Publications
Publications
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- All HBS Web
(1,930)
- Faculty Publications (282)
- 2023
- Article
Estimating Causal Peer Influence in Homophilous Social Networks by Inferring Latent Locations.
By: Edward McFowland III and Cosma Rohilla Shalizi
Social influence cannot be identified from purely observational data on social networks, because such influence is generically confounded with latent homophily, that is, with a node’s network partners being informative about the node’s attributes and therefore its... View Details
- April 2023
- Article
The Real Exchange Rate, Innovation and Productivity
By: Laura Alfaro, Alejandro Cuñat, Harald Fadinger and Yanping Liu
We evaluate manufacturing firms' responses to changes in the real exchange rate (RER) using detailed firm-level data for a large set of countries for the period 2001-2010. We uncover the following stylized facts about regional variation of manufacturing firms'... View Details
- March 2023 (Revised September 2023)
- Case
Patagonia: 'Earth Is Now Our Only Shareholder'
By: Brian Trelstad, Nien-hê Hsieh, Michael Norris and Susan Pinckney
In September 2022, Yvon Chouinard, the iconoclastic founder of outdoor apparel company Patagonia, announced a new ownership model for his company. Chouinard and his family had held complete control of the company's voting and non-voting stock since its founding 50... View Details
Keywords: Trusts; Business Ventures; Business Organization; Family Business; Restructuring; Change; Disruption; Transition; Decision Making; Ethics; Values and Beliefs; Finance; Financial Management; Governance; Corporate Governance; Investment Activism; Leadership; Labor; Law; Common Law; Management; Goals and Objectives; Organizations; Corporate Social Responsibility and Impact; Mission and Purpose; Organizational Change and Adaptation; Organizational Culture; Ownership; Ownership Type; Family Ownership; Private Ownership; Social Enterprise; Nonprofit Organizations; Society; Social Issues; Wealth and Poverty; Value; Value Creation; Apparel and Accessories Industry; United States
- January–February 2023
- Article
Forecasting COVID-19 and Analyzing the Effect of Government Interventions
By: Michael Lingzhi Li, Hamza Tazi Bouardi, Omar Skali Lami, Thomas Trikalinos, Nikolaos Trichakis and Dimitris Bertsimas
We developed DELPHI, a novel epidemiological model for predicting detected cases and deaths in the prevaccination era of the COVID-19 pandemic. The model allows for underdetection of infections and effects of government interventions. We have applied DELPHI across more... View Details
- January 2023 (Revised April 2024)
- Case
First to Fight? Culture, Tradition, and the United States Marine Corps (USMC)
By: Ranjay Gulati, Akhil Iyer and Joel Malkin
Over a history of more than 240 years, the United States Marine Corps has forged a distinct culture and institutional identity centered on its “warrior ethos.” In the wars of American history, Marines fought with uncommon valor, rising to international prominence for... View Details
- January–February 2023
- Article
Data-Driven COVID-19 Vaccine Development for Janssen
By: Dimitris Bertsimas, Michael Lingzhi Li, Xinggang Liu, Jennings Xu and Najat Khan
The COVID-19 pandemic has spurred extensive vaccine research worldwide. One crucial part of vaccine development is the phase III clinical trial that assesses the vaccine for safety and efficacy in the prevention of COVID-19. In this work, we enumerate the first... View Details
- September 2022
- Article
Experimentation and Start-up Performance: Evidence from A/B Testing
By: Rembrand Koning, Sharique Hasan and Aaron Chatterji
Recent scholarship has argued that experimentation should be the organizing principle for entrepreneurial strategy. Experimentation leads to organizational learning, which drives improvements in firm performance. We investigate this proposition by exploiting the... View Details
- 2022
- Working Paper
The Effect of Employee Lateness and Absenteeism on Store Performance
By: Caleb Kwon and Ananth Raman
We empirically analyze the effects of employee lateness and absenteeism on store performance by examining 25.5 million employee shift timecards covering more than 100,000 employees across more than 500 U.S. retail grocery store locations over a four year time period.... View Details
- July 2022
- Article
Countercyclical Prudential Buffers and Bank Risk-taking
By: Manuel Illueca, Lars Norden, Joseph Pacelli and Gregory F. Udell
We investigate the effects of countercyclical prudential buffers on bank risk-taking. We exploit the introduction of dynamic loan loss provisioning in Spain, mandating that banks use historical average loss rates in their estimation of loan loss provisions. We find... View Details
- June 2022
- Case
Business Implications from Regulating Carbon Emissions in the EU
By: George Serafeim and Benjamin Maletta
In the beginning of the 21st century, the European Union (the EU) had led the global fight against climate change with a wide array of policy measures. The EU’s primary approach to climate policy had been taxation via the European Union Emissions Trading System (EU... View Details
- May 2022
- Case
Rawbank's Illico Cash: Can 'Fast Money' Overcome Cash Dependency in the DRC?
By: Lauren Cohen and Grace Headinger
Thomas de Dreux-Brézé, the Head of Strategy and Project Management at Rawbank Congo in the Democratic Republic of the Congo (DRC), was perplexed as he reviewed annual adoption rates for the bank’s launch of Illico Cash 2.0. As the bank’s mobile money app, Illico Cash... View Details
Keywords: Fintech; Inflation; Deflation; Rural; Urban; Emerging Market; Mobile Technology; Finance; Money; Inflation and Deflation; Business Growth and Maturation; Decision Choices and Conditions; Demographics; Developing Countries and Economies; Corporate Entrepreneurship; Behavioral Finance; Currency; Banks and Banking; Commercial Banking; Financial Strategy; Rural Scope; Urban Scope; Innovation Strategy; Emerging Markets; Network Effects; Consumer Behavior; Mobile and Wireless Technology; Technology Adoption; Banking Industry; Financial Services Industry; Technology Industry; Congo, Democratic Republic of the
- May 2022
- Case
Timnit Gebru: 'SILENCED No More' on AI Bias and The Harms of Large Language Models
By: Tsedal Neeley and Stefani Ruper
Dr. Timnit Gebru—a leading artificial intelligence (AI) computer scientist and co-lead of Google’s Ethical AI team—was messaging with one of her colleagues when she saw the words: “Did you resign?? Megan sent an email saying that she accepted your resignation.” Heart... View Details
- 2022
- Working Paper
Distributional Consequences of Monetary Policy Across Races: Evidence from the U.S. Credit Register
By: Laura Alfaro, Ester Faia and Camelia Minoiu
We examine the consequences of monetary policy on racial disparities, focusing on the role of bank lending to firms through collateral and selection channels. Leveraging comprehensive loan-level data from the U.S. credit register (Y-14Q) of the Federal Reserve, we show... View Details
- Article
Policies to Influence Perceptions about COVID-19 Risk: The Case of Maps
By: Claudia Engel, Jonathan Rodden and Marco Tabellini
Choropleth disease maps have become an important tool for informing the public about the risks posed by COVID-19. In a survey conducted in the U.S. state of Georgia in June 2020, we randomly assigned respondents to view either of two maps. The first one reported... View Details
- March 2022
- Article
Where to Locate COVID-19 Mass Vaccination Facilities?
By: Dimitris Bertsimas, Vassilis Digalakis Jr, Alexander Jacquillat, Michael Lingzhi Li and Alessandro Previero
The outbreak of COVID-19 led to a record-breaking race to develop a vaccine. However, the limited vaccine capacity creates another massive challenge: how to distribute vaccines to mitigate the near-end impact of the pandemic? In the United States in particular, the new... View Details
- February 2022
- Article
Taxation and Innovation in the 20th Century
By: Ufuk Akcigit, John Grigsby, Tom Nicholas and Stefanie Stantcheva
This paper studies the effect of corporate and personal taxes on innovation in the United States over the twentieth century. We build a panel of the universe of inventors who patent since 1920, and a historical state-level corporate tax database with corporate tax... View Details
- January 2022
- Article
Global Behaviors, Perceptions, and the Emergence of Social Norms at the Onset of the COVID-19 Pandemic
By: Lukas Hensel, Marc Witte, Stefano Caria, Thiemo Fetzer, Stefano Fiorin, Friedrich M. Goetz, Margarita Gomez, Johannes Haushofer, Andriy Ivchenko, Gordon T. Kraft-Todd, Elena Reutskaja, Christopher Roth, Erez Yoeli and Jon M. Jachimowicz
We conducted a large-scale survey covering 58 countries and over 100,000 respondents between late March and early April 2020 to study beliefs and attitudes towards citizens' and governments' responses at the onset of the COVID-19 pandemic. Most respondents reported... View Details
- December 2021
- Article
Trade Policy Uncertainty and Stock Returns
By: Marcelo Bianconi, Federico Esposito and Marco Sammon
A recent literature has documented large real effects of trade policy uncertainty (TPU) on trade, employment, and investment, but there is little evidence that investors are compensated for bearing such risk. To quantify the risk premium associated with TPU, we exploit... View Details
- November 2021
- Article
A Salient Sugar Tax Decreases Sugary Drink Buying
By: Grant E. Donnelly, Paige Guge, Ryan Howell and Leslie John
Many governments have introduced sugary drink excise taxes to reduce purchasing and consumption of such drinks; however, they do not typically stipulate how such taxes should be communicated at point-of-purchase. Historical, field, and experimental data entailing over... View Details
Keywords: Decision-making; Open Data; Open Materials; Preregistered; Health; Policy; Taxation; Consumer Behavior; Decision Making
- 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