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- 2022
- Book
Legacy of Violence: A History of the British Empire
Sprawling across a quarter of the world’s land mass and claiming nearly seven hundred million people, Britain’s twentieth-century empire was the largest empire in human history. For many Britons, it epitomized their nation’s cultural superiority, but what legacy did... View Details
Keywords: Imperialism; Violence; Colonialism; History; Government and Politics; Power and Influence; Race; Policy; United Kingdom
- March 2022
- Article
Loan Types and the Bank Lending Channel
By: Victoria Ivashina, Luc Laeven and Enrique Moral-Benito
Using credit-registry data for Spain and Peru, we document that four main types of commercial credit—asset-based loans, cash flow loans, trade finance and leasing—are easily identifiable and represent the bulk of corporate credit. We show that credit growth dynamics... 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
- February 2022
- Case
CityScore: Big Data Comes to Boston
By: Boris Groysberg and Sarah L. Abbott
In 2016, Martin “Marty” Walsh, the Mayor of Boston, introduced CityScore, a data dashboard that measured the city’s progress across a range of metrics. The dashboard was updated daily and publicly available. The mayor frequently discussed the CityScore targets in... View Details
- February 18, 2022
- Article
Transparency as a Solution for COVID-19 Related Hospital Capacity Issues
By: Regina E. Herzlinger and Richard Boxer
In the initial phases of the COVID-19 pandemic, many U.S. hospitals could not provide an adequate supply of beds to meet demand. Solving the problem of hospital bed capacity is of great importance in the “new normal,” which requires recognizing that SARS-CoV-2 is but... View Details
Keywords: COVID; COVID-19 Pandemic; Health Care; Health Care Demand; Health Care Delivery; Health Care Industry; Health Care Operations; Health Care Policy; Transparency; Hospital; Hospital Management; Hospitals; Health Pandemics; Health Care and Treatment; Service Delivery; Operations; Performance Capacity; Policy; Health Industry
- February 2022 (Revised April 2022)
- Case
BUA Group
By: John D. Macomber, Pippa Tubman Armerding and Wale Lawal
BUA Group must decide between investments in cement, road building, power generation, or sugar. Private businesses are important to economic development in Africa. Students must assess the competitive nature of each of these industries, the magnitude of capital... View Details
- Article
A 680,000-Person Megastudy of Nudges to Encourage Vaccination in Pharmacies
By: Katherine L. Milkman, Linnea Gandhi, Mitesh S. Patel, Heather N. Graci, Dena M. Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Jake Rothschild, Jonathan E. Bogard, Ilana Brody, Christopher F. Chabris, Edward Chang, Gretchen B. Chapman, Jennifer E. Dannals, Noah J. Goldstein, Amir Goren, Hal Hershfield, Alex Hirsch, Jillian Hmurovic, Samantha Horn, Dean Karlan, Ariella S. Kristal, Cait Lamberton, Michael N. Meyer, Allison H. Oakes, Maurice E. Schweitzer, Maheen Shermohammed, Jaochim H. Talloen, Caleb Warren, Ashley V. Whillans, Kuldeep N. Yadav, Julian J. Zlatev, Ron Berman, Chalanda N. Evans, Rahul Ladhania, Jens Ludwig, Nina Mazar, Sendhil Mullainathan, Christopher K. Snider, Jann Spiess, Eli Tsukayama, Lyle Ungar, Christophe Van den Bulte, Kevin G. Volpp and Angela L. Duckworth
Encouraging vaccination is a pressing policy problem. To assess whether text-based reminders can encourage pharmacy vaccination and what kinds of messages work best, we conducted a megastudy. We randomly assigned 689,693 Walmart pharmacy patients to receive one of 22... View Details
- 2022
- Working Paper
Electoral Turnovers
By: Benjamin Marx, Vincent Pons and Vincent Rollet
In most national elections, voters face a key choice between continuity and change. Electoral turnovers occur when the incumbent candidate or party fails to win reelection. To understand how turnovers affect national outcomes, we study the universe of presidential and... View Details
- February 2022 (Revised March 2022)
- Case
MicroStrategy's Investment in Bitcoin
By: C. Fritz Foley
At the end of the second quarter of 2020, MicroStrategy, a Virginia based provider of analytics software and services, announced plans to acquire and hold bitcoin as a part of the firm’s treasury reserve policy and corporate strategy. Within a year, the firm purchased... View Details
- February 2022
- Article
Sugar-sweetened Beverage Purchases and Intake at Event Arenas with and without a Portion Size Cap
By: Sheri Volger, James Scott Parrott, Brian Elbel, Leslie K. John, Jason P. Block, Pamela Rothpletz-Puglia and Christina A. Roberto
This is the first real-world study to examine the association between a voluntary 16-ounce (oz.) portion-size cap on sugar-sweetened beverages (SSB) at a sporting arena on volume of SSBs and food calories purchased and consumed during basketball games. Cross-sectional... View Details
- 2024
- Working Paper
What Triggers National Stock Market Jumps?
By: Scott R. Baker, Nicholas Bloom, Steven J. Davis and Marco Sammon
We examine newspapers the day after major stock-market jumps to evaluate the proximate cause, geographic source, and clarity of these events from 1900 in the US, 1930 in the UK and 1980 in 12 other countries. We find four main results. First, the United States plays an... View Details
- January 2022 (Revised February 2022)
- Case
Envision Group
By: Gunnar Trumbull, Bonnie Yining Cao and Dawn H. Lau
Based in China, Envision was one of the world’s leading Greentech companies. Chief Executive Officer Lei Zhang had set the goal of achieving carbon neutrality across the company’s global operations and supply chain by 2022 and 2028 respectively. As part of its... View Details
Keywords: Green Technology; Climate Change; Emerging Markets; Information Technology; Strategy; Management; Renewable Energy; Energy Policy; Environmental Sustainability; Manufacturing Industry; Auto Industry; Green Technology Industry; Battery Industry; China; United States; Japan; United Kingdom; France
- January 2022 (Revised March 2022)
- Case
Chinese Restriction, Violence, and Exclusion in the United States
By: Tom Nicholas, Boyang Han and Tomas Rosales
Many early Chinese immigrants to the United States during the 1850s worked as traditional gold miners, but as gold mining declined in significance, an increasing number were employed as laborers for large scale construction projects such as railroads, roadways, and in... View Details
Keywords: Immigration Acts; Immigration; Labor; Jobs and Positions; Race; Social Issues; Laws and Statutes
- January 2022
- Background Note
The Florange Law: Encouraging Long-Termism in Equity Markets?
By: Charles C.Y. Wang and Tonia Labruyere
This note provides background information on a French law (“the Florange law”) passed in 2014 that the French government said would encourage long-term shareholdings. The note describes the law, what led to it, the reactions it evoked, and similar initiatives in other... View Details
- January 2022 (Revised November 2023)
- Supplement
Uber in China (C): The Cost of Success for Didi
By: William C. Kirby and Noah B. Truwit
On June 30, 2021, ride-hailing giant Didi Chuxing (Didi) raised $4.4 billion in its initial public offering (IPO) on the New York Stock Exchange (NYSE), the largest IPO of a Chinese company listed on an American exchange since Alibaba raised $25 billion in 2014.... View Details
- January 2022
- Teaching Plan
Just Arrived: Integrating Refugees in Sweden
By: Brian Trelstad and Emilie Billaud
Teaching Plan for HBS Case No. 321-040. Just Arrived is an online platform that matches newly-arrived immigrants in Sweden with employment opportunities. As one of several for-profit and non-profit start-ups in Europe that is looking to address the refugee crisis, the... 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
- 2022
- Book
Ripe for Revolution: Building Socialism in the Third World
By: Jeremy Friedman
A historical account of ideology in the Global South as the postwar laboratory of socialism, its legacy following the Cold War, and the continuing influence of socialist ideas worldwide.
In the first decades after World War II, many newly independent... View Details
In the first decades after World War II, many newly independent... View Details
- Article
Megastudies Improve the Impact of Applied Behavioural Science
By: Katherine L. Milkman, Dena Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Pepi Pandiloski, Yeji Park, Aneesh Rai, Max Bazerman, John Beshears, Lauri Bonacorsi, Colin Camerer, Edward Chang, Gretchen Chapman, Robert Cialdini, Hengchen Dai, Lauren Eskreis-Winkler, Ayelet Fishbach, James J. Gross, Samantha Horn, Alexa Hubbard, Steven J. Jones, Dean Karlan, Tim Kautz, Erika Kirgios, Joowon Klusowski, Ariella Kristal, Rahul Ladhania, Jens Ludwig, George Loewenstein, Barbara Mellers, Sendhil Mullainathan, Silvia Saccardo, Jann Spiess, Gaurav Suri, Joachim H. Talloen, Jamie Taxer, Yaacov Trope, Lyle Ungar, Kevin G. Volpp, Ashley V. Whillans, Jonathan Zinman and Angela L. Duckworth
Policy-makers are increasingly turning to behavioural science for insights about how to improve citizens’ decisions and outcomes. Typically, different scientists test different intervention ideas in different samples using different outcomes over different time... View Details
- Article
A Prescriptive Analytics Framework for Optimal Policy Deployment Using Heterogeneous Treatment Effects
By: Edward McFowland III, Sandeep Gangarapu, Ravi Bapna and Tianshu Sun
We define a prescriptive analytics framework that addresses the needs of a constrained decision-maker facing, ex ante, unknown costs and benefits of multiple policy levers. The framework is general in nature and can be deployed in any utility maximizing context, public... View Details