Publications

06 Mar 2012
First Look

First Look: March 6

and Michael W. Toffel Abstract Mandatory information disclosure regulations seek to create institutional pressure to spur performance improvement. By examining how organizational characteristics moderate... View Details

Keywords: Sean Silverthorne

01 Jun 2001
News

Alejandro Ramirez: A Very Good Time for Mexico

social policy of the new administration. He was then asked to join the new government. He elected instead to return to HBS, a decision he does not regret. “I’ve been fortunate enough to do research with Professor Michael Porter,” Ramirez... View Details

Keywords: Julia Hanna; World Bank; United Nations; Administration of Economic Programs; Government

June 2020
Article

How Scheduling Can Bias Quality Assessment: Evidence from Food Safety Inspections

By: Maria Ibanez and Michael W. Toffel

Accuracy and consistency are critical for inspections to be an effective, fair, and useful tool for assessing risks, quality, and suppliers—and for making decisions based on those assessments. We examine how inspector schedules could introduce bias that erodes... View Details

Keywords: Assessment; Bias; Inspection; Scheduling; Econometric Analysis; Empirical Research; Regulation; Health; Food; Safety; Quality; Performance Consistency; Governing Rules, Regulations, and Reforms

2007
Working Paper

Hedge Fund Investor Activism and Takeovers

By: Robin Greenwood and Michael Schor

We examine long-horizon stock returns around hedge fund activism in a comprehensive sample of 13D filings by portfolio investors between 1993 and 2006. Abnormal returns surrounding investor activism are high for the subset of targets that are... View Details

Keywords: Mergers and Acquisitions; Private Equity; Investment Return; Investment Activism; Investment Portfolio; Corporate Governance

December 2017 (Revised April 2018)
Case

The Children's Hospital of Philadelphia: Network Strategy 2016

By: Michael E. Porter, Thomas W. Feeley and Toyin J. Okanlawon

Children’s Hospital of Philadelphia (CHOP) began as a stand-alone hospital in the heart of downtown Philadelphia in 1855. By 2016 the CHOP Care Network stretched across Pennsylvania, New Jersey, and the New York metropolitan area, providing a wide range of services... View Details

Keywords: Communication; Health Care and Treatment; Service Delivery; Organizational Structure; Networks; Integration; Strategy; Health Industry; Philadelphia

January–February 2023
Article

Data-Driven COVID-19 Vaccine Development for Janssen

By: Dimitris Bertsimas, Michael Lingzhi Li, Xinggang Liu, Jennings Xu and Najat Khan

The COVID-19 pandemic has spurred extensive vaccine research worldwide. One crucial part of vaccine development is the phase III clinical trial that assesses the vaccine for safety and efficacy in the prevention of COVID-19. In this work, we enumerate the first... View Details

Keywords: COVID-19; Health Testing and Trials; Forecasting and Prediction; AI and Machine Learning; Research; Pharmaceutical Industry

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12 Apr 2016
News

The Existential Question Facing the Auto Industry

25 Feb 2014
First Look

First Look: February 25

Publications August 2013 Social Psychological & Personality Science Matchmaking Promotes Happiness By: Anik, Lalin, and Michael I. Norton Abstract—Four studies document and explore the psychology underlying people's proclivity to... View Details

Keywords: Sean Silverthorne

22 Sep 2022
News

The Beauty Guide

Courtesy Michelle Freyre Courtesy Michelle Freyre When Michelle Freyre (MBA 1997) was a brand manager at Neutrogena, Michael McNamara, global president of the beauty brand at the time, asked what she wanted to do with her career. She... View Details

Keywords: Maureen Harmon

06 Nov 2018
First Look

New Research and Ideas, November 6, 2018

Assessment: Evidence from Food Safety Inspections By: Ibanez, Maria, and Michael W. Toffel Abstract—Many production processes are subject to inspection to ensure they meet quality, safety, and environmental standards imposed View Details

Keywords: Dina Gerdeman

April 2024
Article

A Machine Learning Algorithm Predicting Risk of Dilating VUR among Infants with Hydronephrosis Using UTD Classification

By: Hsin-Hsiao Scott Wang, Michael Lingzhi Li, Dylan Cahill, John Panagides, Tanya Logvinenko, Jeanne Chow and Caleb Nelson

Backgrounds: Urinary Tract Dilation (UTD) classification has been designed to be a more objective grading system to evaluate antenatal and post-natal UTD. Due to unclear association between UTD classifications to specific anomalies such as vesico-ureteral reflux (VUR),... View Details

Keywords: Health Disorders; Health Testing and Trials; AI and Machine Learning; Health Industry

2000
Working Paper

The Logic of the First Amendment

By: Clifford G. Holderness, Michael C. Jensen and William H. Meckling

We develop a framework that is applicable to all freedom of expression disputes. Our framework is based on the meaning of freedom which is based on the meaning of scarcity, and which, in turn, is based on the existence of physical incompatibilities. To maximize... View Details

Keywords: Rights; Courts and Trials; Judgments; Property; Conflict and Resolution; United States

SSRN

February 2014 (Revised October 2019)
Case

Should Corporate Profits Be Taxed? (A)

By: Matthew Weinzierl, Katrina Flanagan and Michael Cianellli

Taxing corporations is popular, but why? Corporations do not bear the burden of taxes, people do, and the incidence of the corporate income tax burden is likely to be far different from what many of its supporters assume.
Instructors may also obtain a Teaching... View Details

Keywords: Economic Versus Statutory Incidence; Basics Of Corporate Taxation; Business Ventures; Taxation; Profit

January 2010 (Revised March 2010)
Background Note

A Note on Direct Selling in Developing Economies

By: Michael Chu and Joel Emilio Bregman Segre

Informal and formal direct selling play a particularly important role in developing countries characterized by markets with limited retail sectors. This note explores the practice of direct selling for the company, the sales person, and the consumer, as well as the... View Details

Keywords: Customers; Developing Countries and Economies; Marketing Channels; Marketing Strategy; Emerging Markets; Sales

July 2021
Article

Electronic Trace Data and Legal Outcomes: The Effect of Electronic Medical Records on Malpractice Claim Resolution Time

By: Sam Ransbotham, Eric Overby and Michael C. Jernigan

Information systems generate copious trace data about what individuals do and when they do it. Trace data may affect the resolution of lawsuits by, for example, changing the time needed for legal discovery. Trace data might speed resolution by clarifying what events... View Details

Keywords: Analytics and Data Science; Lawsuits and Litigation; Digital Transformation; Welfare; Health Industry

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September 1994 (Revised January 2004)
Case

Forging the New Salomon

By: Lynn S. Paine and Michael Santoro

Describes Salomon Brothers' recovery from the August 1991 Treasury auction scandal. Details the impact of the firm's disclosure of bidding improprieties and describes how the new management team, led by Warren Buffett and Deryck Maughan, guided the company through the... View Details

Keywords: Crisis Management; Ethics; Organizational Culture; Law; Business or Company Management

December 2016
Article

Fake It Till You Make It: Reputation, Competition, and Yelp Review Fraud

By: Michael Luca and Georgios Zervas

Consumer reviews are now part of everyday decision making. Yet, the credibility of these reviews is fundamentally undermined when businesses commit review fraud, creating fake reviews for themselves or their competitors. We investigate the economic incentives to commit... View Details

Keywords: Ethics; Marketing Reference Programs

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2015
Working Paper

Fake It Till You Make It: Reputation, Competition, and Yelp Review Fraud

By: Michael Luca and Georgios Zervas

Consumer reviews are now part of everyday decision-making. Yet, the credibility of these reviews is fundamentally undermined when businesses commit review fraud, creating fake reviews for themselves or their competitors. We investigate the economic incentives to commit... View Details

Keywords: Information; Competition; Internet and the Web; Ethics; Reputation; Social and Collaborative Networks; Retail Industry; Food and Beverage Industry

SSRN