Publications
Publications
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- All HBS Web
(664)
- Faculty Publications (87)
- January 2021 (Revised July 2022)
- Case
Snapp: Scaling Under Sanctions in Iran (A)
By: Meg Rithmire and Gamze Yucaoglu
The case opens in November 2019 as Eyad Alkassar and Mahmoud Fouz, co-founders of Iran’s first and leading ride-hailing platform, Snapp, find out about Apple’s and Google’s decisions to remove all Iranian apps from their respective application stores.
The case... View Details
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- 2020
- Working Paper
Design and Analysis of Switchback Experiments
By: Iavor I Bojinov, David Simchi-Levi and Jinglong Zhao
In switchback experiments, a firm sequentially exposes an experimental unit to a random treatment, measures its response, and repeats the procedure for several periods to determine which treatment leads to the best outcome. Although practitioners have widely adopted... View Details
- August 2020
- Article
Leverage and the Beta Anomaly
By: Malcolm Baker, Mathias F. Hoeyer and Jeffrey Wurgler
The well-known weak empirical relationship between beta risk and the cost of equity—the beta anomaly—generates a simple tradeoff theory: As firms lever up, the overall cost of capital falls as leverage increases equity beta, but as debt becomes riskier the marginal... View Details
- July 2020
- Case
Michael Solomonov: Jerusalem in a Bowl
By: Boris Groysberg, Evan M.S. Hecht and Katherine Connolly Baden
Before the COVID-19 pandemic hit, Michael Solomonov and Steven Cook had begun to wonder whether it might be time to rethink their opportunistic approach to the expansion of their small restaurant empire in Philadelphia, CooknSolo. The pandemic, however, caused an... View Details
Keywords: Restaurant Industry; Entrepreneur; COVID-19; Crisis; Crisis Response Plans; Entrepreneurship; Food; Health Pandemics; Crisis Management; Innovation and Invention; Leadership; Creativity; Strategy; Ownership; Problems and Challenges; Risk and Uncertainty; Situation or Environment; Food and Beverage Industry; United States
- June 2020
- Article
How Scheduling Can Bias Quality Assessment: Evidence from Food Safety Inspections
By: Maria Ibanez and Michael W. Toffel
Accuracy and consistency are critical for inspections to be an effective, fair, and useful tool for assessing risks, quality, and suppliers—and for making decisions based on those assessments. We examine how inspector schedules could introduce bias that erodes... View Details
- May 2020
- Article
Measuring Collaboration in Modern Organizations
By: Stephen Michael Impink, Andrea Prat and Raffaella Sadun
Internal communication has been a central theme in organizational economics, as employee collaboration provides insight into the structure of firms. Use of electronic communications data can be transformational for organizational economics, as these data provide a... View Details
- December 2019
- Article
Costly Concessions: An Empirical Framework for Matching with Imperfectly Transferable Utility
By: Alfred Galichon, Scott Duke Kominers and Simon Weber
We introduce an empirical framework for models of matching with imperfectly transferable utility and unobserved heterogeneity in tastes. Our framework allows us to characterize matching equilibrium in a flexible way that includes as special cases the classic fully- and... View Details
- October 2019 (Revised April 2020)
- Background Note
Note on Funding Deep Tech Startups
By: Karim Lakhani, Peter Barrett and Noubar Afeyan
This Background Note provides essential information on funding deep technologies—those technologies that were inherently capital intensive, time consuming, risky, and potentially disruptive. Both dilutive and non-dilutive sources of investment are highlighted, along... View Details
Keywords: Entrepreneurship; Energy; Venture Capital; Corporate Finance; Initial Public Offering; Investment; Health Testing and Trials; Innovation and Invention; Technological Innovation; Intellectual Property; Product Design; Product Development; Information Technology; Research and Development; Risk and Uncertainty; Technology Industry; Biotechnology Industry; United States; North America; Europe; Asia
- 2019
- Working Paper
The Impact of Professionals' Contributions to Online Knowledge Communities on Their Workplace Knowledge Work
By: Hila Lifshitz - Assaf and Frank Nagle
Knowledge work is becoming increasingly challenging as pace of change in the knowledge frontier is increasing. Organizations have created multiple mechanisms to minimize knowledge gaps and increase learning such internal training, mentorship programs as well as... View Details
- 2019
- Working Paper
Bank Boards: What Has Changed Since the Financial Crisis?
By: Shiva Rajgopal, Suraj Srinivasan and Forester Wong
Several government-mandated committees investigating the financial crisis highlighted four key deficiencies in the composition of bank boards before the crisis: (i) group think among bank board members; (ii) absence of prior banking experience of board members; (iii)... View Details
- Article
Accuracy First: Selecting a Differential Privacy Level for Accuracy-Constrained ERM
By: Katrina Ligett, Seth Neel, Aaron Leon Roth, Bo Waggoner and Steven Wu
Traditional approaches to differential privacy assume a fixed privacy requirement ϵ for a computation, and attempt to maximize the accuracy of the computation subject to the privacy constraint. As differential privacy is increasingly deployed in practical settings, it... View Details
- 2018
- Book
Varieties of Green Business: Industries, Nations and Time
By: Geoffrey Jones
Published at a time of ever-increasing warnings that the pace of climate change and other environmental changes risk making the Earth unsustainable within our own lifetimes, this book looks at the past of green business to identify lessons for the future. It provides... View Details
Keywords: Green Business; Sustainability; Business History; Eco-tourism; Organic Wine; Organic Food; Waste Management; Sustainable Finance; Ethics; Finance; History; Entrepreneurship; Accommodations Industry; Agriculture and Agribusiness Industry; Banking Industry; Energy Industry; Food and Beverage Industry; Green Technology Industry; Tourism Industry; Europe; Asia; Latin America; North and Central America; New Zealand
- July 2018 (Revised August 2018)
- Case
Project Helios: Harvesting the Sun
By: Mark Egan and E. Scott Mayfield
Aware of the impact that modern society was having on the environment, Ashley Telkes had always tried to be cognizant of her own impact on the environment and to take reasonable steps to mitigate her own effects. Having already implemented a number of passive measures... View Details
- February 2018
- Article
Retention Futility: Targeting High-Risk Customers Might Be Ineffective.
By: Eva Ascarza
Companies in a variety of sectors are increasingly managing customer churn proactively, generally by detecting customers at the highest risk of churning and targeting retention efforts towards them. While there is a vast literature on developing churn prediction models... View Details
- January–February 2018
- Article
Some Customers Would Rather Leave Without Saying Goodbye
By: Eva Ascarza, Oded Netzer and Bruce G.S. Hardie
We investigate the increasingly common business setting in which companies face the possibility of both observed and unobserved customer attrition (i.e., “overt” and “silent” churn) in the same pool of customers. This is the case for many online-based services where... View Details
- 2018
- Working Paper
How Scheduling Can Bias Quality Assessment: Evidence from Food Safety Inspections
By: Maria Ibanez and Michael W. Toffel
Many production processes are subject to inspection to ensure they meet quality, safety, and environmental standards imposed by companies and regulators. Inspection accuracy is critical to inspections being a useful input to assessing risks, allocating quality... View Details
- 2018
- Working Paper
Global Portfolio Diversification for Long-Horizon Investors
By: Luis M. Viceira and Zixuan (Kevin) Wang
This paper conducts a theoretical and empirical investigation of global portfolio diversification for long-horizon investors in the presence of permanent cash flow shocks and transitory discount rate shocks to asset prices and returns. An increase in the cross-country... View Details
- 2016
- Chapter
Forward Guidance in the Yield Curve: Short Rates versus Bond Supply
By: Robin Greenwood, Samuel Gregory Hanson and Dimitri Vayanos
We present a model of the yield curve in which the central bank can provide market participants with forward guidance on both future short rates and on future Quantitative Easing (QE) operations, which affect bond supply. Forward guidance on short rates works through... View Details
- November–December 2016
- Article
The Impact of Patent Wars on Firm Strategy: Evidence from the Global Smartphone Industry
By: Yongwook Paik and Feng Zhu
Strategy scholars have documented in various empirical settings that firms seek and leverage stronger institutions to mitigate hazards and gain competitive advantage. In this paper, we argue that such “institution-seeking” behavior may not be confined to the pursuit of... View Details
- August 2, 2016
- Article
Uncalculating Cooperation Is Used to Signal Trustworthiness
By: Jillian J. Jordan, Moshe Hoffman, Martin A. Nowak and David G. Rand
Humans frequently cooperate without carefully weighing the costs and benefits. As a result, people may wind up cooperating when it is not worthwhile to do so. Why risk making costly mistakes? Here, we present experimental evidence that reputation concerns provide an... View Details