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Show Results For
- All HBS Web
(945)
- People (2)
- News (122)
- Research (723)
- Events (14)
- Multimedia (1)
- Faculty Publications (394)
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- 2020
- Working Paper
Socioeconomic Network Heterogeneity and Pandemic Policy Response
By: Abhishek Nagaraj, Mohammad Akbarpour, Cody Cook, Aude Marzuoli, Simon Mongey, Matteo Saccarola, Pietro Tebaldi, Shoshana Vasserman and Hanbin Yang
We develop and implement a heterogeneous-agents network-based empirical model to analyze alternative policies during a pandemic outbreak. We combine several data sources, including information on individuals’ mobility and encounters across metropolitan areas,... View Details
Nagaraj, Abhishek, Mohammad Akbarpour, Cody Cook, Aude Marzuoli, Simon Mongey, Matteo Saccarola, Pietro Tebaldi, Shoshana Vasserman, and Hanbin Yang. "Socioeconomic Network Heterogeneity and Pandemic Policy Response." Working Paper, June 2020.
- April–June 2022
- Other Article
Commentary on 'Causal Decision Making and Causal Effect Estimation Are Not the Same... and Why It Matters'
There has been a substantial discussion in various methodological and applied literatures around causal inference; especially in the use of machine learning and statistical models to understand heterogeneity in treatment effects and to make optimal decision... View Details
Keywords: Causal Inference; Treatment Effect Estimation; Treatment Assignment Policy; Human-in-the-loop; Decision Making; Fairness
McFowland III, Edward. "Commentary on 'Causal Decision Making and Causal Effect Estimation Are Not the Same... and Why It Matters'." INFORMS Journal on Data Science 1, no. 1 (April–June 2022): 21–22.
- 2012
- Chapter
The Confederacy of Heterogeneous Software Organizations and Heterogeneous Developers: Field Experimental Evidence on Sorting and Worker Effort
By: Kevin J. Boudreau and Karim R. Lakhani
Software development occurs in a patchwork or "confederacy" of different types of institutions (universities, small start-ups, multinational enterprises, government agencies, etc.) utilizing varied work approaches. Here we speculate on one possible explanation for this... View Details
Keywords: Innovation and Invention; Applications and Software; Product Development; Organizations; Employees; Behavior; Competition; Cooperation; Creativity; Information Technology Industry
Boudreau, Kevin J., and Karim R. Lakhani. "The Confederacy of Heterogeneous Software Organizations and Heterogeneous Developers: Field Experimental Evidence on Sorting and Worker Effort." In The Rate and Direction of Inventive Activity Revisited, edited by Josh Lerner and Scott Stern, 483–502. University of Chicago Press, 2012.
- 2014
- Working Paper
De Gustibus non est Taxandum: Heterogeneity in Preferences and Optimal Redistribution
By: Benjamin B Lockwood and Matthew Weinzierl
The prominent but unproven intuition that preference heterogeneity reduces redistribution in a standard optimal tax model is shown to hold under the plausible condition that the distribution of preferences for consumption relative to leisure rises, in terms of... View Details
Lockwood, Benjamin B., and Matthew Weinzierl. "De Gustibus non est Taxandum: Heterogeneity in Preferences and Optimal Redistribution." Harvard Business School Working Paper, No. 12-063, January 2012. (Updated September 2014. NBER Working Paper Series, No. 17784. Published in Journal of Public Economics.)
- Article
De Gustibus non est Taxandum: Heterogeneity in Preferences and Optimal Redistribution
By: Benjamin B Lockwood and Matthew Weinzierl
The prominent but unproven intuition that preference heterogeneity reduces redistribution in a standard optimal tax model is shown to hold under the plausible condition that the distribution of preferences for consumption relative to leisure rises, in terms of... View Details
Keywords: Motivation and Incentives; Income; Decision Choices and Conditions; Consumer Behavior; Taxation; Microeconomics; Macroeconomics
Lockwood, Benjamin B., and Matthew Weinzierl. "De Gustibus non est Taxandum: Heterogeneity in Preferences and Optimal Redistribution." Journal of Public Economics 124 (April 2015): 74–80. (Also NBER Working Paper Series, No. 17784, September 2014 and Harvard Business School Working Paper, No. 12-063, January 2012.)
- 2019
- Working Paper
The Comprehensive Effects of a Digital Paywall Sales Strategy
By: Doug J. Chung, Ho Kim and Reo Song
This paper explores the multiple and comprehensive effects of a digital paywall sales strategy, an increasingly common means of go-to-market for media firms. Specifically, we examine the effects of a digital paywall on a media firm’s two sources of income—subscription... View Details
Keywords: Digital Paywall; Demand Substitution; Spillover Effect; Synthetic Control; Sales; Strategy; Media; Newspapers; Publishing Industry
Chung, Doug J., Ho Kim, and Reo Song. "The Comprehensive Effects of a Digital Paywall Sales Strategy." Harvard Business School Working Paper, No. 19-118, May 2019.
- 2022
- Working Paper
A Linear Panel Model with Heterogeneous Coefficients and Variation in Exposure
By: Jesse M. Shapiro and Liyang Sun
Linear panel models featuring unit and time fixed effects appear in many areas of empirical economics. An active literature studies the interpretation of the ordinary least squares estimator of the model, commonly called the two-way fixed effects (TWFE) estimator, in... View Details
Shapiro, Jesse M., and Liyang Sun. "A Linear Panel Model with Heterogeneous Coefficients and Variation in Exposure." NBER Working Paper Series, No. 29976, April 2022.
- 24 Jun 2008
- Conference Presentation
The effect of heterogeneous institutional actors on entrepreneurial activity and resource attainment in the U.S. biodiesel industry
By: Shon R. Hiatt
- January 2013
- Article
Preference Heterogeneity and Optimal Capital Income Taxation
By: Mikhail Golosov, Maxim Troshkin, Aleh Tsyvinski and Matthew Weinzierl
We examine a prominent justification for capital income taxation: goods preferred by those with high ability ought to be taxed. In an environment where commodity taxes are allowed to be nonlinear functions of income and consumption, we derive an analytical expression... View Details
Keywords: Taxation
Golosov, Mikhail, Maxim Troshkin, Aleh Tsyvinski, and Matthew Weinzierl. "Preference Heterogeneity and Optimal Capital Income Taxation." Journal of Public Economics 97 (January 2013): 160–175. (Also NBER Working Paper Series, No. 16619, December 2010.)
- Article
Market Heterogeneity and Local Capacity Decisions in Services
By: Dennis Campbell and Frances X. Frei
We empirically document factors that influence how local operating managers use discretion to balance the tradeoff between service capacity costs and customer sensitivity to service time. Our findings, using data from one of the largest financial services providers in... View Details
Keywords: Customer Satisfaction; Cost; Standards; Service Delivery; Service Operations; Performance Capacity; Performance Productivity; Financial Services Industry; United States
Campbell, Dennis, and Frances X. Frei. "Market Heterogeneity and Local Capacity Decisions in Services." Manufacturing & Service Operations Management 13, no. 1 (Winter 2011): 2–19. (Lead Article.)
- 2016
- Chapter
Changing Behavior Beyond the Here and Now
By: Todd Rogers and Erin Frey
Rogers, Todd, and Erin Frey. "Changing Behavior Beyond the Here and Now." In The Wiley Blackwell Handbook of Judgment and Decision Making, edited by Gideon Keren and George Wu, 725–748. Wiley-Blackwell, 2016.
- 2024
- Working Paper
Antibiotic Treatments for Ulcers--Eradicating H-Pylori Infections: Case Histories of Transformational Advances
By: Amar Bhidé, Srikant M. Datar and Katherine Stebbins
This case history describes how a chance discovery of bacteria that infect stomach linings completely changed how physicians treat ulcers. Specifically, we chronicle how: 1) two Australian physicians brought the bacterial infection to the world’s attention and... View Details
Keywords: Health Care and Treatment; Technological Innovation; Innovation Strategy; Technology Adoption; Collaborative Innovation and Invention; Innovation and Invention; Governing Rules, Regulations, and Reforms
Bhidé, Amar, Srikant M. Datar, and Katherine Stebbins. "Antibiotic Treatments for Ulcers--Eradicating H-Pylori Infections: Case Histories of Transformational Advances." Harvard Business School Working Paper, No. 20-006, July 2019. (Revised May 2024.)
- 2019
- Working Paper
Racial Heterogeneity and Local Government Finances: Evidence from the Great Migration
By: Marco Tabellini
Between 1915 and 1930, during the First Great Migration, more than 1.5 million African Americans migrated from the South to the North of the United States, altering the racial profile of several northern cities for the first time in American history. I exploit this... View Details
Keywords: Migration; Race; City; Financial Condition; Government and Politics; History; United States
Tabellini, Marco. "Racial Heterogeneity and Local Government Finances: Evidence from the Great Migration." Harvard Business School Working Paper, No. 19-006, July 2018. (Revised September 2019. Featured in Harvard Magazine.)
- 2021
- Working Paper
How Much Should We Trust Staggered Difference-In-Differences Estimates?
By: Andrew C. Baker, David F. Larcker and Charles C.Y. Wang
Difference-in-differences analysis with staggered treatment timing is frequently used to assess the impact of policy changes on corporate outcomes in academic research. However, recent advances in econometric theory show that such designs are likely to be biased in the... View Details
Keywords: Difference In Differences; Staggered Difference-in-differences Designs; Generalized Difference-in-differences; Dynamic Treatment Effects; Mathematical Methods
Baker, Andrew C., David F. Larcker, and Charles C.Y. Wang. "How Much Should We Trust Staggered Difference-In-Differences Estimates?" European Corporate Governance Institute Finance Working Paper, No. 736/2021, February 2021. (Harvard Business School Working Paper, No. 21-112, April 2021.)
- 23 Aug 2006
- Op-Ed
The Real Wal-Mart Effect
the world's largest company, primarily focused on its treatment of workers. The recent spate of books on the company is no exception. Some are overtly critical, for example Anthony Bianco's The Bully of Bentonville: How the High Cost of... View Details
- 2007
- Working Paper
Taxes and Portfolio Choice: Evidence from JGTRRA's Treatment of International Dividends
By: Mihir A. Desai and Dhammika Dharmapala
This paper investigates how taxes influence portfolio choices by exploring the response to the distinctive treatment of foreign dividends in the Jobs and Growth Tax Relief Reconciliation Act (JGTRRA). JGTRRA lowered the dividend tax rate to 15% for American equities... View Details
- 2011
- Other Unpublished Work
The Performance Effects of Regulatory Oversight
This paper explores the heterogeneity in firm performance that can arise from exogenously varying levels of oversight in regulated industries. We use data on the performance of U.S. commercial banks to show that banks located physically closer to their supervisors'... View Details
- Article
How Much Should We Trust Staggered Difference-In-Differences Estimates?
By: Andrew C. Baker, David F. Larcker and Charles C.Y. Wang
We explain when and how staggered difference-in-differences regression estimators, commonly applied to assess the impact of policy changes, are biased. These biases are likely to be relevant for a large portion of research settings in finance, accounting, and law that... View Details
Keywords: Difference In Differences; Staggered Difference-in-differences Designs; Generalized Difference-in-differences; Dynamic Treatment Effects; Mathematical Methods
Baker, Andrew C., David F. Larcker, and Charles C.Y. Wang. "How Much Should We Trust Staggered Difference-In-Differences Estimates?" Journal of Financial Economics 144, no. 2 (May 2022): 370–395. (Editor's Choice, May 2022; Jensen Prize, First Place, June 2023.)
- August 2024
- Article
The Labor Market Effects of Loan Guarantee Programs
By: Jean-Noël Barrot, Thorsten Martin, Julien Sauvagnat and Boris Vallée
We investigate the labor market effects of a loan guarantee program targeting French SMEs during the financial crisis. Exploiting differences in regional treatment intensity in a border discontinuity design, we uncover a central trade-off for such interventions. While... View Details
Barrot, Jean-Noël, Thorsten Martin, Julien Sauvagnat, and Boris Vallée. "The Labor Market Effects of Loan Guarantee Programs." Review of Financial Studies 37, no. 8 (August 2024): 2315–2354.
- 2013
- Working Paper
Competing by Restricting Choice: The Case of Search Platforms
By: Hanna Halaburda and Mikolaj Jan Piskorski
Seminal papers recommend that platforms in two-sided markets increase the number of complements available. We show that a two-sided platform can successfully compete by limiting the choice of potential matches it offers to its customers while charging higher prices... View Details
Keywords: Matching Platform; Indirect Network Effects; Limits To Network Effects; Decision Choices and Conditions; Network Effects; Two-Sided Platforms; Marketplace Matching; Competitive Strategy
Halaburda, Hanna, and Mikolaj Jan Piskorski. "Competing by Restricting Choice: The Case of Search Platforms." Harvard Business School Working Paper, No. 10-098, May 2010. (Revised June 2010, March 2011, August 2011, March 2013.)