Publications

13 Mar 2025
HBS Seminar

Sonny Tambe, Wharton

A Causal Test of the Strength of Weak Ties

The strength of weak ties is an influential social-scientific theory that stresses the importance of weak associations (e.g., acquaintance versus close friendship) in influencing the transmission of information through social networks. However, causal tests of... View Details

January 2024
Article

Dog Eat Dog: Balancing Network Effects and Differentiation in a Digital Platform Merger

By: Chiara Farronato, Jessica Fong and Andrey Fradkin

Digital platforms are increasingly the subject of regulatory scrutiny. In comparison to multiple competitors, a single platform may increase consumer welfare if network effects are large or may decrease welfare due to higher prices or reduction in platform variety. We... View Details

Keywords: Platform Differentiation; Digital Platforms; Network Effects; Measurement and Metrics; Mergers and Acquisitions; Outcome or Result

August 2018
Case

Christine Lagarde (C): Managing the IMF

By: Julie Battilana and Carin-Isabel Knoop

This case covers the career of Christine Lagarde from 2011 to 2018 as she takes the helm of a troubled multilateral organization during a time of deepening economic turmoil. As the first female leader of the International Monetary Fund (IMF), and as a non-economist,... View Details

Keywords: Personal Development and Career; Power and Influence; Change Management; Global Range; Gender; Equality and Inequality; Climate Change

Article

Administrative Costs Associated with Physician Billing and Insurance-Related Activities at an Academic Health Care System

By: Phillip Tseng, Robert S. Kaplan, Barak D. Richman, Mahek A. Shah and Kevin A. Schulman

The federal government mandated adoption of certified electronic health record systems (EHR), at least in part, to reduce administrative costs for physicians. This study used time-driven activity-based costing to determine the administrative costs associated with... View Details

Keywords: Health Care and Treatment; Cost Management; Insurance; Problems and Challenges

2017
Chapter

Platforms, Open/User Innovation, and Ecosystems: A Strategic Leadership Perspective

By: Elizabeth J. Altman and Michael Tushman

Platform, open/user innovation, and ecosystem strategies embrace and enable interactions with external entities. Firms pursuing these approaches conduct business and interact with environments differently than those pursuing traditional closed strategies. This chapter... View Details

Keywords: Platforms; Open/user Innovation; Ecosystems; Crowdsourcing; Strategic Leadership; Top Management Teams; CEO Role; Business Strategy; Organizational Change and Adaptation; Leadership; Managerial Roles; Digital Platforms

March 2017 (Revised June 2019)
Case

Mubadala and EBX: To X or to X It?

By: Nori Gerardo Lietz, Ricardo Andrade and Sayiddah Fatima McCree

In April 2012, Mubadala, Abu Dhabi's sovereign wealth fund invested $2 billion in Brazilian conglomerate EBX, believing the company to be undervalued by the public markets. Shortly thereafter, however, EBX and its multiple business lines began to spiral downward. Hani... View Details

Keywords: Sovereign Wealth Funds; Conglomerates; Investing; Corporate Structure; International; Sovereign Finance; Business Conglomerates; Investment; Financing and Loans; Restructuring; Organizational Structure; Economy; Brazil; Abu Dhabi

06 May 2014
First Look

First Look: May 6

economy" industries. They can, but do not necessarily, lead to market tipping, unless they outweigh customers' benefits from differentiation and are accompanied by high switching and multi-homing costs. Network effects create the possibility for View Details

Keywords: Sean Silverthorne

17 Oct 2023
HBS Case

With Subscription Fatigue Setting In, Companies Need to Think Hard About Fees

single flat price, where customers pay a fixed rate at regular intervals no matter how much they use a product or service. A “freemium” option, in which the base tier is free, while other more advanced tiers include escalating charges. View Details

Keywords: by Jay Fitzgerald; Consumer Products; Information; Information Technology

Web

Teaching by the Case Method - Christensen Center for Teaching & Learning

both. Case method teachers learn to balance planning and spontaneity. In practice, they pursue opportunities and "teachable moments" that emerge throughout the discussion, and deftly guide students toward discovery and learning on View Details

Research Summary

National Innovation Systems in the Life Sciences

This is an international comparative study of how institutional contexts shape the process by which science is leveraged into commercial technology. The study explores how variance in corporate governance systems, knowledge- and skill-formation systems, and... View Details

2025
Working Paper

Evaluations Amid Measurement Error: Determining the Optimal Timing for Workplace Interventions

By: Matthew DosSantos DiSorbo, Iavor I. Bojinov and Fiammetta Menchetti

Researchers have embraced factorial experiments to simultaneously evaluate multiple treatments, each with different levels. Typically, in large-scale factorial experiments, the primary objective is identifying the treatment with the largest causal effect, especially... View Details

Keywords: Factorial Designs; Fisher Randomizations; Rank Estimators; Employer Interventions; Causal Inference; Mathematical Methods; Performance Improvement

SSRN

June 2024
Case

Caesars Entertainment: Governance on the Road to Bankruptcy

By: Kristin Mugford

Caesars Entertainment was a large casino operator in the United States that had been purchased in a 2008 leveraged buyout by Apollo and TPG. In January 2015, Caesars Entertainment Operating Company (CEOC), its largest subsidiary, filed for Chapter 11. This set up a... View Details

Keywords: Gaming; Chapter 11; Fraudulent Conveyance; Apollo; TPG; Bankruptcy; Leveraged Buyouts; Restructuring; Capital Structure; Insolvency and Bankruptcy; Private Equity; Financial Management; Lawsuits and Litigation; Negotiation; Games, Gaming, and Gambling; Borrowing and Debt; Entertainment and Recreation Industry; Las Vegas

November 2023
Article

Coalition Cascades: The Politics of Tipping Points in Clean Energy Transitions

By: Jonas Meckling and Nicholas Goedeking

Policy change often involves multiple policy subsystems, as in the case of clean energy transitions. We argue that trans- subsystem policy feedback is a central dynamic in policy change across subsystems. Policy in one subsystem creates ... View Details

Keywords: Policy; Transition; Energy Sources; System

Register to Read

2020
Working Paper

Dog Eat Dog: Balancing Network Effects and Differentiation in a Digital Platform Merger

By: Chiara Farronato, Jessica Fong and Andrey Fradkin

Digital platforms are increasingly the subject of regulatory scrutiny. In comparison to multiple competitors, a single platform may increase consumer welfare if network effects are large or may decrease welfare due to higher prices or reduction in platform variety. We... View Details

Keywords: Platform Differentiation; Digital Platforms; Network Effects; Measurement and Metrics; Mergers and Acquisitions; Outcome or Result

2014
Article

The Governance of Social Enterprises: Mission Drift and Accountability Challenges in Hybrid Organizations

By: Alnoor Ebrahim, Julie Battilana and Johanna Mair

We examine the challenges of governance facing organizations that pursue a social mission through the use of market mechanisms. These hybrid organizations, often referred to as social enterprises, combine aspects of both charity and business at their core. In this... View Details

Keywords: Governance; Hybrid Organizations; Nonprofit; Performance Measurement; Legal Form; Agency Theory; Stakeholder Management; Mission and Purpose; Social Enterprise; Corporate Accountability

Other Article

The Market That Wasn't: The Non-emergence of the Online Grocery Category

By: Chad Navis, Greg Fisher, Ryan Raffaelli and Mary Ann Glynn

We examine the non-emergence of a potential new market category. In the late 1990s the entrepreneurial firms that attempted to sell groceries online attracted significant resources, made meaningful technological advancements and generated immense publicity, yet online... View Details

Keywords: Internet and the Web; Food; Emerging Markets; Service Industry; Food and Beverage Industry

January–February 2012
Article

Do You Need a New Product-Development Strategy?

By: Alan MacCormack, W. Crandall, P. Toft and P. Henderson

Many firms rely on a single new-product development process for all projects. But designing new products for different business contexts requires that a firm deploy different new-product development processes. Products designed for stable and mature end-user markets... View Details

Keywords: Strategy; Product Development

September 2011
Supplement

Expansion at Narayana Hrudayalaya

By: Tarun Khanna and Tanya Bijlani

Narayana Hrudayalaya has expanded into a multi-specialty health city in Bangalore, with a 25-acre campus that offers complex tertiary care procedures ranging from orthopedics to cancer care. In 2008, NH raised private equity from JP Morgan and Pinebridge Investments to... View Details

Keywords: Investment; Price; Health Care and Treatment; Emerging Markets; Social Enterprise; Expansion; Health Industry; Bangalore; Cayman Islands; Miami