Publications
Publications
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- All HBS Web
(10,444)
- Faculty Publications (1,132)
- January 2023
- Teaching Note
Duolingo: Teaching Languages to the Masses
By: Youngme Moon
Teaching Note for HBS Case 323-016. At the time the case is written, Duolingo is the most popular language learning service in the world. The company has more than 40 million monthly active users, and the company’s total annual revenue has reached $250 million a year.... View Details
- January 2023
- Case
EKI Energy Services: One Billion Carbon Credits
By: George Serafeim
Within nine months from the time of its Initial Public Offering (IPO) in April of 2021, EKI Energy Services (EKI) shares had increased by more than 8,000%. Equally explosive was the growth of the company’s revenues and Earnings Before Interest, Taxes and Depreciation... View Details
- January 2023
- Case
Cleave Therapeutics: Taking a Risk on Oncology Drug Discovery
By: Regina Herzlinger and Brian Walker
What should a successful executive (HBS Baker Scholar) assess as her next move as the CEO of a firm with a promising and yet uncertain new drug? Amy Burroughs’ mandate to successfully commercialize Cleave Therapeutics’ drug for a cancer with no current successful... View Details
- January 2023 (Revised August 2023)
- Case
Nick Saban: Embracing 'The Process' of Sustaining Success
By: Ranjay Gulati and Eppa Rixey
Nick Saban, head coach of the University of Alabama football team from 2007-2022, fielded teams that won 183 of 208 games (88%), including a record-tying six national championships. Saban’s approach to coaching, known to many as “The Process,” and the consistent... View Details
Keywords: Purpose; Leadership And Managing People; Football; Recruiting; Talent Acquisition; Talent And Talent Management; Talent Development And Retention; Organization Change And Adaptation; Organizational Behavior; Sports; Leadership; Leadership Development; Organizational Culture; Organizational Change and Adaptation; Sports Industry; United States
- 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
- December 2022
- Case
Taylor Farms: Adding Value to Fresh Produce
By: José B. Alvarez, Forest L. Reinhardt, Jenyfeer Martinez Buitrago and Pedro Levindo
In October 2022, Bruce Taylor (HBS MBA, 1981), Chairman and CEO of Taylor Farms, the leading producer of salads and healthy fresh foods in the United States, wondered whether this was the right time for Taylor Farms to venture into the Controlled Environment... View Details
- December 2022 (Revised May 2023)
- Case
Iberdrola: Leading the Energy Revolution
By: Juan Alcácer and Emer Moloney
At the end of 2019, Ignacio Galán, the Chairman and CEO of the world's third largest utility, Iberdrola, reflected on his almost 20 years at the company. He managed a portfolio of three very different businesses, each with their own specific opportunities and... View Details
Keywords: Energy; Energy Generation; Energy Sources; Non-Renewable Energy; Renewable Energy; Engineering; Innovation and Management; Innovation Leadership; Innovation Strategy; Technological Innovation; Leadership; Growth and Development Strategy; Market Timing; Industry Growth; Mission and Purpose; Strategy; Energy Industry; Green Technology Industry; Utilities Industry; Transportation Industry; Auto Industry; Spain; United Kingdom; United States; Brazil; Mexico
- December 2022
- Article
Conflicting Interests and the Effect of Fiduciary Duty: Evidence from Variable Annuities
By: Mark Egan, Shan Ge and Johnny Tang
We examine the variable annuity market to study conflicts of interest and the effect of fiduciary duty in brokerage markets. Insurers typically pay brokers higher commissions for selling more expensive annuities. Our results indicate that sales are four times as... View Details
- December 2022
- Article
I Don't 'Recall': The Decision to Delay Innovation Launch to Avoid Costly Product Failure
By: Byungyeon Kim, Oded Koenigsberg and Elie Ofek
Innovations embody novel features or cutting-edge components aimed at delivering desired customer benefits.
Oftentimes, however, we observe the need to recall new products shortly after their introduction. Indeed, a firm
may rush an innovation to market in an attempt... View Details
- 2022
- Article
Investigating the Association Between Telemedicine Use and Timely Follow-Up Care After Acute Cardiovascular Hospital Encounters
By: Mitchell Tang, A Jay Holmgren, Erin E. McElrath, Ankeet S. Bhatt, Anubodh S. Varshney, Simin Gharib Lee, Muthiah Vaduganathan, Dale S. Adler and Robert S. Huckman
Background: Telemedicine use increased dramatically during the COVID-19 pandemic; however, questions remain as to how telemedicine use impacts care.
Objectives: The purpose of this study was to examine the association of increased telemedicine use on rates of... View Details
Objectives: The purpose of this study was to examine the association of increased telemedicine use on rates of... View Details
- November 2022
- Technical Note
Leader Action Orientations
By: Ryan Raffaelli, Akshaya Varghese and Laura Weimer
Leaders are responsible for planning and executing actions that advance organizational goals. As individuals gain career experience, they tend to develop and rely on implicit mental models that shape how they go about “getting things done.” Without knowing it, most... View Details
- November 2022 (Revised April 2023)
- Supplement
HTC and Virtual Reality (B)
By: Andy Wu and Matt Higgins
In April 2023, Cher Wang, CEO and Chairwoman of HTC, reflected on her time as a leader in the virtual reality industry from her office high above Taoyuan City, Taiwan. It had been a roller coaster ride of new product introductions and unexpected challenges for HTC and... View Details
Keywords: VR; Virtual Reality; Strategy; Metaverse; Market Entry and Exit; Competition; Technology Industry; Taiwan; China; United States
- November 2022
- Case
Ajax Health: A New Model for Medical Technology Innovation
By: Regina E. Herzlinger and Ben Creo
This case teaches key success factors for both startup and established MedTech firms. It examines how to structure a firm to maximize innovation and financial returns with organizational structures that better align the incentives for the different skill sets... View Details
- 2022
- Chapter
Buying Time? The Vietnam War and Southeast Asia
By: Mattias Fibiger
This article examines the “buying time thesis”—the idea that the American war in Vietnam bought time for the rest of Southeast Asia to build up political, economic, military, and diplomatic defenses against communism. It finds that there is some truth to claims that... View Details
Keywords: Vietnam War; Impact; Legacy; Geopolitics; War; History; Government and Politics; Southeast Asia
- November–December 2022
- Article
Number One in Formula One: Leadership Lessons from Toto Wolff and Mercedes, the Team behind One of the Greatest Winning Streaks in All of Sports
By: Anita Elberse
Toto Wolff, the team principal for Mercedes-AMG Petronas—arguably the most impressive team in F1 racing history—has led his organization to unparalleled success. Mercedes earned the Constructors’ Championship (for best overall team performance) every year from 2014... View Details
- October 2022 (Revised January 2023)
- Case
Century Bank: Closing Time?
By: Lauren Cohen, Grace Headinger and Bill Kwon
Barry Sloane, second-generation Chairman, President, and CEO of his family’s bank, Century Bank, weighed whether to sell to Eastern Bank. As a small regional bank, Century faced a number of challenging trends, such as digitization and market share decline in the coming... View Details
Keywords: Family Office; Business Exit; Banking; Family; Massachusetts; Boston; United States; Acquisition; Business Exit or Shutdown; Family Business; Family and Family Relationships; Interpersonal Communication; Decision Making; Finance; Banks and Banking; Risk and Uncertainty; Emotions; Banking Industry; Boston; Massachusetts; United States
- October 2022
- Supplement
The SAH Group: The Time is Right, Instructor Spreadsheet
By: Juan Alcacer and Alpana Thapar
In January 2021, Jalila Mezni, CEO of the SAH Group, was preparing to present the company’s future growth plans to its board of directors. The Tunisian company was a leading producer and distributor of personal care and packaged hygiene products. In 2019, it expanded... View Details
- October 2022
- Supplement
The SAH Group: The Time is Right, Spreadsheet Supplement
By: Juan Alcacer and Alpana Thapar
In January 2021, Jalila Mezni, CEO of the SAH Group, was preparing to present the company’s future growth plans to its board of directors. The Tunisian company was a leading producer and distributor of personal care and packaged hygiene products. In 2019, it expanded... View Details
- October 2022
- Article
Revisiting Extraversion and Leadership Emergence: A Social Network Churn Perspective
By: Blaine Landis, Jon M. Jachimowicz, Dan J. Wang and Robert W. Krause
One of the classic relationships in personality psychology is that extraversion is associated with emerging as an informal leader. However, recent findings raise questions about the longevity of extraverted individuals as emergent leaders. Here, we adopt a social... View Details
- September 2022
- Background Note
On CUE: The Quest for Optimal Customer Unit Economics
By: Elie Ofek, Barak Libai and Eitan Muller
Startups are often evaluated by how well they perform on unit economics, defined as the ratio of a customer’s lifetime value (LTV) to acquisition costs (CAC). A common target for unit economics, advocated by many VCs and analysts, is 3:1 (i.e., LTV/CAC=3). While there... View Details