Publications
Publications
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- All HBS Web
(2,118)
- Faculty Publications (549)
- May 2020
- Article
Identifying Sources of Inefficiency in Health Care
By: Amitabh Chandra and Douglas O. Staiger
In medicine, the reasons for variation in treatment rates across hospitals serving similar patients are not well understood. Some interpret this variation as unwarranted and push standardization of care as a way of reducing allocative inefficiency. However, an... View Details
- 2020
- Working Paper
Spreading the Health: Americans' Estimated and Ideal Distributions of Death and Health(care)
By: Sorapop Kiatpongsan and Michael I. Norton
The 2010 Patient Protection and Affordable Care Act intensified debates over the role of government in the distribution of healthcare. A nationally-representative sample of Americans reported their estimated and ideal distributions of healthcare (unmet need for... View Details
- 2020
- Working Paper
Demystifying the Math of the Coronavirus
By: Elon Kohlberg and Abraham Neyman
We provide an elementary mathematical description of the spread of the coronavirus. We explain two fundamental relationships: How the rate of growth in new infections is determined by the “effective reproductive number” and how the effective reproductive number is... View Details
- April 2020 (Revised June 2022)
- Technical Note
Quantitative Analysis in Marketing
By: Sunil Gupta
Marketing is a combination of art and science that requires both qualitative and quantitative analysis to arrive at effective decisions. This note highlights how quantitative analysis can help in the following marketing decisions: estimating market size, determining... View Details
- April 2020 (Revised October 2021)
- Case
SpaceX, Economies of Scale, and a Revolution in Space Access
By: Matthew C. Weinzierl, Kylie Lucas and Mehak Sarang
From the time he transformed the world of online banking, Elon Musk established himself as a bold innovator. After selling X.com to PayPal in 2002, he founded a series of revolutionary start-ups, starting with Space Exploration Technologies (SpaceX). Hoping to "make... View Details
- 2020
- Working Paper
No Line Left Behind: Assortative Matching Inside the Firm
By: Achyuta Adhvaryu, Vittorio Bassi, Anant Nyshadham and Jorge Tamayo
How do firms pair workers with managers, and which constraints affect the allocation of labor within the firm? We characterize the sorting pattern of managers to workers in a large readymade garment manufacturer in India and then explore potential drivers of the... View Details
- 2020
- Working Paper
Aggregate and Firm-Level Stock Returns During Pandemics, in Real Time
By: Laura Alfaro, Anusha Chari, Andrew Greenland and Peter K. Schott
We show that unexpected changes in the trajectory of COVID-19 infections predict U.S. stock returns, in real time. Parameter estimates indicate that an unanticipated doubling (halving) of projected infections forecasts next-day decreases (increases) in aggregate U.S.... View Details
- April 2020
- Article
CEO Behavior and Firm Performance
By: Oriana Bandiera, Stephen Hansen, Andrea Prat and Raffaella Sadun
We measure the behavior of 1,114 CEOs in six countries parsing granular CEO diary data through an unsupervised machine learning algorithm. The algorithm uncovers two distinct behavioral types: "leaders" and "managers." Leaders focus on multi-function, high-level... View Details
- April 2020
- Article
Field Comparisons of Incentive-Compatible Preference Elicitation Techniques
By: Shawn A. Cole, A. Nilesh Fernando, Daniel Stein and Jeremy Tobacman
Knowledge of consumer demand is important for firms, policy makers, and economists. One common tool for incentive-compatible demand elicitation, the Becker-DeGroot-Marschak (BDM) mechanism, has been widely used in laboratory settings but rarely evaluated for... View Details
- Article
Human Capital and the Future of Work: Implications for Investors and ESG Integration
By: Sakis Kotsantonis and George Serafeim
Human capital development (HCD) is a key consideration for most companies, but only recently have investors focused on understanding the risks and opportunities related to human capital with the emergence of environmental, social, and governance (ESG) investment... View Details
- 2020
- Working Paper
Working (From Home) During a Crisis: Online Social Contributions by Workers During the Coronavirus Shock
By: Prithwiraj Choudhury, Wesley W. Koo and Xina Li
Prior research has documented that during mortality-related crises workers face psychic costs and are motivated to make social contributions. In addition, management practices that encourage workers to make social contributions during a crisis create value for firms.... View Details
- March 2020 (Revised June 2023)
- Case
EyeControl: Inspiring Communication
By: Paul A. Gompers and Danielle Golan
Eye-controlled communication device startup EyeControl was founded in Tel Aviv, Israel in 2016 by cofounders with a shared personal connection to locked-in syndrome—a neurological disorder that left sufferers cognitively sound, yet paralyzed, with the exception of eye... View Details
- 2021
- Working Paper
Corporate Environmental Impact: Measurement, Data and Information
By: David Freiberg, DG Park, George Serafeim and T. Robert Zochowski
As an organization’s environmental impact has become a central societal consideration, thereby affecting industry and organizational competitiveness, interest in measuring and analyzing environmental impact has increased. We develop a methodology to derive comparable... View Details
Keywords: Environment; Impact; Measurement; Environmental Ratings; Corporate Valuation; Financial Materiality; Sustainability; Environmental Impact; Environmental Strategy; Impact-Weighted Accounts; IWAI; Environmental Sustainability; Corporate Social Responsibility and Impact; Measurement and Metrics; Valuation
- 2020
- Working Paper
The Effects of Hierarchy on Learning and Performance in Business Experimentation
By: Sourobh Ghosh, Stefan Thomke and Hazjier Pourkhalkhali
Do senior managers help or hurt business experiments? Despite the widespread adoption of business experiments to guide strategic decision-making, we lack a scholarly understanding of what role senior managers play in firm experimentation. Using proprietary data of live... View Details
- 2021
- Working Paper
Recovering Investor Expectations from Demand for Index Funds
By: Mark Egan, Alexander J. MacKay and Hanbin Yang
We use a revealed-preference approach to estimate investor expectations of stock market returns. Using data on demand for index funds that follow the S&P 500, we develop and estimate a model of investor choice to flexibly recover the time-varying distribution of... View Details
- January 2020
- Article
Rethinking Measurement of Pay Disparity and Its Relation to Firm Performance
By: Ethan Rouen
I develop measures of firm-level pay disparity and examine their relation to firm performance. Using comprehensive compensation data for a large sample of firms, I find no statistically significant relation between the ratio of CEO-to-mean employee compensation and... 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
- 2020
- Working Paper
Internal Models, Make Believe Prices, and Bond Market Cornering
By: Ishita Sen and Varun Sharma
Exploiting position-level heterogeneity in regulatory incentives to misreport and novel data on regulators, we document that U.S. life insurers inflate the values of corporate bonds using internal models. We estimate an additional $9-$18 billion decline in regulatory... View Details
- 2019
- Article
Time Series Experiments and Causal Estimands: Exact Randomization Tests and Trading
By: Iavor I Bojinov and Neil Shephard
We define causal estimands for experiments on single time series, extending the potential outcome framework to dealing with temporal data. Our approach allows the estimation of a broad class of these estimands and exact randomization based p-values for testing causal... View Details
- November 2019
- Supplement
Gillette: Cutting Prices to Regain Share
By: Benjamin C. Esty and Daniel Fisher
After losing market share to low-priced competitors such as Harry’s and Dollar Shave Club for several years, Gillette decided to fight back by cutting prices on its razors and blades in April 2017. Bonnie Herzog, an equity analyst at Wells Fargo, must assess how the... View Details