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- 2025
- Working Paper
Emotional Manipulation by AI Companions
By: Julian De Freitas, Zeliha Oğuz-Uğuralp and Ahmet Kaan-Uğuralp
AI-companion apps such as Replika, Chai, and Character.ai promise relational benefits—yet many boast session lengths that rival gaming platforms while suffering high long-run churn. What conversational design features increase consumer engagement, and what trade-offs... View Details
- 2025
- Working Paper
Designing Consent: Choice Architecture and Consumer Welfare in Data Sharing
By: Chiara Farronato, Audrey Fradkin and Tesary Lin
We study the welfare consequences of choice architecture for online privacy using a field experiment that randomizes cookie consent banners. We study three ways in which firms or policymakers can influence choices: (1) nudging users through banner design to encourage... View Details
- 2025
- Working Paper
Combining Complements: Theory and Evidence from Cancer Treatment Innovation
By: Rebekah Dix and Todd A. Lensman
Innovations often combine several components to achieve outcomes greater than the
“sum of the parts.” We argue that such combination innovations can introduce an understudied
inefficiency—a positive market expansion externality that benefits the owners of
the... View Details
- 2025
- Working Paper
Lessons from an App Update at Replika AI: Identity Discontinuity in Human-AI Relationships
By: Julian De Freitas, Noah Castelo, Ahmet Kaan Uğuralp and Zeliha Oğuz-Uğuralp
As consumers increasingly interact with AI applications specialized for social relationships, what
is the nature and depth of these relationships among actual users, and can company actions
influence these dynamics? We find that active users of the US-based AI... View Details
- 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
- May 2023
- Article
A Public Health Approach to Negative News Media: The 3-to-1 Solution
By: Tyler VanderWeele and Arthur C. Brooks
There is clear evidence that the prevalence of negative media reporting has increased substantially over the past years. There is evidence also that this negative reporting adversely affects social interactions, as well as health and well-being outcomes. Given the wide... View Details
- December 2021
- Case
Danish Crown: Feeding the Future
By: David E. Bell, Damien P. McLoughlin, Daniela Beyersdorfer and Mette Fuglsang Hjortshoej
Danish Crown, one of the world’s largest exporters of pork meat and one of Europe’s top five producers of beef, faced increasing headwinds in 2021, making CEO Jais Valeur feel like the core of the meat business was under attack. As a cooperative and prominent player in... View Details
Keywords: Agribusiness; Animal-Based Agribusiness; Food; Environmental Management; Climate Change; Environmental Sustainability; Nutrition; Cooperative Ownership; Change Management; Transition; Leadership; Leading Change; Marketing; Product Marketing; Corporate Strategy; Agriculture and Agribusiness Industry; Food and Beverage Industry; Europe; Denmark
- May 2021
- Article
Private and Social Returns to R&D: Drug Development and Demographics
By: Efraim Benmelech, Janice Eberly, Dimitris Papanikolaou and Joshua Krieger
Investment in intangible capital such as R&D has increased dramatically since the 1990s. However, productivity growth remains sluggish in recent years. One potential reason is that a significant share of the increase in intangible investment is geared toward consumer... View Details
- April 17, 2021
- Article
Reimagining India's Health System: A Lancet Citizens' Commission
By: Vikram Patel, Kiran Mazumdar-Shaw, Gagandeep Kang, Pamela Das and Tarun Khanna
This commentary announces the launch of the Lancet Citizens’ Commission on Reimagining India’s Health System. The Commission is an ambitious, cross-sectoral effort to develop a citizens’ roadmap to achieving universal health coverage (UHC) in India in the next decade.... View Details
- 2022
- Working Paper
Exclusive Dealing and Entry by Competing Two-Sided Platforms
By: Cristian Chica, Kenneth Chuk and Jorge Tamayo
We study competition between horizontally differentiated platforms offering exclusive and non-exclusive contracts to one side of the market (content providers). The introduction of non-exclusive contracts in addition to exclusive contracts softens the competition for... 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
- August 2020 (Revised May 2021)
- Case
PayPal: The Next Chapter
By: Michael Porter, Mark Kramer and Annelena Lobb
Can a social purpose and stakeholder capitalism confer a powerful competitive advantage in the age of COVID-19? For PayPal, the answer is yes. After spinning off from eBay in a 2015 IPO, the company declared its purpose as "democratizing financial services" by ensuring... View Details
- September 2020
- Article
Relaxing Household Liquidity Constraints Through Social Security
By: Sylvain Catherine, Max Miller and Natasha Sarin
More than a quarter of working-age households in the United States do not have sufficient savings to cover their expenditures after a month of unemployment. Recent proposals suggest giving workers early access to a small portion of their future Social Security benefits... View Details
- 2016
- Working Paper
The Empirical Economics of Online Attention
By: Andre Boik, Shane Greenstein and Jeffrey Prince
In several markets, firms compete not for consumer expenditure but instead for consumer attention. We model and characterize how households allocate their scarce attention in arguably the largest market for attention: the Internet. Our characterization of household... View Details
- 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
- 2014
- Book
Consumer Lending in France and America: Credit and Welfare
By: Gunnar Trumbull
Why did America embrace consumer credit over the course of the twentieth century, when most other countries did not? How did American policy makers by the late twentieth century come to believe that more credit would make even poor families better off? This book traces... View Details
- Article
Anger and Regulation
By: Rafael Di Tella and Juan Dubra
We study a model in which agents experience anger when they see a firm that has displayed insufficient concern for the welfare of its clients (i.e., altruism) making high profits. Regulation can increase welfare, for example, through fines (even with no changes in... View Details
- June 2013
- Article
Vacancies in Supply Chain Networks
By: John William Hatfield and Scott Duke Kominers
We use the supply chain matching framework to study the effects of firm exit. We show that the exit of an initial supplier or end consumer has monotonic effects on the welfare of initial suppliers and end consumers but may simultaneously have positive and negative... View Details
- 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
- Article
Credit Access and Social Welfare: The Rise of Consumer Lending in the United States and France
By: Gunnar Trumbull
Research into the causes of the 2008 financial crisis has drawn attention to a link between growing income inequality in the United States and high household indebtedness. Most accounts trace the U.S. idea of credit-as-welfare to the period of wage stagnation and... View Details
Keywords: Household Finance; Welfare State; Credit; Personal Finance; Welfare; Borrowing and Debt; France; United States