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Show Results For
- All HBS Web
(2,108)
- People (1)
- News (435)
- Research (1,507)
- Events (49)
- Multimedia (13)
- Faculty Publications (929)
- 20 Feb 2014
- News
Buying Gold in the Olympics and in the Global War for Talent
- November 2024
- Article
The Health Costs of Cost Sharing
By: Amitabh Chandra, Evan Flack and Ziad Obermeyer
What happens when patients suddenly stop their medications? We study the health consequences of drug interruptions caused by large, abrupt, and arbitrary changes in price. Medicare’s prescription drug benefit as-if-randomly assigns 65-year-olds a drug budget as a... View Details
Chandra, Amitabh, Evan Flack, and Ziad Obermeyer. "The Health Costs of Cost Sharing." Quarterly Journal of Economics 139, no. 4 (November 2024): 2037–2082.
- 2009
- Working Paper
Endowments, Fiscal Federalism, and the Cost of Capital for States: Evidence from Brazil, 1891-1930
By: Andre C. Martinez Fritscher and Aldo Musacchio
There is a large amount of literature that aims to explain what determines country risk (defined as the difference between the yield of a sovereign's bonds and the risk-free rate). In this paper, we contribute to the discussion by arguing that an important explanatory... View Details
- 2025
- Working Paper
Climate Risk and the U.S. Insurance Gap: Measurement, Drivers and Implications
By: Parinitha Sastry, Tess Scharlemann, Ishita Sen and Ana-Maria Tenekedjieva
In a world with rising risk, how much are U.S. households willing to pay for homeowners insurance, and what does their demand imply for the future of insurance markets? We provide the first estimates of household willingness to pay for homeowners insurance and the... View Details
Keywords: Climate Change; Risk and Uncertainty; Insurance; Personal Finance; Consumer Behavior; Mortgages
Sastry, Parinitha, Tess Scharlemann, Ishita Sen, and Ana-Maria Tenekedjieva. "The Limits of Insurance Demand and the Growing Protection Gap." Harvard Business School Working Paper, No. 25-054, February 2025.
- January 2023 (Revised August 2023)
- Case
Veeva Systems and the Transformation to a Public Benefit Corporation
By: Ranjay Gulati and Allison M. Ciechanover
Peter Gassner, the co-founder and CEO of Veeva Systems, steered the company through rapid scaling from its launch in 2007 to 2022. Year after year, the company had exceeded expectations, with its market capitalization reaching $50 billion at its peak. By 2022, the... View Details
Keywords: Transformation; Corporate Governance; Corporate Social Responsibility and Impact; Mission and Purpose; Organizational Culture; Information Technology Industry; Technology Industry; United States; California
Gulati, Ranjay, and Allison M. Ciechanover. "Veeva Systems and the Transformation to a Public Benefit Corporation." Harvard Business School Case 423-045, January 2023. (Revised August 2023.)
- 2024
- Working Paper
The Cram Method for Efficient Simultaneous Learning and Evaluation
By: Zeyang Jia, Kosuke Imai and Michael Lingzhi Li
We introduce the "cram" method, a general and efficient approach to simultaneous learning and evaluation using a generic machine learning (ML) algorithm. In a single pass of batched data, the proposed method repeatedly trains an ML algorithm and tests its empirical... View Details
Keywords: AI and Machine Learning
Jia, Zeyang, Kosuke Imai, and Michael Lingzhi Li. "The Cram Method for Efficient Simultaneous Learning and Evaluation." Working Paper, March 2024.
- 2010
- Working Paper
Substitution Patterns of the Random Coefficients Logit
By: Thomas J. Steenburgh and Andrew Ainslie
Previous research suggests that the random coefficients logit is a highly flexible model that overcomes the problems of the homogeneous logit by allowing for differences in tastes across individuals. The purpose of this paper is to show that this is not true. We prove... View Details
Steenburgh, Thomas J., and Andrew Ainslie. "Substitution Patterns of the Random Coefficients Logit." Harvard Business School Working Paper, No. 10-053, January 2010.
- June 2024
- Article
Real Growth in Space Manufacturing Output Substantially Exceeds Growth in the Overall Space Economy
By: Tina Highfill and Matthew Weinzierl
Accurately measuring real economic output in the space economy is made difficult by the rapid increase in capabilities and decrease in prices of launch and satellite technologies achieved over the past two decades. Nominal measures of output in space will tend to... View Details
Highfill, Tina, and Matthew Weinzierl. "Real Growth in Space Manufacturing Output Substantially Exceeds Growth in the Overall Space Economy." Acta Astronautica 219 (June 2024): 236–242.
- September 2016 (Revised October 2018)
- Case
LabCDMX: Experiment 50
By: Mitchell Weiss and Maria Fernanda Miguel
There were probably 30,000 public buses, minibuses, and vans in Mexico City. Though, in 2015, no one knew for certain since no comprehensive schedule existed. This was why el Laboratorio para la Ciudad (or LabCDMX) had spawned an effort to generate a map of the... View Details
Keywords: Public Entrepreneurship; Experimentation; Lean Startup; Government; Innovation; Crowdsourcing; Open Data; Entrepreneurship; Social Entrepreneurship; Innovation and Invention; Innovation Leadership; Government Administration; Transportation; Transportation Industry; Mexico City; Mexico
Weiss, Mitchell, and Maria Fernanda Miguel. "LabCDMX: Experiment 50." Harvard Business School Case 817-031, September 2016. (Revised October 2018.)
- February 2007
- Article
Strategic Bidder Behavior in Sponsored Search Auctions
By: Benjamin Edelman and Michael Ostrovsky
We examine sponsored search auctions run by Overture (now part of Yahoo!) and Google and present evidence of strategic bidder behavior in these auctions. Between June 15, 2002, and June 14, 2003, we estimate that Overture's revenue from sponsored search might have been... View Details
Keywords: Auctions; Strategy; Behavior; Revenue; Performance Efficiency; Bids and Bidding; Search Technology
Edelman, Benjamin, and Michael Ostrovsky. "Strategic Bidder Behavior in Sponsored Search Auctions." Decision Support Systems 43, no. 1 (February 2007): 192–198. (Winner of Emerald Citations of Excellence.)
Does Context Outweigh Individual Characteristics in Driving Voting Behavior? Evidence from Relocations within the U.S.
We measure the overall influence of contextual versus individual factors (e.g., voting rules and media as opposed to race and education) on voter behavior, and explore underlying mechanisms. Using a US-wide voter-level panel, 2008–2018, we examine voters who... View Details
Financing the African Colonial State: The Revenue Imperative and Forced Labor
Although recent studies on African colonial tax systems have deepened our understanding of early fiscal capacity building efforts in the region, they have largely... View Details
Survival of the Fittest: The Impact of the Minimum Wage on Firm Exit
Abstract: We study the impact of the minimum wage on firm exit in the restaurant industry, exploiting recent changes in the minimum wage at the city level. The evidence suggests that higher minimum wages increase overall exit rates for restaurants. However, lower... View Details
- 2022
- Working Paper
How Do Investors Value ESG?
By: Malcolm Baker, Mark Egan and Suproteem K. Sarkar
Environmental, social, and governance (ESG) objectives have risen to near the top of the agenda for corporate executives and boards, driven in large part by their perceptions of shareholder interest. We quantify the value that shareholders place on ESG using a revealed... View Details
Keywords: Investment; Investment Portfolio; Corporate Social Responsibility and Impact; Business and Shareholder Relations; Environmental Sustainability; Governance; Financial Services Industry; United States
Baker, Malcolm, Mark Egan, and Suproteem K. Sarkar. "How Do Investors Value ESG?" NBER Working Paper Series, No. 30708, December 2022. (Harvard Business School Working Paper, No. 23-028, November 2022.)
- October–December 2022
- Article
Achieving Reliable Causal Inference with Data-Mined Variables: A Random Forest Approach to the Measurement Error Problem
By: Mochen Yang, Edward McFowland III, Gordon Burtch and Gediminas Adomavicius
Combining machine learning with econometric analysis is becoming increasingly prevalent in both research and practice. A common empirical strategy involves the application of predictive modeling techniques to "mine" variables of interest from available data, followed... View Details
Keywords: Machine Learning; Econometric Analysis; Instrumental Variable; Random Forest; Causal Inference; AI and Machine Learning; Forecasting and Prediction
Yang, Mochen, Edward McFowland III, Gordon Burtch, and Gediminas Adomavicius. "Achieving Reliable Causal Inference with Data-Mined Variables: A Random Forest Approach to the Measurement Error Problem." INFORMS Journal on Data Science 1, no. 2 (October–December 2022): 138–155.
- 2021
- Working Paper
Going to Extremes: Crucibles, Multiple Sensitive Periods, and Career Progression
By: Prithwiraj Choudhury, Sunasir Dutta, Hise O. Gibson and Eric Lin
We study the effects of crucible experiences along multiple sensitive periods on career progression. While prior literature has hinted that individuals can be imprinted during multiple sensitive periods, not just during the early career, there has been scant attention... View Details
Choudhury, Prithwiraj, Sunasir Dutta, Hise O. Gibson, and Eric Lin. "Going to Extremes: Crucibles, Multiple Sensitive Periods, and Career Progression." Harvard Business School Working Paper, No. 22-006, August 2021.
- 2012
- Working Paper
The First Deal: The Division of Founder Equity in New Ventures
By: Thomas F. Hellmann and Noam Wasserman
This paper examines the division of founder shares in entrepreneurial ventures, focusing on the decision of whether or not to divide the shares equally among all founders. To motivate the empirical analysis we develop a simple theory of costly bargaining, where... View Details
Hellmann, Thomas F., and Noam Wasserman. "The First Deal: The Division of Founder Equity in New Ventures." Harvard Business School Working Paper, No. 14-085, March 2014.
- Research Summary
The Economics of Enterprise IT
Why do some organizations adopt new information systems while others do not? Why do some face high costs while others do not? Professor Greenstein has been pursuing this stream of research throughout his career, analyzing the factors shaping the costs of acquiring... View Details
- December 1990 (Revised November 1992)
- Case
Anheuser-Busch and Campbell Taggart
In 1984, the SEC accused Paul Thayer and eight others of insider trading. Some of Thayer's inside information came from his position on the board of Anheuser-Busch, where he had learned about Busch's 1982 merger with Campbell Taggart before the merger was publicly... View Details
Keywords: Crime and Corruption; Ethics; Capital Markets; Manufacturing Industry; Food and Beverage Industry; United States
Sirri, Erik R. "Anheuser-Busch and Campbell Taggart." Harvard Business School Case 291-020, December 1990. (Revised November 1992.)