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(658)
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- Faculty Publications (340)
Show Results For
- All HBS Web
(658)
- News (56)
- Research (530)
- Events (13)
- Multimedia (3)
- Faculty Publications (340)
- January 2024
- Article
Dog Eat Dog: Balancing Network Effects and Differentiation in a Digital Platform Merger
By: Chiara Farronato, Jessica Fong and Andrey Fradkin
Digital platforms are increasingly the subject of regulatory scrutiny. In comparison to multiple competitors, a single platform may increase consumer welfare if network effects are large or may decrease welfare due to higher prices or reduction in platform variety. We... View Details
Keywords: Platform Differentiation; Digital Platforms; Network Effects; Measurement and Metrics; Mergers and Acquisitions; Outcome or Result
Farronato, Chiara, Jessica Fong, and Andrey Fradkin. "Dog Eat Dog: Balancing Network Effects and Differentiation in a Digital Platform Merger." Management Science 70, no. 1 (January 2024): 464–483.
- February 2016
- Article
Positive and Normative Judgments Implicit in U.S. Tax Policy, and the Costs of Unequal Growth and Recessions
By: Benjamin B. Lockwood and Matthew Weinzierl
Calculating the welfare implications of changes to economic policy or shocks to the economy requires economists to decide on a normative criterion. One way to make that decision is to elicit the relevant moral criteria from real-world policy choices, converting a... View Details
Lockwood, Benjamin B., and Matthew Weinzierl. "Positive and Normative Judgments Implicit in U.S. Tax Policy, and the Costs of Unequal Growth and Recessions." Journal of Monetary Economics 77 (February 2016): 30–47. (Also Harvard Business School Working Paper, No. 14-119, June 2014.)
- Article
Value of Information with Sequential Futures Markets
By: Jerry R. Green
The effects of an improvement in information on the efficiency of risk-bearing are studied under various systems of incomplete markets. With sequential futures markets for uncontingent delivery, the welfare effects are indeterminate in sign, except under special... View Details
Green, Jerry R. "Value of Information with Sequential Futures Markets." Econometrica 49, no. 2 (March 1981): 335–358.
- Research Summary
Physician vs. Patient Incentives in Prescription Drug Choice
The market for medical care involves interactions among patients, providers, and the insurers who pay for the care of their enrollees. The division of responsibilities creates scope for agency costs and moral hazard in the physician's treatment choice.... View Details
- 2020
- Working Paper
Dog Eat Dog: Balancing Network Effects and Differentiation in a Digital Platform Merger
By: Chiara Farronato, Jessica Fong and Andrey Fradkin
Digital platforms are increasingly the subject of regulatory scrutiny. In comparison to multiple competitors, a single platform may increase consumer welfare if network effects are large or may decrease welfare due to higher prices or reduction in platform variety. We... View Details
Keywords: Platform Differentiation; Digital Platforms; Network Effects; Measurement and Metrics; Mergers and Acquisitions; Outcome or Result
Farronato, Chiara, Jessica Fong, and Andrey Fradkin. "Dog Eat Dog: Balancing Network Effects and Differentiation in a Digital Platform Merger." NBER Working Paper Series, No. 28047, November 2020.
- May 1998
- Article
Market Structure, Innovation and Vertical Product Differentiation
By: Shane Greenstein and Garey Ramey
We reassess Arrow's (1962) [Economic Welfare and the Allocation of Resources for Invention, in NBER, The Rate and Direction of Innovative Activity (Princeton University Press, Princeton NJ)] results concerning the effect of market structure on the returns from process... View Details
Greenstein, Shane, and Garey Ramey. "Market Structure, Innovation and Vertical Product Differentiation." International Journal of Industrial Organization 16, no. 3 (May 1998): 285–311.
- July 2012
- Article
Discrete Choice Cannot Generate Demand That Is Additively Separable in Own Price
By: Sonia Jaffe and Scott Duke Kominers
We show that in a unit demand discrete choice framework with at least three goods, demand cannot be additively separable in own price. This result sharpens the analogous result of Jaffe and Weyl (2010) in the case of linear demand and has implications for testing of... View Details
Keywords: Discrete Choice; Unit Demand; Separable Demand; Linear Demand; Demand and Consumers; Market Design; Mathematical Methods; Economics
Jaffe, Sonia, and Scott Duke Kominers. "Discrete Choice Cannot Generate Demand That Is Additively Separable in Own Price." Economics Letters 116, no. 1 (July 2012): 129–132.
- Article
Behavioral Hazard in Health Insurance
By: Katherine Baicker, Sendhil Mullainathan and Joshua Schwartzstein
A fundamental implication of standard moral hazard models is overuse of low-value medical care because copays are lower than costs. In these models, the demand curve alone can be used to make welfare statements, a fact relied on by much empirical work. There is ample... View Details
Baicker, Katherine, Sendhil Mullainathan, and Joshua Schwartzstein. "Behavioral Hazard in Health Insurance." Quarterly Journal of Economics 130, no. 4 (November 2015): 1623–1667. (Online Appendix.)
- November 2013 (Revised March 2014)
- Technical Note
Tax Havens
By: Eric Werker, Sebastian Berardi, Stelios Elia, Omar Muakkassa and James Zumberge
Multinational corporations and wealthy individuals often use so-called tax havens to establish subsidiaries or holding companies in order to rebalance profits across borders with the primary purpose of lowering their effective tax rate. This note describes the use of... View Details
Werker, Eric, Sebastian Berardi, Stelios Elia, Omar Muakkassa, and James Zumberge. "Tax Havens." Harvard Business School Technical Note 714-019, November 2013. (Revised March 2014.)
- 25 Jan 2020
- News
HBS Online Will Keep Changing the Game. Here’s How
- 24 Jan 2020
- News
Lawmakers Weighing Options on Handgun Waiting Period
- Research Summary
Institutions and Markets
Alexander Dyck's academic articles, case studies and course development show how incentive policies, ownership structures, regulatory agencies and corporate governance institutions determine whether hopes for value creation through private sector expansion will be met.... View Details
"Behavioral Hazard in Health Insurance"
A fundamental implication of standard moral hazard models is overuse of low-value medical care because copays are lower than costs. In these models, the demand curve alone can be used to make welfare statements, a fact relied on by much empirical work. There is... View Details
- 2019
- Working Paper
Fiscal Rules and Sovereign Default
By: Laura Alfaro and Fabio Kanczuk
Recurrent concerns over debt sustainability in emerging and developed nations have prompted renewed debate on the role of fiscal rules. Their optimality, however, remains unclear. We provide a quantitative analysis of fiscal rules in a standard model of sovereign debt... View Details
Alfaro, Laura, and Fabio Kanczuk. "Fiscal Rules and Sovereign Default." Harvard Business School Working Paper, No. 16-134, June 2016. (Also NBER Working Paper w23370. Revised January 2019.)
- 2014
- Working Paper
SOX after Ten Years: A Multidisciplinary Review
By: John C. Coates and Suraj Srinivasan
We review and assess research findings from 120 papers in accounting, finance, and law to evaluate the impact of the Sarbanes-Oxley Act. We describe significant developments in how the Act was implemented and find that despite severe criticism, the Act and institutions... View Details
Keywords: Laws and Statutes
Coates, John C., and Suraj Srinivasan. "SOX after Ten Years: A Multidisciplinary Review." John M. Olin Center for Law, Economics, and Business Discussion Paper, No. 758, May 2014.
- Article
SOX after Ten Years: A Multidisciplinary Review
By: Suraj Srinivasan and John C. Coates IV
We review and assess research findings from 120+ papers in accounting, finance, and law to evaluate the impact of the Sarbanes-Oxley Act. We describe significant developments in how the Act was implemented and find that despite severe criticism, the Act and... View Details
Srinivasan, Suraj, and John C. Coates IV. "SOX after Ten Years: A Multidisciplinary Review." Accounting Horizons 28, no. 3 (September 2014): 627–671.
- September 2019
- Article
Optimizing Reserves in School Choice: A Dynamic Programming Approach
By: Franklyn Wang, Ravi Jagadeesan and Scott Duke Kominers
We introduce a new model of school choice with reserves in which a social planner is constrained by a limited supply of reserve seats and tries to find an optimal matching according to a social welfare function. We construct the optimal distribution of reserves via a... View Details
Wang, Franklyn, Ravi Jagadeesan, and Scott Duke Kominers. "Optimizing Reserves in School Choice: A Dynamic Programming Approach." Operations Research Letters 47, no. 5 (September 2019): 438–446.
- Article
Multilateral Matching
By: John William Hatfield and Scott Duke Kominers
We introduce a matching model in which agents engage in joint ventures via multilateral contracts. This approach allows us to consider production complementarities previously outside the scope of matching theory. We show analogues of the first and second welfare... View Details
Keywords: Matching; Stability; Competitive Equilibrium; Core; Networks; Competition; Joint Ventures; Balance and Stability; Groups and Teams; Entrepreneurship
Hatfield, John William, and Scott Duke Kominers. "Multilateral Matching." Journal of Economic Theory 156 (March 2015): 175–206.
- May 2016 (Revised October 2016)
- Case
Agricultural Revolution without a Land Revolution: the Megafarms of CP Group
By: William C. Kirby and Nancy Hua Dai
This case describes the megafarm model launched by the CP group as part of their efforts to ensure the safety and quality of their supply chain of agricultural products (particularly, eggs) in China while also promoting the welfare of Chinese farmers. This model was... View Details
Keywords: China; Poultry; Public-private Partnership; Animal-Based Agribusiness; Family Business; Agriculture and Agribusiness Industry; China
Kirby, William C., and Nancy Hua Dai. "Agricultural Revolution without a Land Revolution: the Megafarms of CP Group." Harvard Business School Case 316-150, May 2016. (Revised October 2016.)
- 2023
- Working Paper
Interest-Rate Risk and Household Portfolios
By: Sylvain Catherine, Max Miller, James Paron and Natasha Sarin
How are households exposed to interest-rate risk? When rates fall, households face lower future expected returns but those holding long-term assets—disproportionately the wealthy and middle-aged—experience capital gains. We study the hedging demand for long-term assets... View Details
Keywords: Portfolio Choice; Social Security; Interest Rates; Investment Portfolio; Equality and Inequality; Welfare
Catherine, Sylvain, Max Miller, James Paron, and Natasha Sarin. "Interest-Rate Risk and Household Portfolios." Working Paper, October 2023. (Reject and Resubmit, American Economic Review.)