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- January 2024
- Article
Cost of Exempting Sole Orphan Drugs from Medicare Negotiation
By: Matthew Vogel, Olivia Zhao, William B. Feldman, Amitabh Chandra, Aaron S. Kesselheim and Benjamin N. Rome
Importance: The Inflation Reduction Act (IRA) requires Medicare to negotiate prices for some high-spending drugs but exempts drugs approved solely for the treatment of a single rare disease.
Objective: To estimate Medicare spending and global... View Details
Objective: To estimate Medicare spending and global... View Details
- 2023
- Working Paper
What Do Impact Investors Do Differently?
In recent years, impact investors – private investors who seek to generate simultaneously financial and social returns – have attracted intense interest and controversy. We analyze a novel, comprehensive data set of impact and traditional investors to assess how the... View Details
- October 2023
- Case
Prime Coalition: Estimating Climate Impact
A case on CRANE, a tool to help investors and green technology companies estimate the future climate impact of new technologies and products, called emissions reduction potential (ERP). The case includes material on CRANE’s methodology for estimating future carbon... View Details
- May 2023 (Revised June 2023)
- Teaching Note
Independent Governance of Meta’s Social Spaces: The Oversight Board
Teaching Note for HBS Case No. 823-111. View Details
- March 2023 (Revised April 2023)
- Case
Independent Governance of Meta’s Social Spaces: The Oversight Board
Julie Owono is a member of the Oversight Board, an outside entity with the authority to make binding decisions on tricky moderation questions for Meta's companies. She considers the Board's impact, and its future. View Details
- January 2023
- Case
Year Up: Measuring and Scaling Impact
Year Up, a non-profit that provides training and practical work experience to low-income young people, has for years prioritized impact measurement. By 2022, it had built a robust body of evidence demonstrating that its program yields higher earnings for participants.... View Details
- 2024
- Working Paper
Do Collusive Norms Maximize Profits? Evidence From a Vegetable Market Experiment in India
By: Abhijit Banerjee, Greg Fischer, Dean Karlan, Matt Lowe and Benjamin N. Roth
Social norms have been shown to facilitate anti-competitive behavior in decentralized markets.
We demonstrate that these norms can also reduce aggregate profits. First, we present
descriptive evidence of competition-suppressing norms in Kolkata vegetable markets.... View Details
- 2022
- Working Paper
Social Protection and Social Distancing During the Pandemic: Mobile Money Transfers in Ghana
By: Dean Karlan, Matt Lowe, Robert Osei, Isaac Osei-Akoto, Benjamin N. Roth and Christopher Udry
We study the impact of mobile money transfers to a representative sample of low-income
Ghanaians during the COVID-19 pandemic. The announcement of the upcoming transfers
affects neither consumption, well-being, nor social distancing. Once disbursed,... View Details
- March 2022
- Article
Contractual Restrictions and Debt Traps
By: Ernest Liu and Benjamin N. Roth
Microcredit and other forms of small-scale finance have failed to catalyze entrepreneurship in developing countries. In these credit markets, borrowers and lenders often bargain over not only the interest rate but also implicit restrictions on types of investment. We... View Details
- March 2022
- Article
Targeting High Ability Entrepreneurs Using Community Information: Mechanism Design in the Field
Identifying high-growth microentrepreneurs in low-income countries remains a challenge due to a scarcity of verifiable information. With a cash grant experiment in India we demonstrate that community knowledge can help target high-growth microentrepreneurs; while the... View Details
- January 2022 (Revised March 2024)
- Teaching Note
A Close Shave at Squire
Teaching Note for HBS Case No. 821-073. View Details
- December 2021
- Article
India's Food Supply Chain during the Pandemic
By: Matt Lowe, G.V. Nadhanael and Benjamin N. Roth
We document the impact of India’s COVID-19 lockdown on the food supply chain. Food arrivals in wholesale markets dropped by 69% in the three weeks following the lockdown and wholesale prices rose by 8%. Six weeks after the lockdown began, volumes and prices had fully... View Details
Keywords: COVID-19; Supply Chain; Health Pandemics; Food; Policy; System Shocks; Food and Beverage Industry; India
- November 2021 (Revised March 2022)
- Teaching Note
Husk Power: Scaling the Venture
By: Benjamin N. Roth and Natalia Rigol
Teaching Note for HBS Case No. 819-069. View Details
- 2024
- Working Paper
Intrinsic Motivation and Referrals Within Firms: Evidence from a Large Microfinance Institution
By: Natalia Rigol and Benjamin N. Roth
Many organizations rely on internal referrals between employees with differing
comparative advantages. Yet when an employee encounters a lucrative opportunity,
they may be motivated to retain it even when doing so harms efficiency. We develop
a framework that... View Details
- July 2021
- Case
A Close Shave at Squire
In 2020, just after closing a $34 million Series B financing round, Dave Salvant and Songe LaRon consider how to adjust their business, Squire Technologies, to the new realities posed by the COVID-19 pandemic. Their barbershop technology, including tools to run a shop... View Details
- June 2021
- Article
Making Marketplaces Safe: Dominant Individual Rationality and Applications to Market Design
By: Benjamin N. Roth and Ran I. Shorrer
Often market designers cannot force agents to join a marketplace rather than using pre-existing institutions. We propose a new desideratum for marketplace design that guarantees the safety of participation: Dominant Individual Rationality (DIR). A marketplace is DIR if... View Details
- September 2020 (Revised December 2020)
- Technical Note
Impact Investment, Catalytic Capital and Blended Finance
- February 2020 (Revised March 2020)
- Case
Prime Coalition: Catalytic Capital for Climate Innovation
By: Ramana Nanda, Benjamin N. Roth and Olivia Hull
With long development timelines and high risk, new energy technologies were often left to languish in the “valley of death,” unable to raise enough funds to bring a product to market. In 2014, Sarah Kearney founded the nonprofit Prime Coalition to solve this problem.... View Details
Keywords: Energy Conservation; Renewable Energy; Social Entrepreneurship; Venture Capital; Investment; Innovation and Invention; Technological Innovation; Mission and Purpose; Science-Based Business; Nonprofit Organizations; Social Enterprise; Energy Industry; Technology Industry; Green Technology Industry; United States
- 2021
- Working Paper
Impact Investing: A Theory of Financing Social Enterprises
By: Benjamin N. Roth
I present a model of financing social enterprises to delineate the role of impact investors relative to “pure” philanthropists. I characterize the optimal scale and structure of a social enterprise when financed by grants, and when financed by investments. Impact... View Details
- June 2019
- Article
Debt Traps? Market Vendors and Moneylender Debt in India and the Philippines
By: Dean Karlan, Sendhil Mullainathan and Benjamin Roth
A debt trap occurs when someone takes on a high-interest rate loan and is barely able to pay back the interest, and thus perpetually finds themselves in debt (often by refinancing). Studying such practices is important for understanding financial decision-making of... View Details
Keywords: Borrowing and Debt; Household; Personal Finance; Decision Making; Behavior; India; Philippines