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- 2025
- Working Paper
Extractive Taxation and the French Revolution
By: Tommaso Giommoni, Gabriel Loumeau and Marco Tabellini
We study the fiscal determinants of the French Revolution, exploiting plausibly exogenous variation in the salt tax—a large source of royal revenues and one of the most extractive forms of taxation of the Ancien Régime. Implementing a Regression Discontinuity... View Details
- 2025
- Article
Emotion Regulation Contagion Drives Reduction in Negative Intergroup Emotions
By: Michael Pinus, Yajun Cao, Eran Halperin, Alin Coman, James J. Gross and Amit Goldenberg
When emotions occur in groups, they sometimes impact group behavior in undesired ways. Reducing group’s emotions with emotion regulation interventions can be helpful, but may also be a challenge, because treating every person in the group is often infeasible. One... View Details
- 2024
- Other Unpublished Work
A Proposal for the IMF: A New Instrument of International Liquidity Provision for Emerging Markets and Developing Economies
By: Laura Alfaro, Guillermo Calvo, José de Gregorio, Augusto de la Torre, Pablo Guidotti, Enrique Mendoza, Ernesto Talvi, Liliana Rojas-Suarez and Andrés Velasco
This paper addresses a critical flaw in the international financial system: the failure to address the inherent asymmetry between countries that issue reserve currencies and those that do not, leaving the latter vulnerable during systemic liquidity crises. We propose... View Details
- August 1, 2024
- Article
How to Build a Life: Inoculate Yourself Against Social Contagion
By: Arthur C. Brooks
- 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
- Winter 2022
- Article
Determinants of Small Business Reopening Decisions After COVID Restrictions Were Lifted
By: Dylan Balla-Elliott, Zoë B. Cullen, Edward L. Glaeser, Michael Luca and Christopher Stanton
The COVID-19 pandemic led to dramatic economic disruptions, including government-imposed restrictions that temporarily shuttered millions of American businesses. We use a nation-wide survey of thousands of small business owners to establish three main facts about... View Details
- December 2021
- Article
Negativity Spreads More Than Positivity on Twitter after Both Positive and Negative Political Situations
By: Jonas Paul Schöne, Brian Parkinson and Amit Goldenberg
What type of emotional language spreads further in political discourses on social media? Previous research has focused on situations that primarily elicited negative emotions, showing that negative language tended to spread further. The current project extends existing... View Details
- November 2021
- Article
Ratings, Reviews, and the Marketing of New Products
By: Itay P. Fainmesser, Dominique Olié Lauga and Elie Ofek
We study how user-generated content (UGC) about new products impacts a firm's advertising and pricing decisions and the effect on profits and market dynamics. We construct a two-period model where consumers value quality and are heterogeneous in their taste for the new... View Details
- February 2021
- Article
Platform Diffusion at Temporary Gatherings: Social Coordination and Ecosystem Emergence
By: Tommy Pan Fang, Andy Wu and David R. Clough
Software platforms create value by cultivating an ecosystem of complementary products and services. Existing explanations for how a prospective complementor chooses platforms to join assume the complementor has rich information about the range of available platforms.... View Details
Keywords: Innovation Ecosystems; Technology Diffusion; Hackathon; Contagion; Software Applications; Software Development; Software Engineering; Technology Strategy; Technology Adoption; Technological Innovation; Information Infrastructure; Innovation Strategy; Digital Platforms; Network Effects; Applications and Software; Information Technology; Technology Industry; Computer Industry; Information Technology Industry; Video Game Industry
- April 2020
- Article
Digital Emotion Contagion
By: Amit Goldenberg and James J. Gross
People spend considerable time on digital media, and during this time they are often exposed to others’ emotion expressions. This exposure can lead their own emotion expressions to become more like others’ emotion expressions, a process we refer to as digital emotion... View Details
- Article
Beyond Emotional Similarity: The Role of Situation-specific Motives
By: Amit Goldenberg, David Garcia, Eran Halperin, Jamil Zaki, Danyang Kong, Golijeh Golarai and James J. Gross
It is well established that people often express emotions that are similar to those of other group members. However, people do not always express emotions that are similar to other group members, and the factors that determine when similarity occurs are not yet clear.... View Details
- February 2018
- Case
Robert K. Steel at Wachovia (A)
By: Gautam Mukunda, Nien-hê Hsieh and David Lane
In September 2008, Robert Steel presided over the sale of Wachovia, a top U.S. bank, less than three months after becoming its CEO. Wachovia’s exposure to risky home loans led depositors and creditors to flee the bank on Friday, September 26, after the FDIC seized and... View Details
Keywords: Leadership; Financial Crisis; Robert Steel; Wachovia; Sheila Bair; Richard Kovacevich; Wells Fargo; Vikram Pandit; Citigroup; FDIC; Tim Geithner; Mortgage Lending; Contagion; Mergers And Acquisitions; Financial Services; Banking; Decision Making; Ethics; Fairness; Finance; Leadership Style; Crisis Management; Management Style; Risk Management; Negotiation; Business and Stakeholder Relations; Banking Industry; United States
- February 2018
- Supplement
Robert K. Steel at Wachovia (B)
By: Gautam Mukunda, Nien-hê Hsieh and David Lane
In September 2008, Robert Steel presided over the sale of Wachovia, a top U.S. bank, less than three months after becoming its CEO. Wachovia’s exposure to risky home loans led depositors and creditors to flee the bank on Friday, September 26, after the FDIC seized and... View Details
Keywords: Leadership; Financial Crisis; Robert Steel; Wachovia; Sheila Bair; Richard Kovacevich; Wells Fargo; Vikram Pandit; Citigroup; FDIC; Tim Geithner; Mortgage Lending; Contagion; Mergers And Acquisitions; Financial Services; Banking; Decision Making; Ethics; Fairness; Finance; Leadership Style; Crisis Management; Management Style; Risk Management; Negotiation; Business and Stakeholder Relations; Banking Industry; United States
- January 2018 (Revised January 2021)
- Background Note
Customer Lifetime Social Value (CLSV)
By: Elie Ofek, Barak Libai and Eitan Muller
One of the hallmarks of the digital revolution is the rise of the socially connected consumer. Concomitantly, the ability of companies to affect and measure the social interactions among customers has grown tremendously. Consequently, in assessing the full value of... View Details
- 2016
- Article
Vicarious Contagion Decreases Differentiation—and Comes with Costs
By: Ovul Sezer and Michael I. Norton
Baumeister et al. propose that individual differentiation is a crucial determinant of group success. We apply their model to processes lying in between the individual and the group—vicarious processes. We review literature in four domains—attitudes, emotions, moral... View Details
- March 2015
- Article
Vulnerable Banks
By: Robin Greenwood, Augustin Landier and David Thesmar
We present a model in which fire sales propagate shocks across bank balance sheets. When a bank experiences a negative shock to its equity, a natural way to return to target leverage is to sell assets. If potential buyers are limited, then asset sales depress prices,... View Details
- June 2014
- Article
Frictions in Shadow Banking: Evidence from the Lending Behavior of Money Market Funds
By: Sergey Chernenko and Adi Sunderam
We document the consequences of money market fund risk taking during the European sovereign debt crisis. Using a novel data set of security-level holdings of prime money market funds, we show that funds with large exposures to risky Eurozone banks suffered significant... View Details
- Article
Contagion of Cooperation in Static and Fluid Social Networks
By: Jillian J. Jordan, David G. Rand, Samuel Arbesman, James H. Fowler and Nicholas A. Christakis
Cooperation is essential for successful human societies. Thus, understanding how cooperative and selfish behaviors spread from person to person is a topic of theoretical and practical importance. Previous laboratory experiments provide clear evidence of social... View Details
- September 2012 (Revised July 2013)
- Case
Can the Eurozone Survive?
By: Dante Roscini and Jonathan Schlefer
The sovereign debt crisis that took Greece by storm in 2010 began to spread to other European markets. Within a few months Ireland and Portugal had also lost access to the sovereign debt markets and had to rely on supranational loans for their financing. The risk of... View Details