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- All HBS Web (1,783)
- Faculty Publications (537)
- September–October 2017
- Article
The Surprising Power of Online Experiments: Getting the Most Out of A/B and Other Controlled Tests
By: Ron Kohavi and Stefan Thomke
In the fast-moving digital world, even experts have a hard time assessing new ideas. Case in point: At Bing, a small headline change an employee proposed was deemed a low priority and shelved for months until one engineer decided to do a quick online controlled... View Details
Kohavi, Ron, and Stefan Thomke. "The Surprising Power of Online Experiments: Getting the Most Out of A/B and Other Controlled Tests." Harvard Business Review 95, no. 5 (September–October 2017): 74–82.
- 2016
- Working Paper
Options-Pricing Formula with Disaster Risk
By: Robert J. Barro and Gordon Y. Liao
A new options-pricing formula applies to far-out-of-the money put options on the overall stock market when disaster risk is the dominant force, the size distribution of disasters follows a power law, and the economy has a representative agent with Epstein-Zin utility.... View Details
Barro, Robert J., and Gordon Y. Liao. "Options-Pricing Formula with Disaster Risk." NBER Working Paper Series, No. 21888, January 2016.
- 2010
- Working Paper
The Mirroring Hypothesis: Theory, Evidence and Exceptions
The mirroring hypothesis predicts that the organizational patterns of a development project (e.g. communication links, geographic collocation, team and firm co-membership) will correspond to the technical patterns of dependency in the system under development. Scholars... View Details
Keywords: Infrastructure; Product Design; Organizational Design; Practice; Groups and Teams; Social and Collaborative Networks; Information Technology
Baldwin, Carliss Y. "The Mirroring Hypothesis: Theory, Evidence and Exceptions." Harvard Business School Working Paper, No. 10-058, January 2010. (Revised June 2010.)
- April 2009 (Revised May 2010)
- Case
Partners In Health: HIV Care in Rwanda
By: Michael E. Porter, Scott S. Lee, Joseph Rhatigan and Jim Yong Kim
In 2005, Partners in Health (PIH) was invited by the Rwandan Ministry of Health to assume responsibility for the management of public health care in two rural districts in Eastern Rwanda and create an HIV treatment program at these sites. PIH successfully implemented a... View Details
Keywords: Developing Countries and Economies; Health Care and Treatment; Health Testing and Trials; Medical Specialties; Service Delivery; Nonprofit Organizations; Expansion; Health Industry; Rwanda
Porter, Michael E., Scott S. Lee, Joseph Rhatigan, and Jim Yong Kim. "Partners In Health: HIV Care in Rwanda." Harvard Business School Case 709-474, April 2009. (Revised May 2010.)
The Surprising Power of Online Experiments
In the fast-moving digital world, even experts have a hard time assessing new ideas. Case in point: At Bing a small headline change an employee proposed was deemed a low priority and shelved for months until one engineer decided to do a quick online controlled... 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
Keywords: COVID-19; Stock Returns; Health Pandemics; Stocks; Investment Return; Forecasting and Prediction
Alfaro, Laura, Anusha Chari, Andrew Greenland, and Peter K. Schott. "Aggregate and Firm-Level Stock Returns During Pandemics, in Real Time." NBER Working Paper Series, No. 26950, April 2020. (Revised May 2020.)
- 2015
- Chapter
Information Technology and the Distribution of Inventive Activity
By: Chris Forman, Avi Goldfarb and Shane Greenstein
We examine the relationship between the diffusion of advanced Internet technology and the geographic concentration of invention, as measured by patents. First, we show that patenting became more concentrated from the early 1990s to the early 2000s and, similarly, that... View Details
Forman, Chris, Avi Goldfarb, and Shane Greenstein. "Information Technology and the Distribution of Inventive Activity." In The Changing Frontier: Rethinking Science and Innovation Policy, edited by Adam Jaffe and Benjamin Jones, 169–196. University of Chicago Press, 2015.
- 18 Aug 2014
- Research & Ideas
Have a Better Idea To Improve Health Care?
these innovations exist. (The remaining imperatives: Make value the central objective; promote novel approaches to process improvement; make consumerism really work; and decentralize approaches to problem solving.) "Health care, in terms of View Details
- 2021
- Working Paper
The Great Unequalizer: Initial Health Effects of COVID-19 in the United States
By: Marcella Alsan, Amitabh Chandra and Kosali I. Simon
We measure inequities from the COVID-19 pandemic on mortality and hospitalizations in the United States during the early months of the outbreak. We discuss challenges in measuring health outcomes and health inequality, some of which are specific to COVID-19 and others... View Details
Alsan, Marcella, Amitabh Chandra, and Kosali I. Simon. "The Great Unequalizer: Initial Health Effects of COVID-19 in the United States." NBER Working Paper Series, No. 28958, June 2021.
- 2010
- Working Paper
Surviving the Global Financial Crisis: Foreign Direct Investment and Establishment Performance
By: Laura Alfaro and Maggie Chen
We examine in this paper the differential response of establishments to the global financial crisis, with particular emphasis on the role of foreign direct investment (FDI) in determining micro economic performance. Using a new worldwide dataset that reports the... View Details
Keywords: Financial Crisis; International Finance; Foreign Direct Investment; Local Range; Multinational Firms and Management; Production; Performance Evaluation; Networks
Alfaro, Laura, and Maggie Chen. "Surviving the Global Financial Crisis: Foreign Direct Investment and Establishment Performance." Harvard Business School Working Paper, No. 10-110, June 2010.
- 2020
- Working Paper
Digital Experimentation and Startup Performance: Evidence from A/B Testing
By: Rembrand Koning, Sharique Hasan and Aaron Chatterji
Recent work argues that experimentation is the appropriate framework for entrepreneurial strategy. We investigate this proposition by exploiting the time-varying adoption of A/B testing technology, which has drastically reduced the cost of experimentally testing... View Details
Keywords: Experimentation; A/B Testing; Data-driven Decision-making; Entrepreneurship; Strategy; Business Startups; Information Technology; Performance
Koning, Rembrand, Sharique Hasan, and Aaron Chatterji. "Digital Experimentation and Startup Performance: Evidence from A/B Testing." Harvard Business School Working Paper, No. 20-018, August 2019. (Revised September 2020. SSRN Working Paper Series, No. 3440291, August 2019)
- August 2018
- Case
Enfoca: Private Equity in Peru
By: Victoria Ivashina and Jeffrey Boyar
This case follows Enfoca, Peru’s largest local private equity firm and its portfolio company Maestro, a leading player in Peru’s hardware retail market. Peru’s GDP growth between 2008 and 2014 was the highest of any Latin American country. Growth of the Peruvian middle... View Details
Ivashina, Victoria, and Jeffrey Boyar. "Enfoca: Private Equity in Peru." Harvard Business School Case 219-030, August 2018.
- 25 Sep 2000
- Research & Ideas
More Than the Sum of Its Parts: The Impact of Modularity on the Computer Industry
holding a lot of options on each module within a computer system—an option on the disk drives, the software, the CPU. CB: These "options on modules" are like financial options. As we show in the book, you can use financial View Details
- 13 Oct 2006
- Working Paper Summaries
Pricing Liquidity: The Quantity Structure of Immediacy Prices
- 2015
- Working Paper
Can Marshall's Clusters Survive Globalization?
By: Giulio Buciuni and Gary P. Pisano
It is widely presumed that in today's globalized economy, the value of geographic clustering of manufacturing industries is no longer valuable. Manufacturing is represented as a highly mobile "commodity" that can be sourced from anywhere in the world where factor costs... View Details
Keywords: Manufacturing; Globalization; Marshall Industrial Clusters; Global Supply Chains; Manufacturing Industry
Buciuni, Giulio, and Gary P. Pisano. "Can Marshall's Clusters Survive Globalization?" Harvard Business School Working Paper, No. 15-088, May 2015.
- 06 Oct 2016
- HBS Seminar
John Van Reenen, MIT Sloan School of Management
TransDigm in 2017: The Beginning of the End or The End of the Beginning?
TransDigm, an incredibly successful yet relatively unknown company, manufactures a wide range of highly engineered aerospace parts utilizing a somewhat controversial strategy. In the 10 years following its IPO in March 2006, its stock price increased by... View Details
- 2019
- Working Paper
Government Technology Policy, Social Value, and National Competitiveness
By: Frank Nagle
This study seeks to better understand the impact that government technology procurement regulations have on social value and national competitiveness. To do this, it examines the impact of a change in France’s technology procurement policy that required government... View Details
Keywords: Social Value; Competitiveness; Government Administration; Information Technology; Acquisition; Policy; Value
Nagle, Frank. "Government Technology Policy, Social Value, and National Competitiveness." Harvard Business School Working Paper, No. 19-103, March 2019.
- January 2015
- Article
Marketplace or Reseller?
By: Andrei Hagiu and Julian Wright
Intermediaries can choose between functioning as a marketplace (on which suppliers sell their products directly to buyers) or as a reseller (purchasing products from suppliers and selling them to buyers). We model this as a decision between whether control rights over... View Details
Hagiu, Andrei, and Julian Wright. "Marketplace or Reseller?" Management Science 61, no. 1 (January 2015): 184–203.