impact podcast.

The Effects of Facebook and Instagram on the 2020 Election: A Deactivation Experiment
(with Winter Mason, Arjun Wilkins, ..., Natalie Jomini Stroud, and Joshua Tucker)
Proceedings of the National Academy of Sciences, Vol. 121, No. 21 (May 13, 2024).
Download online appendix. Apply for replication code and data. Read background information from SIEPR and in Medium. Read coverage in Bloomberg, El Pais, NBC News, Nieman Lab.

Asymmetric Ideological Segregation in Exposure to Political News on Facebook
(with Sandra Gonzales-Bailon, David Lazer, Pablo Barbera, Meiqing Zhang, ..., Natalie Jomini Stroud, and Joshua Tucker)
Science, Vol. 381, No. 6656 (July 28, 2023), pages 392-398.
Apply for replication code and data. Read background information in Science and Medium. Read coverage in the Atlantic, Bloomberg, Economic Times, Fast Company, Forbes, Guardian, Los Angeles Times, New York Times, NPR, Wall Street Journal, Washington Post, Wired.

How Do Social Media Feed Algorithms Affect Attitudes and Behavior in an Election Campaign?
(with Andrew Guess, Neil Malhotra, Jennifer Pan, Pablo Barbera, ..., Natalie Jomini Stroud, and Joshua Tucker)
Science, Vol. 381, No. 6656 (July 28, 2023), pages 398-404.

Reshares on Social Media Amplify Political News but Do Not Detectably Affect Beliefs or Opinions
(with Andrew Guess, Neil Malhotra, Jennifer Pan, Pablo Barbera, ..., Natalie Jomini Stroud, and Joshua Tucker)
Science, Vol. 381, No. 6656 (July 28, 2023), pages 404-408.

Like-Minded Sources on Facebook Are Prevalent but Not Polarizing
(with Brendan Nyhan, Jaime Settle, Emily Thorson, Magdalena Wojcieszak, Pablo Barbera, Annie Chen, ..., Natalie Jomini Stroud, and Joshua Tucker)
Nature, Vol. 620, No. 6656 (July 27, 2023), pages 137-144.

Measuring the Welfare Effects of Residential Energy Efficiency Programs
(with Michael Greenstone)
Working Paper (January 2024).
Download replication code. Download slides.

Optimal Regulation of E-cigarettes: Theory and Evidence
(with Charlie Rafkin)
American Economic Journal: Economic Policy, Vol. 114, No. 4 (November 2022), pages 1-50.
Download replication code. Download expert survey instrument. Download slides.

Digital Addiction
(with Matthew Gentzkow and Lena Song)
American Economic Review, Vol. 112, No. 7 (July 2022), pages 2424-2463.
Download online appendix. Download replication code and data. Download survey instruments. Download slides. Read our op-ed in the Washington Post. Read coverage in the Atlantic, Fast Company, SIEPR News. Listen to coverage on NPR Morning Edition, The Indicator from Planet Money, WGBH radio (as discussed by Jon Gruber).

Are High-Interest Loans Predatory? Theory and Evidence from Payday Lending
(with Joshua Kim, Dmitry Taubinsky, and Jonathan Zinman)
Review of Economic Studies, Vol. 89, No. 3 (May 2022), pages 1041-1084.
Download non-technical summary. Download replication code. Download slides.
Read coverage in CNBC, Marginal Revolution.

Polarization and Public Health: Partisan Differences in Social Distancing during the Coronavirus Pandemic
(with Levi Boxell, Jacob Conway, Matthew Gentzkow, Michael Thaler, and David Yang)
Journal of Public Economics, Vol. 191 (November 2020).
Download online appendix. Download replication code. Download slides. Read coverage in New York Times (May 2020), New York Times (April 2020), Economist, FiveThirtyEight, Newsweek, Los Angeles Times, Wired. Watch coverage on CNN.

The Welfare Effects of Social Media 
(with Luca Braghieri, Sarah Eichmeyer, and Matthew Gentzkow)
American Economic Review, Vol. 110, No. 3 (March 2020), pages 629-676.
Download online appendix. Download replication code. Download survey instruments. Watch video made by Econimate. Read coverage in New York Times, Economist (April 2024), Economist (February 2019), Washington Post, New Yorker, CNN, Bloomberg (January 2020), Bloomberg (February 2019), Fox News, Freakonomics Radio, London Times, Guardian, Newsweek, New York Post, Yahoo Finance, TechCrunch, Inc, Fortune, Fast Company, Salon, Vice, La Presse.

Food Deserts and the Causes of Nutritional Inequality
(with Rebecca Diamond, Jean-Pierre Dube, Jessie Handbury, Ilya Rahkovsky, and Molly Schnell)
Quarterly Journal of Economics, Vol. 134, No. 4 (November 2019), pages 1793-1844.
Download online appendix. Download replication code. Read our op-ed in The Conversation. Read coverage in Economist, Washington Post, Forbes, Vice, US News & World Report, CityLab.

Designing Better Sugary Drink Taxes
(with Anna Grummon, Benjamin B. Lockwood, and Dmitry Taubinsky)
Science, Vol. 365, No. 6457 (September 6, 2019), pages 989-990. 
Download supplementary materials. Download replication code. Read coverage in Guardian, Inverse, Nutrition Insight, AAAS, Science Daily.

Regressive Sin Taxes, with an Application to the Optimal Soda Tax 
(with Benjamin B. Lockwood and Dmitry Taubinsky)
Quarterly Journal of Economics, Vol. 134, No. 3 (August 2019), pages 1557-1626.
Download online appendix. Download replication code. Read coverage in Economist, Marketplace, Philadelphia Inquirer. Listen to coverage on Freakonomics MD.

Should We Tax Soda? An Overview of Theory and Evidence
(with Benjamin B. Lockwood and Dmitry Taubinsky)
Journal of Economic Perspectives, Vol 33, No. 3 (Summer 2019), pages 202-227.
Download replication code. Read our op-ed in the Los Angeles Times.

Trends in the Diffusion of Misinformation on Social Media
(with Matthew Gentzkow and Chuan Yu)
Research and Politics, Vol. 6, No. 2 (April-June 2019), pages 1-8.
Download online appendix. Download replication code. Read coverage in Economist, Wall Street Journal, Financial Times, Slate, Neiman Lab, Yahoo News, Verge.

Are Consumers Poorly Informed about Fuel Economy? Evidence from Two Experiments
(with Christopher Knittel)
American Economic Journal: Economic Policy, Vol. 11, No. 1 (February 2019), pages 1-37.
Download online appendix. Download replication code. Download experiment screen shots.

The Welfare Effects of Nudges: A Case Study of Energy Use Social Comparisons
(with Judd Kessler)
American Economic Journal: Applied Economics, Vol. 11, No. 1 (January 2019), pages 236-276.
Download replication code. Download policy briefing.

Ramsey Strikes Back: Optimal Commodity Taxes and Redistribution in the Presence of Salience Effects
(with Benjamin B. Lockwood and Dmitry Taubinsky)
American Economic Review, Papers and Proceedings, Vol. 108, No. 5 (May 2018), pages 88-92.
Download online appendix.

Dutch Disease or Agglomeration? The Local Economic Effects of Natural Resource Booms in Modern America
(with Daniel Keniston)
Review of Economic Studies, Vol. 85, No 2 (April 2018), pages 596-731.
Download online appendix. Download replication code.

Social Media and Fake News in the 2016 Election
(with Matthew Gentzkow)
Journal of Economic Perspectives, Vol. 31, No. 2 (Spring 2017), pages 211-236.
Download slides. Download replication code. Download dataset of fake news articles and Facebook engagements. Read coverage in New York Times (January 2018), New York Times (December 2017), New York Times (January 2017), Economist (2017), Economist (2023), Washington Post, New Yorker (January 2018), New Yorker (March 2017), Bloomberg, VoxEU, Financial Times, NPR, Christian Science Monitor, Vox, The Observer, The Hill, Verge,

The Role of Sales Agents in Information Disclosure: Evidence from a Field Experiment
(with Richard Sweeney)
Management Science, Vol. 63, No. 1 (January 2017), pages 21-39.
Download online appendix (includes simple theoretical model). Download replication code.

Opportunities for Advances in Climate Change Economics
(with Burke, Craxton, Kolstad, Onda, Baker, Barrage, Carson, Gillingham, Graff-Zivin, Greenstone, Hallegatte, Hanemann, Heal, Hsiang, Jones, Kelly, Kopp, Kotchen, Mendelsohn, Meng, Metcalf, Moreno-Cruz, Pindyck, Rose, Rudik, Stock, and Tol)
Science, Vol. 352, No. 6283 (April 15, 2016), pages 292-293.

How Do Electricity Shortages Affect Industry? Evidence from India
(with Allan Collard-Wexler and Stephen D. O'Connell)
American Economic Review, Vol. 106, No. 3 (March 2016), pages 587-624.
Download replication code.

Paternalism and Energy Efficiency: An Overview
Annual Review of Economics, Vol. 8 (2016), pages 145-176.
Download slides. Download replication code.

Evaluating Behaviorally Motivated Policy: Experimental Evidence from the Lightbulb Market
(with Dmitry Taubinsky)
American Economic Review, Vol 105, No. 8 (August 2015), pages 2501-2538.
Download replication code. Download online appendix. Download TESS audio files.

Site Selection Bias in Program Evaluation
Quarterly Journal of Economics, Vol. 130, No. 3 (August 2015), pages 1117-1165.
Download replication code.

Regulating Internalities
(with Cass R. Sunstein)
Journal of Policy Analysis and Management, Vol. 34, No. 2 (2015), pages 698-705.
Download "Counterpoint" rebuttals. Download longer supplementary version.
Read coverage in The Hill.

Tagging and Targeting of Energy Efficiency Subsidies
(with Christopher Knittel and Dmitry Taubinsky)
American Economic Review, Papers and Proceedings, Vol. 105, No. 5 (2015), pages 187-191.
Download replication code.

Gasoline Prices, Fuel Economy, and the Energy Paradox
(with Nathan Wozny)
Review of Economics and Statistics, Vol 96, No. 10 (December 2014), pages 779-795.
Download replication code.

The Short-Run and Long-Run Effects of Behavioral Interventions: Experimental Evidence from Energy Conservation
(with Todd Rogers)
American Economic Review, Vol. 104, No. 10 (October 2014), pages 3003-3037.
Download replication code.

Energy Policy with Externalities and Internalities
(with Sendhil Mullainathan and Dmitry Taubinsky)
Journal of Public Economics, Vol. 112 (April 2014), pages 72-88.
Download replication code.

The Welfare Effects of Misperceived Product Costs: Data and Calibrations from the Automobile Market
American Economic Journal: Economic Policy, Vol. 5, No. 3 (August 2013), pages 30-66.
Download online appendix. Download replication code.

Real-Time Pricing and Electricity Market Design
Permanent Working Paper (March 2013). 
Download replication code. Download NBER Working Paper. The NBER Working Paper includes additional sections on auction estimation and counterfactual simulation by iterative best response.

Is There an Energy Efficiency Gap?
(with Michael Greenstone)
Journal of Economic Perspectives, Vol. 26, No. 1 (Winter 2012), pages 3-28.
Download NBER Working Paper. The NBER working paper includes some additions and revisions made after the JEP version was published.
Read coverage in Bloomberg.

Rethinking Real-Time Electricity Pricing
Resource and Energy Economics, Vol. 33, No. 4 (November 2011), pages 820-842.
Download replication code.

Social Norms and Energy Conservation
Journal of Public Economics, Vol. 95, No 9-10 (October 2011), pages 1082-1095.
Winner of the Atkinson Award for the best paper published in the Journal of Public Economics in the past three years. 
Download replication code.
Read coverage in CNN, Discover Magazine, Pacific Standard, KQED, Grist.

Consumers’ Perceptions and Misperceptions of Energy Costs
American Economic Review, Papers and Proceedings, Vol. 101, No. 3 (May 2011), pages 98-104.
Download replication code.

Behavior and Energy Policy
(with Sendhil Mullainathan)
Science, Vol. 327, No. 5970 (March 5, 2010), pages 1204-1205.
Download longer supplementary version. Download replication code.
Read coverage in Time, NPR Science Friday, Grist.

Community Size and Network Closure
(with Dean Karlan, Markus Mobius, Tanya Rosenblat, and Adam Szeidl)
American Economic Review, Papers and Proceedings, Vol. 97, No. 2 (May 2007), pages 80-85.
Download replication code.