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- All HBS Web
(1,875)
- People (1)
- News (320)
- Research (1,406)
- Events (19)
- Multimedia (5)
- Faculty Publications (480)
Changes in Quality of Care After Hospital Mergers and Acquisitions
The hospital industry has consolidated substantially during the past two decades and at an accelerated pace since 2010. Multiple studies have shown that hospital mergers have led to higher prices for commercially insured patients, but research about effects on... View Details
- 2016
- Working Paper
College Tuition, Public Finance and New Business Starts
By: Gareth Olds
A growing public discourse cites the rising cost of education and student debt overhang as a contributor to slow economic growth. A parallel discussion explores the causes of the secular decline in business dynamism and entrepreneurship rates in the United States over... View Details
Olds, Gareth. "College Tuition, Public Finance and New Business Starts." Harvard Business School Working Paper, No. 16-145, June 2016.
- March 2022
- Article
Where to Locate COVID-19 Mass Vaccination Facilities?
By: Dimitris Bertsimas, Vassilis Digalakis Jr, Alexander Jacquillat, Michael Lingzhi Li and Alessandro Previero
The outbreak of COVID-19 led to a record-breaking race to develop a vaccine. However, the limited vaccine capacity creates another massive challenge: how to distribute vaccines to mitigate the near-end impact of the pandemic? In the United States in particular, the new... View Details
Keywords: Vaccines; COVID-19; Health Care and Treatment; Health Pandemics; Performance Effectiveness; Analytics and Data Science; Mathematical Methods
Bertsimas, Dimitris, Vassilis Digalakis Jr, Alexander Jacquillat, Michael Lingzhi Li, and Alessandro Previero. "Where to Locate COVID-19 Mass Vaccination Facilities?" Naval Research Logistics Quarterly 69, no. 2 (March 2022): 179–200.
- January 2017
- Article
Impact Evaluation Methods in Public Economics: A Brief Introduction to Randomized Evaluations and Comparison with Other Methods
By: Dina Pomeranz
Recent years have seen a large expansion in the use of rigorous impact evaluation techniques. Increasingly, public administrations are collaborating with academic economists and other quantitative social scientists to apply such rigorous methods to the study of public... View Details
Pomeranz, Dina. "Impact Evaluation Methods in Public Economics: A Brief Introduction to Randomized Evaluations and Comparison with Other Methods." Special Issue on Expanding the Frontier of Behavioral Public Economics. Public Finance Review 45, no. 1 (January 2017): 10–43. (Published early online November 5, 2015. Spanish version available by clicking on "Details.")
- 2014
- Working Paper
The Psycho-Social Benefits of Access to Contraception: Experimental Evidence from Zambia
By: Nava Ashraf, Marric Buessing, Erica Field and Jessica Leight
In a field experiment in Lusaka, Zambia, married couples in the catchment area of a family planning clinic were randomly assigned to either a treatment group (N=503) or a control group (N=768). Those in the treatment group received vouchers guaranteeing free and... View Details
Ashraf, Nava, Marric Buessing, Erica Field, and Jessica Leight. "The Psycho-Social Benefits of Access to Contraception: Experimental Evidence from Zambia." Working Paper, August 2014. (Under review.)
- 2025
- Working Paper
Training Within Firms
By: Brayan Diaz, Andrea Neyra-Nazarrett, Julian Ramirez, Raffaella Sadun and Jorge Tamayo
Training investments are essential for improving worker and firm productivity, yet their
implementation is often hindered by low participation rates and insufficient worker engagement.
This study uses data from three firms–a car manufacturer, a quick-service... View Details
Keywords: Productivity; Absenteeism; Middle Managers; Training; Management Practices and Processes; Performance Productivity; Employees
Diaz, Brayan, Andrea Neyra-Nazarrett, Julian Ramirez, Raffaella Sadun, and Jorge Tamayo. "Training Within Firms." Harvard Business School Working Paper, No. 25-045, April 2025.
- 2011
- Working Paper
Fractionalization and the Municipal Bond Market
We study the impact of ethnic and religious fractionalization on the U.S. municipal debt market and find that issuers from more ethnically and religiously fractionalized counties pay higher yields on their municipal debt. A two standard deviation increase in religious... View Details
Keywords: Ethnicity Characteristics; Bonds; Financial Markets; Investment Return; Geographic Location; City; Religion; United States
Bergstresser, Daniel, Randolph Cohen, and Siddharth Shenai. "Fractionalization and the Municipal Bond Market." Harvard Business School Working Paper, No. 11-128, June 2011.
- 03 Jun 2022
- Research & Ideas
In a Work-from-Anywhere World, How Remote Will Workers Go?
the city or town where you have an office. And, because of that, you can hire a more diverse workforce.” In the United States, this setup does create tax complexities, for instance if an employee draws a paycheck in one state but lives in... View Details
Keywords: by Kara Baskin
Managing in a Complex Environment
For the first time in anybody's memory we're starting to see the biopharmaceutical industry and the medical industry at large affected by a recession. I think there are a couple of reasons. One is very high unemployment, and every time the unemployment rate goes up,... View Details
- 28 Feb 2013
- Working Paper Summaries
Do Display Ads Influence Search? Attribution and Dynamics in Online Advertising
- 2017
- Working Paper
Lessons Unlearned? Corporate Debt in Emerging Markets
By: Laura Alfaro, Gonzalo Asis, Anusha Chari and Ugo Panizza
This paper documents a set of new stylized facts about leverage and financial fragility for emerging market firms following the Global Financial Crisis (GFC). Corporate debt vulnerability indicators during the Asian Financial Crisis (AFC) attributed to corporate... View Details
Keywords: Corporate Debt; Financial Fragility; Firm-level Data; Large Firms; Emerging Markets; Borrowing and Debt; Corporate Finance; Financial Condition
Alfaro, Laura, Gonzalo Asis, Anusha Chari, and Ugo Panizza. "Lessons Unlearned? Corporate Debt in Emerging Markets." Harvard Business School Working Paper, No. 17-097, May 2017. (Revised October 2017. NBER Working Paper Series, No. 23407, May 2017)
Market Power in Mortgage Lending and the Transmission of Monetary Policy
We present evidence that high concentration in mortgage lending reduces the sensitivity of mortgage rates and refinancing activity to mortgage-backed security (MBS) yields. We isolate the direct effect of concentration and rule out alternative explanations in two ways.... View Details
- 2023
- Working Paper
Point Four and the Politics of Foreign Direct Investment in the United States during the Early Cold War
By: Melanie Sheehan
This article traces business influence in the formulation of the Point Four technical assistance program, the first US Cold War-era international development program. It focuses specifically on business interest associations’ efforts to secure federal incentives to... View Details
Keywords: Point Four Program; Business Interest Association; International Development; Cold War; Foreign Direct Investment; Business History; Business and Government Relations
Sheehan, Melanie. "Point Four and the Politics of Foreign Direct Investment in the United States during the Early Cold War." Harvard Business School Working Paper, No. 23-078, June 2023.
- 22 Feb 2018
- News
Economists cannot avoid making value judgments
- 14 Jul 2003
- Research & Ideas
Understaffed and Overworked: What Now?
focus, effective communication, and more than a pinch of dynamism. Those were certainly apparent in Andrus's response to her rather large dilemma. "I had a problem," she says, "but there were very specific things I focused... View Details
Keywords: by Paul Michelman
- 31 Jul 2013
- Working Paper Summaries
Learning from Double-Digit Growth Experiences
Keywords: by Eric D. Werker
- February 2015
- Article
'Open' Disclosure of Innovations, Incentives and Follow-on Reuse: Theory on Processes of Cumulative Innovation and a Field Experiment in Computational Biology
By: Kevin J. Boudreau and Karim R. Lakhani
Most of society's innovation systems―academic science, the patent system, open source, etc.―are "open" in the sense that they are designed to facilitate knowledge disclosure among innovators. An essential difference across innovation systems is whether disclosure is of... View Details
Keywords: Open Innovation; Cumulative Innovation; Incentives; Search; Disclosure And Access; Knowledge Sharing; Motivation and Incentives; Collaborative Innovation and Invention
Boudreau, Kevin J., and Karim R. Lakhani. "'Open' Disclosure of Innovations, Incentives and Follow-on Reuse: Theory on Processes of Cumulative Innovation and a Field Experiment in Computational Biology." Research Policy 44, no. 1 (February 2015): 4–19.
Tracking the Short-Run Price Impact of U.S. Tariffs
This paper examines the short-run impact of the 2025 U.S. tariffs on consumer prices using a unique integration of high-frequency retail pricing data, product-level country-of-origin information, and detailed tariff classifications. By linking daily prices from major... View Details
- 2025
- Working Paper
Tracking the Short-Run Price Impact of U.S. Tariffs
By: Alberto Cavallo, Paola Llamas and Franco Vazquez
This paper examines the short-run impact of the 2025 U.S. tariffs on consumer prices using a unique integration of high-frequency retail pricing data, product-level country-of-origin information, and detailed tariff classifications. By linking daily prices from major... View Details
Cavallo, Alberto, Paola Llamas, and Franco Vazquez. "Tracking the Short-Run Price Impact of U.S. Tariffs." Working Paper, April 2025.
- 21 May 2012
- Research & Ideas
OSHA Inspections: Protecting Employees or Killing Jobs?
gain access to workers' compensation data. Because the data were collected at the company level, the researchers limited their analysis to firms with only one plant, where the effects of an inspection on injury View Details
Keywords: by Michael Blanding