Publications

winter 2003
Article

Massively Categorical Variables: Revealing the Information in Zip Codes

We introduce the idea of a massively categorical variable, a variable such as zip code that takes on too many values to be treated in the standard manner, and show how to use it directly as explanatory variables in an econometric model. In an application of this... View Details

Keywords: Strategy; Analytics and Data Science; Behavior; Marketing; Standards; Finance

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February 2018
Case

Infrastructure in Nigeria: Unlocking Pension Fund Investments

By: John Macomber and Pippa Tubman Armerding

The so-called “infrastructure finance gap” was a problem in Nigeria as in many parts of the world. Infrastructure projects like power plants and dams were very large capital investments that could generate long-term consistent cash flows, but their financing and... View Details

Keywords: Pension Fund Investing; Infrastucture; Power/Energy; Credit Enhancement; Infrastructure; Project Finance; Investment Funds; Emerging Markets; Nigeria; Africa

January 2022
Case

Somatus: Value-Based Kidney Care (A)

By: Ariel D. Stern, Robert S. Huckman and Sarah Mehta

When Dr. Ikenna Okezie founded Somatus, a value-based kidney care provider, his goal had been nothing short of transforming kidney care delivery in the United States. Rather than relying on dialysis, a costly and intensive treatment for late-stage kidney disease, the... View Details

Keywords: Business Startups; Disruption; Entrepreneurship; Health; Health Care and Treatment; Health Disorders; Medical Specialties; Innovation and Invention; Disruptive Innovation; Management; Strategy; Business Strategy; Value; Value Creation; Health Industry; United States; Virginia

Research Summary

Overview

By: Feng Zhu

Professor Zhu’s research focuses on the design of platform business models and its impact on platform performance. Platforms have become central to our economy. A platform is a product or service that enables two or more customer groups to interact. For example,... View Details

September 1992 (Revised October 1992)
Case

Acid Rain: The Southern Co. (B)

By: Forest L. Reinhardt

In addition to the issues of expected cost minimization elucidated in Acid Rain: The Southern Co. (A), problems involving regulatory uncertainty are critical to the firm's Clean Air Act compliance strategy. The regulatory uncertainty affects, and is affected by, the... View Details

Keywords: Energy Generation; Business Strategy; Environmental Sustainability; Cost vs Benefits; Risk and Uncertainty; Strategic Planning; Investment Return; Government Legislation; Wastes and Waste Processing; Business and Government Relations; Utilities Industry; Energy Industry; United States

13 Jul 2020
Research & Ideas

Merck CEO Ken Frazier Discusses a COVID Cure, Racism, and Why Leaders Need to Walk the Talk

just one generation away from slavery. [div class=infogram-embed data-id=_/J7l1CMM7ky86fk3Wh7qQ][/div] Video Click Here Ken Frazier talks with Tsedal Neeley.) Interview Transcript Tsedal Neeley: Before we talk about vaccines and other... View Details

Keywords: by Staff; Pharmaceutical

Article

Transition to Clean Technology

By: Daron Acemoglu, Ufuk Akcigit, Douglas Hanley and William R. Kerr

We develop a microeconomic model of endogenous growth where clean and dirty technologies compete in production and innovation, in the sense that research can be directed to either clean or dirty technologies. If dirty technologies are more advanced to start with, the... View Details

Keywords: Technological Innovation; Entrepreneurship; Environmental Sustainability; Green Technology Industry

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August 2024
Article

How Do Copayment Coupons Affect Branded Drug Prices and Quantities Purchased?

By: Leemore S. Dafny, Kate Ho and Edward Kong

Drug copayment coupons to reduce patient cost-sharing have become nearly ubiquitous for high-priced brand-name prescription drugs. Medicare bans such coupons on the grounds that they are kickbacks that induce utilization, but they are commonly used by... View Details

Keywords: Prescription Drugs; Coupons; Impact; Health Care and Treatment; Markets; Price; Spending; Pharmaceutical Industry; United States

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Drug copayment coupons to reduce patient cost-sharing have become nearly ubiquitous for high-priced brand-name prescription drugs. Medicare bans such coupons on the grounds that they are kickbacks that induce utilization, but they are commonly used by... View Details

August 2012 (Revised August 2014)
Case

Cancer Treatment Centers of America® (A)

By: Regina E. Herzlinger and Natalie Kindred

Cancer Treatment Centers of America (CTCA), a U.S. network of four privately owned oncology focused factory hospitals, was weighing options for growth. CTCA was entirely cancer focused and specialized in treating patients with complex and advanced-stage cancers, who... View Details

November 2017 (Revised April 2019)
Case

Summa Equity: Building Purpose-Driven Organizations

By: George Serafeim

In 2015, Reynir Indahl left top Nordic private equity firm Altor Equity Partners to found Summa Equity (Summa). After long contemplation following the financial crisis, Indahl was convinced the financial system was producing negative externalities and that the current... View Details

April–June 2022
Other Article

Commentary on 'Causal Decision Making and Causal Eﬀect Estimation Are Not the Same... and Why It Matters'

By: Edward McFowland III

There has been a substantial discussion in various methodological and applied literatures around causal inference; especially in the use of machine learning and statistical models to understand heterogeneity in treatment effects and to make optimal decision... View Details

Keywords: Causal Inference; Treatment Effect Estimation; Treatment Assignment Policy; Human-in-the-loop; Decision Making; Fairness

21 Apr 2013
News

Brazil: The creaking champions

25 Oct 2011
Research & Ideas

Chasing Stars: Why the Mighty Red Sox Struck Out

In the fall of 2009, baseball's Anaheim Angels knocked the Boston Red Sox out of the American League Division Series in a humiliating three straight games. Within a matter of weeks, Sox general manager Theo Epstein had launched one of the... View Details

Keywords: by Carmen Nobel; Sports; Banking

January 2020 (Revised March 2020)
Case

LOLA: Do You Know What's in Your Tampon?

By: Leonard A. Schlesinger and Aldo Sesia

LOLA is a direct-to-consumer (DTC) business launched in 2015. What started as a company to provide women with organic and transparent material-labeled tampons via a subscription model, had, by 2019 evolved to include additional menstrual and sexual wellness products.... View Details

Keywords: Direct-to-consumer; Channels; Disruption; Business Model; Brands and Branding; Internet and the Web; Strategy; Retail Industry; United States; Canada

February 2008
Article

Bandwidth Allocation in Peer-to-Peer File Sharing Networks

By: Albert Creus Mir, Ramon Casadesus-Masanell and Andres Hervas-Drane

We present a model of bandwidth allocation in a stylized peer-to-peer file sharing network. Given an arbitrary population of peers composed of sharers and freeriders, where all peers interconnect to maximize their allocated bandwidth, we derive the expected bandwidth... View Details

Keywords: Information Infrastructure; Resource Allocation

July 2007
Article

A Two-Person Game of Information Transmission

By: Jerry R. Green and Nancy L. Stokey

We consider a statistical decision problem faced by a two player organization whose members may not agree on outcome evaluations and prior probabilities. One player is specialized in gathering information and transmitting it to the other, who takes the decision. This... View Details

Keywords: Game Theory; Cheap Talk; Communication Games; Communication; Information