Publications
Publications
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- All HBS Web
(2,143)
- Faculty Publications (572)
- August 2021
- Article
Multiple Imputation Using Gaussian Copulas
By: F.M. Hollenbach, I. Bojinov, S. Minhas, N.W. Metternich, M.D. Ward and A. Volfovsky
Missing observations are pervasive throughout empirical research, especially in the social sciences. Despite multiple approaches to dealing adequately with missing data, many scholars still fail to address this vital issue. In this paper, we present a simple-to-use... View Details
- June 2021
- Case
Modern Endowment Management: Paula Volent and the Bowdoin Endowment
By: Luis M. Viceira, Emily R. McComb and Dean Xu
This case examines modern endowment investment management through the lens of a leadership transition between Chief Investment Officers (CIOs). In March 2021, Paula Volent is about to step down as the CIO of the endowment of Bowdoin College after twenty-one years, and... View Details
- June 2021 (Revised October 2021)
- Case
Nissan's Response to the COVID-19 Pandemic
By: Ananth Raman, William Schmidt and Ann Winslow
In January 2020, Ashwani Gupta took over as COO at Nissan Motor Corporation, and several weeks later, the COVID-19 pandemic began. Nissan’s Business Continuity Plan (BCP) had been key to the resilience of Nissan’s supply chain. It had enabled Nissan to recover from... View Details
- June 15, 2021
- Article
Cutting the Gordian Knot of Employee Health Care Benefits and Costs: A Corporate Model Built on Employee Choice
By: Regina E. Herzlinger and Barak D. Richman
President Joe Biden’s promise to give every American access to affordable health insurance is well-intentioned, but his plan’s policy elements—a public option, a permanent expanded tax credit—require congressional approval and would expend significant political and... View Details
- 2021
- Article
Designing, Not Checking, for Policy Robustness: An Example with Optimal Taxation
By: Benjamin B. Lockwood, Afras Sial and Matthew C. Weinzierl
Economists typically check the robustness of their results by comparing them across plausible ranges of parameter values and model structures. A preferable approach to robustness—for the purposes of policymaking and evaluation—is to design policy that takes these... View Details
- Article
'Many Others Are Doing It, So Why Shouldn't I?': How Being in Larger Competitions Leads to More Cheating
By: Celia Chui, Maryam Kouchaki and Francesca Gino
In many spheres of life, from applying for a job to participating in an athletic contest to vying for a date, we face competition. Does the size of the competition pool affect our propensity to behave unethically in our pursuit of the prize? We propose that it does.... View Details
Keywords: Unethical Behavior; Cheating; Competitors; Social Norms; Ethics; Behavior; Competition; Societal Protocols
- Article
Does Observability Amplify Sensitivity to Moral Frames? Evaluating a Reputation-Based Account of Moral Preferences
By: Valerio Capraro, Jillian J. Jordan and Ben Tappin
A growing body of work suggests that people are sensitive to moral framing in economic games involving prosociality, suggesting that people hold moral preferences for doing the “right thing”. What gives rise to these preferences? Here, we evaluate the explanatory power... View Details
- 2021
- Working Paper
Going by the Book: Valuation Ratios and Stock Returns
By: Ki-Soon Choi, Eric So and Charles C.Y. Wang
We study the use of firms’ book-to-market ratios (B/M) in value investing and its implications for comovements in firms’ stock returns and trading volumes. We show B/M has become increasingly detached from common alternative valuation ratios over time while also... View Details
- May 2021
- Article
Preparing for a Pandemic: Accelerating Vaccine Availability
By: Amrita Ahuja, Susan Athey, Arthur Baker, Eric Budish, Juan Camilo Castillo, Rachel Glennerster, Scott Duke Kominers, Michael Kremer, Jean Lee, Canice Prendergast, Christopher M. Snyder, Alex Tabarrok, Brandon Joel Tan and Witold Wiecek
Vaccinating the world’s population quickly in a pandemic has enormous health and economic benefits. We analyze the problem faced by governments in determining the scale and structure of procurement for vaccines. We analyze alternative approaches to procurement, arguing... View Details
- May 2021
- Article
The Firm Next Door: Using Satellite Images to Study Local Information Advantage
By: Jung Koo Kang, Lorien Stice-Lawrence and Forester Wong
We use novel satellite data that track the number of cars in the parking lots of 92,668 stores for 71 publicly listed U.S. retailers to study the local information advantage of institutional investors. We establish car counts as a timely measure of store-level... View Details
- April 2021
- Case
Etsy: Crafting a Turnaround to Save the Business and Its Soul
By: Ranjay Gulati, Luciana Silvestri and Monte Burke
Etsy, the online seller of handmade goods, was founded in 2005 on an almost utopian ideal—a responsible, caring company that offered individual crafters a place to sell their wares, a wholesome alternative to companies that sold mass-manufactured products. The company... View Details
- April 2021 (Revised March 2024)
- Case
Social Media War 2021: Snap vs. Facebook vs. TikTok
By: David B. Yoffie and Daniel Fisher
This case explores the competitive war between Snap, Facebook, and TikTok in 2021. The strategic focus is on Snapchat: how should it respond to the emergence of TikTok, and how should it compete with the dominant competitor in its space—Facebook. The case examines... View Details
- April 2021
- Article
Evaluating Firm-Level Expected-Return Proxies: Implications for Estimating Treatment Effects
By: Charles M.C. Lee, Eric C. So and Charles C.Y. Wang
We introduce a parsimonious framework for choosing among alternative expected-return proxies (ERPs) when estimating treatment effects. By comparing ERPs’ measurement-error variances in the cross section and in time series, we provide new evidence on the relative... View Details
- April–May 2021
- Article
The Influence of Loan Officers on Loan Contract Design and Performance
By: Robert Bushman, Janet Gao, Xiumin Martin and Joseph Pacelli
We investigate the extent to which loan officers generate independent, individual effects on the design and performance of syndicated loans. We construct a large database containing the identities of loan officers involved in structuring syndicated loan deals, allowing... View Details
- 2021
- Comment
Willpower Is a Form of, but Not Synonymous with, Self-control
By: Ariella S. Kristal and Julian Zlatev
We build on Ainslie's discussion of willpower by highlighting another common misconception in the literature: the conflation of self-control and willpower. In our commentary, we identify this issue and discuss the importance of recognizing willpower not as synonymous... View Details
- February 2021 (Revised October 2021)
- Case
Collab Capital
Founded in 2020 by Jewel Burks Solomon and her partners, Barry Givens and Justin Dawkins, Collab Capital was a new investment firm built on two pillars: first, it would identify and support ventures founded by Black entrepreneurs, a group underrepresented in... View Details
- February 2021
- Case
Yellow Digital Retailers: Providing Solar Electricity to Transform Rural Africa
By: Lynda M. Applegate, Frank V. Cespedes and Michael Norris
In 2020, Mike Heyink and Maya Stewart, co-founders of the Pay-as-you-Go Solar company Yellow were considering how to grow their startup. They had achieved some success in their first market, Malawi, and had recently entered Uganda, where business was slower. What did... View Details
- 2021
- Working Paper
Does Observability Amplify Sensitivity to Moral Frames? Evaluating a Reputation-Based Account of Moral Preferences
By: Valerio Capraro, Jillian J. Jordan and Ben Tappin
A growing body of work suggests that people are sensitive to moral framing in economic games involving prosociality, suggesting that people hold moral preferences for doing the “right thing”. What gives rise to these preferences? Here, we evaluate the explanatory power... View Details
- January 2021
- Case
mPharma (A)
By: Rembrand Koning, John D. Macomber, Pippa Tubman Armerding and Wale Lawal
mPharma pioneered electronic prescriptions in Ghana, and aimed to increase drug affordability and accessibility in Africa, but the company remained unprofitable. Following investor concerns about mPharma's business, CEO Gregory Rockson considered alternative business... View Details
Keywords: Strategy; Entrepreneurship; Acquisition; Health; Business Model; Health Industry; Technology Industry; Ghana
- January 2021
- Supplement
mPharma (B)
By: Rembrand Koning, John D. Macomber, Pippa Tubman Armerding and Wale Lawal
mPharma pioneered electronic prescriptions in Ghana, and aimed to increase drug affordability and accessibility in Africa, but the company remained unprofitable. Following investor concerns about mPharma's business, CEO Gregory Rockson considered alternative business... View Details
Keywords: Strategy; Health; Entrepreneurship; Business Model; Health Industry; Technology Industry; Ghana