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- March 2023
- Technical Note
The Traits of Entrepreneurs
By: Jo Tango and Alys Ferragamo
Entrepreneurship has the potential for extreme success but also comes with high risks. Given this risk-reward profile, we might wonder why individuals choose to become entrepreneurs. Are there personality traits that lead someone to become an entrepreneur? Can you...
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- 2023
- Working Paper
Complexity and Time
By: Benjamin Enke, Thomas Graeber and Ryan Oprea
We provide experimental evidence that core intertemporal choice anomalies -- including extreme short-run impatience, structural estimates of present bias, hyperbolicity and transitivity violations -- are driven by complexity rather than time or risk preferences. First,...
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Enke, Benjamin, Thomas Graeber, and Ryan Oprea. "Complexity and Time." NBER Working Paper Series, No. 31047, March 2023.
- February 2023
- Article
Homophily and Acrophily as Drivers of Political Segregation
By: Amit Goldenberg, Joseph M. Abruzzo, Zi Huang, Jonas Schone, David Bailey, Robb Willer, Eran Halperin and James J. Gross
Political segregation is an important social problem, increasing polarization and impeding effective governance. Previous work has viewed the central driver of segregation to be political homophily, the tendency to associate with others who have similar views. Here we...
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Keywords:
Political Affiliation;
Extremism;
Values and Beliefs;
Identity;
Groups and Teams;
Emotions;
Civil Society or Community
Goldenberg, Amit, Joseph M. Abruzzo, Zi Huang, Jonas Schone, David Bailey, Robb Willer, Eran Halperin, and James J. Gross. "Homophily and Acrophily as Drivers of Political Segregation." Nature Human Behaviour 7, no. 2 (February 2023): 219–230.
- 2022
- Working Paper
Overreaction and Diagnostic Expectations in Macroeconomics
By: Pedro Bordalo, Nicola Gennaioli and Andrei Shleifer
We present the case for the centrality of overreaction in expectations for addressing important challenges in finance and macroeconomics. First, non-rational expectations by market participants can be measured and modeled in ways that address some of the key challenges...
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Keywords:
Overreaction;
Rational Expectations;
Macroeconomics;
Market Participation;
Social Psychology
Bordalo, Pedro, Nicola Gennaioli, and Andrei Shleifer. "Overreaction and Diagnostic Expectations in Macroeconomics." NBER Working Paper Series, No. 30356, August 2022.
- July 2022
- Case
3G Capital
By: Jo Tango and Alys Ferragamo
In June 2022, 3G Capital Co-Managing Partners Alex Behring and Daniel Schwartz were in a partners’ meeting. On the agenda were three potential investments. Code named “Alpha,” “Beta,” and “Charlie,” they were the finalists amongst hundreds that the team had screened....
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Keywords:
Investment Decisions;
Investment Funds;
Investment Portfolio;
Decision Choices and Conditions;
Private Equity
Tango, Jo, and Alys Ferragamo. "3G Capital." Harvard Business School Case 823-010, July 2022.
- 2022
- Chapter
When Fifth Columns Fall: Religious Groups and Loyalty-Signaling in Erdoğan's Turkey
By: Kristin Fabbe and Efe Murat Balıkçıoğlu
This chapter investigates the role that fifth-column claims play in authoritarian politics. Specifically, it examines how fifth-column claims against the Gülen Movement have transformed the relationship between the Turkish state and both official (state-sanctioned)...
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Keywords:
Fifth Columns;
Gülen Movement;
Political Islam;
Government and Politics;
Religion;
Turkey
Fabbe, Kristin, and Efe Murat Balıkçıoğlu. "When Fifth Columns Fall: Religious Groups and Loyalty-Signaling in Erdoğan's Turkey." Chap. 10 in Enemies Within: The Global Politics of Fifth Columns, edited by Harris Mylonas and Scott Radnitz, 248–270. New York: Oxford University Press, 2022.
- 2022
- Working Paper
Small Campaign Donors
By: Laurent Bouton, Julia Cagé, Edgard Dewitte and Vincent Pons
In this paper, we study the characteristics and behavior of small donors, and compare them to those of large donors. We first build a novel dataset including all the 340 million individual contributions reported to the U.S. Federal Election Commission between 2005 and...
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Keywords:
Campaign Finance;
Campaign Contributions;
Small Donations;
ActBlue;
WinRed;
TV Advertising;
Political Elections;
Finance;
Demographics;
Advertising;
Analysis;
Analytics and Data Science
Bouton, Laurent, Julia Cagé, Edgard Dewitte, and Vincent Pons. "Small Campaign Donors." NBER Working Paper Series, No. 30050, May 2022.
- 2022
- Working Paper
Uniform Rate Setting and the Deposit Channel
By: Juliane Begenau and Erik Stafford
Banks do not completely pass-through changes in short-term market rates to depositors. The deposit channel of monetary policy proposes that banks choose the rate of pass-through across their branches based on local deposit market concentration, which consequently...
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Begenau, Juliane, and Erik Stafford. "Uniform Rate Setting and the Deposit Channel." Working Paper, May 2022.
- April 6, 2022
- Article
In Uncertain Times, Big Companies Need to Take Care of Their Suppliers
By: Willy C. Shih
Many large original equipment manufacturers (OEMs) have long been ruthless with their suppliers, demanding extremely low prices and loading them up with risks. Given that the current turmoil buffeting global supply chains is unlikely to end anytime soon, OEMs should...
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Keywords:
Supplier Relationship;
Supply Chain Management;
Supply Chain;
Relationships;
Risk and Uncertainty;
Auto Industry;
Industrial Products Industry;
Manufacturing Industry;
United States
Shih, Willy C. "In Uncertain Times, Big Companies Need to Take Care of Their Suppliers." Harvard Business Review Digital Articles (April 6, 2022).
- February 2022 (Revised September 2022)
- Case
InstaDeep: AI Innovation Born in Africa (A)
By: Shikhar Ghosh and Esel Çekin
Karim Beguir and Zohra Slim were the co-founders of InstaDeep, a deep tech startup focusing on artificial intelligence (AI) solutions. Instadeep was one of the few companies globally that were partnering with DeepMind, an AI subsidiary of Google [Alphabet Inc.]....
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Keywords:
AI;
Artificial Intelligence;
Entrepreneurship;
Operations;
Business Subsidiaries;
Brands and Branding;
Innovation and Invention;
Growth and Development Strategy;
AI and Machine Learning;
Technology Industry;
Africa
Ghosh, Shikhar, and Esel Çekin. "InstaDeep: AI Innovation Born in Africa (A)." Harvard Business School Case 822-104, February 2022. (Revised September 2022.)
- February 2022 (Revised July 2022)
- Supplement
InstaDeep: AI Innovation Born in Africa (B)
By: Shikhar Ghosh and Esel Çekin
Karim Beguir and Zohra Slim were the co-founders of InstaDeep, a deep tech startup focusing on artificial intelligence (AI) solutions. Instadeep was one of the few companies globally that were partnering with DeepMind, an AI subsidiary of Google [Alphabet Inc.]....
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Keywords:
AI;
Artificial Intelligence;
Entrepreneurship;
Operations;
Business Subsidiaries;
Brands and Branding;
Innovation and Invention;
Growth and Development Strategy;
AI and Machine Learning;
Technology Industry;
Africa
Ghosh, Shikhar, and Esel Çekin. "InstaDeep: AI Innovation Born in Africa (B)." Harvard Business School Supplement 822-105, February 2022. (Revised July 2022.)
- 2022
- Working Paper
Calling All Issuers: The Market for Debt Monitoring
By: Huaizhi Chen, Lauren Cohen and Weiling Liu
A substantial fraction of local governments refinance their long-term debt with significant delays—resulting in sizable losses. Using data from 2001 to 2018, we estimate that U.S. municipals lost over $31 billion from this delayed refinancing, whereas the entire U.S....
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Keywords:
Debt Monitoring;
Financial Institutions;
Governing Rules, Regulations, and Reforms;
Government Administration;
Financing and Loans
Chen, Huaizhi, Lauren Cohen, and Weiling Liu. "Calling All Issuers: The Market for Debt Monitoring." NBER Working Paper Series, No. 29790, February 2022.
- Article
Adaptive Machine Unlearning
By: Varun Gupta, Christopher Jung, Seth Neel, Aaron Roth, Saeed Sharifi-Malvajerdi and Chris Waites
Data deletion algorithms aim to remove the influence of deleted data points from trained models at a cheaper computational cost than fully retraining those models. However, for sequences of deletions, most prior work in the non-convex setting gives valid guarantees...
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Gupta, Varun, Christopher Jung, Seth Neel, Aaron Roth, Saeed Sharifi-Malvajerdi, and Chris Waites. "Adaptive Machine Unlearning." Advances in Neural Information Processing Systems (NeurIPS) 34 (2021).
- November 2021 (Revised January 2023)
- Case
The Global Great Depression, 1929-1939
By: Alberto Cavallo, Sophus A. Reinert and Federica Gabrieli
The Great Depression was, by far, the worst economic contraction of the twentieth century, and some of the most important ideas about both fiscal and monetary policy in the second half of the century were developed in response to it. The economic collapse, which...
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Keywords:
Great Depression;
Economic Conditions;
Unemployment;
Homelessness;
Financial Crisis;
History;
Economy;
Policy;
Poverty;
Social Issues;
Economic Slowdown and Stagnation
Cavallo, Alberto, Sophus A. Reinert, and Federica Gabrieli. "The Global Great Depression, 1929-1939." Harvard Business School Case 722-034, November 2021. (Revised January 2023.)
- October 2021
- Case
(180) Days of Quibi
By: David J. Collis and Terrence Shu
Mobile streaming app Quibi was ready to take the entertainment world by storm at its April 2020 launch. Backed by $1.75 billion, influential investors from Hollywood to Wall Street eagerly anticipated early success for this brainchild of Meg Whitman, former CEO of...
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Collis, David J., and Terrence Shu. "(180) Days of Quibi." Harvard Business School Case 722-377, October 2021.
- October 2021 (Revised November 2022)
- Case
The 2012 Spanish Labor Reform: Lifting All Boats, or Leveling Down?
By: Vincent Pons, Rafael Di Tella, Santiago Botella and Elena Corsi
Since 1978, Spain had struggled to control unemployment. The country’s labor law was protective of employees hired long-term and companies used temporary contracts as buffers. In 2012, amid economic recession and a 23.6% unemployment rate, a center-right government of...
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Keywords:
COVID-19 Pandemic;
Labor Market;
Unemployment;
Recession;
Globalized Markets and Industries;
Government Legislation;
International Relations;
Working Conditions;
Employment;
Labor Unions;
Contracts;
Social Issues;
Public Opinion;
Governing Rules, Regulations, and Reforms;
Spain;
European Union
Pons, Vincent, Rafael Di Tella, Santiago Botella, and Elena Corsi. "The 2012 Spanish Labor Reform: Lifting All Boats, or Leveling Down?" Harvard Business School Case 722-008, October 2021. (Revised November 2022.)
- September 13, 2021
- Article
Managing Through Crunch Time—Without Burning Out Your Team
By: Flavio Serapiao, Andrew Hill and Boris Groysberg
Crunch times—the long, stressful hours of work that are often required in the final weeks before a new product launch—can have an inordinate impact on the success of businesses and they’re powerful shapers of organizational culture. Effective leaders understand that...
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Serapiao, Flavio, Andrew Hill, and Boris Groysberg. "Managing Through Crunch Time—Without Burning Out Your Team." Harvard Business Review Digital Articles (September 13, 2021).
- 2021
- Working Paper
Multi-location Workers in Multinational Firms? Tradeoffs in Contextual Specialization of Employees and Organizational Outcomes
We study how “contextual specialization,” the act of focusing workers’ organizational tasks within a particular locational context, and “contextual non-specialization,” the practice of diversifying workers’ organizational tasks among multiple locational contexts,...
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Keywords:
Talent and Talent Management;
Performance;
Experience and Expertise;
Selection and Staffing;
Strength and Weakness;
Personal Development and Career
Gibson, Hise O., Ryan W. Buell, and Prithwiraj Choudhury. "Multi-location Workers in Multinational Firms? Tradeoffs in Contextual Specialization of Employees and Organizational Outcomes." Harvard Business School Working Paper, No. 22-007, August 2021.
- July 2021 (Revised December 2021)
- Case
Pershing Square's Pandemic Trade (A)
By: Emil N. Siriwardane, Luis M. Viceira, Dean Xu and Lucas Baker
This case explores the decision that Bill Ackman, CEO and founder of the hedge fund Pershing Square Capital, was considering in late February 2020 about hedging the exposure of the fund’s portfolio from the potential financial fallout ensuing from an extreme event like...
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Keywords:
Health Pandemics;
Financial Liquidity;
Cost Management;
Decision Choices and Conditions;
Risk Management
Siriwardane, Emil N., Luis M. Viceira, Dean Xu, and Lucas Baker. "Pershing Square's Pandemic Trade (A)." Harvard Business School Case 222-007, July 2021. (Revised December 2021.)
- July 2021 (Revised September 2021)
- Case
Sarah Robb O'Hagan: The Rocky Road of Passion
By: Jon M. Jachimowicz and Francesca Gino
In November 2018, Sarah Robb O’Hagan is reeling from an unceremonious exit as CEO of Flywheel, a chain of indoor cycling studios. In the past, Robb O’Hagan had led transformational change across companies throughout the sports and fitness industry, including as...
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Keywords:
Personal Development and Career;
Satisfaction;
Decision Making;
Problems and Challenges;
Opportunities;
Interests
Jachimowicz, Jon M., and Francesca Gino. "Sarah Robb O'Hagan: The Rocky Road of Passion." Harvard Business School Case 422-055, July 2021. (Revised September 2021.)