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All HBS Web
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- Faculty Publications (331)
- Article
A Megastudy of Text-Based Nudges Encouraging Patients to Get Vaccinated at an Upcoming Doctor's Appointment
By: Katherine L. Milkman, Mitesh S. Patel, Linnea Gandhi, Heather N. Graci, Dena M. Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Modupe Akinola, John Beshears, Jonathan E. Bogard, Alison Buttenheim, Christopher F. Chabris, Gretchen B. Chapman, James J. Choi, Hengchen Dai, Craig R. Fox, Amir Goren, Matthew D. Hilchey, Jillian Hmurovic, Leslie K. John, Dean Karlan, Melanie Kim, David Laibson, Cait Lamberton, Brigitte C. Madrian, Michelle N. Meyer, Maria Modanu, Jimin Nam, Todd Rogers, Renante Rondina, Silvia Saccardo, Maheen Shermohammed, Dilip Soman, Jehan Sparks, Caleb Warren, Megan Weber, Ron Berman, Chalanda N. Evans, Christopher K. Snider, Eli Tsukayama, Christophe Van den Bulte, Kevin G. Volpp and Angela L. Duckworth
Many Americans fail to get life-saving vaccines each year, and the availability of a vaccine for COVID-19 makes the challenge of encouraging vaccination more urgent than ever. We present a large field experiment (N = 47,306) testing 19 nudges delivered to patients via...
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Keywords:
Vaccination;
COVID-19;
Nudge;
Influenza;
Field Experiment;
Health;
Communication Strategy;
Behavior
Milkman, Katherine L., Mitesh S. Patel, Linnea Gandhi, Heather N. Graci, Dena M. Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Modupe Akinola, John Beshears, Jonathan E. Bogard, Alison Buttenheim, Christopher F. Chabris, Gretchen B. Chapman, James J. Choi, Hengchen Dai, Craig R. Fox, Amir Goren, Matthew D. Hilchey, Jillian Hmurovic, Leslie K. John, Dean Karlan, Melanie Kim, David Laibson, Cait Lamberton, Brigitte C. Madrian, Michelle N. Meyer, Maria Modanu, Jimin Nam, Todd Rogers, Renante Rondina, Silvia Saccardo, Maheen Shermohammed, Dilip Soman, Jehan Sparks, Caleb Warren, Megan Weber, Ron Berman, Chalanda N. Evans, Christopher K. Snider, Eli Tsukayama, Christophe Van den Bulte, Kevin G. Volpp, and Angela L. Duckworth. "A Megastudy of Text-Based Nudges Encouraging Patients to Get Vaccinated at an Upcoming Doctor's Appointment." e2101165118. Proceedings of the National Academy of Sciences 118, no. 20 (May 18, 2021).
- May 2021
- Case
Roku 2021
By: David B. Yoffie and Daniel Fisher
This case is used to explore the strategic concept of "look forward, reason back." Roku in 2021 is trying to figure out the future of television and streaming media. Students are asked to provide a vision for television and streaming media (that is, Look Forward) by...
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Keywords:
Television Entertainment;
Forecasting and Prediction;
Decision Choices and Conditions;
Strategy;
Strategic Planning;
Media and Broadcasting Industry
Yoffie, David B., and Daniel Fisher. "Roku 2021." Harvard Business School Case 721-480, May 2021.
- April 2021
- Teaching Note
Social Media War 2021: Snap vs. Facebook vs. TikTok
By: David B. Yoffie and Daniel Fisher
This teaching note provides analysis and a teaching plan for the Social Media War 2021: Snap vs. Facebook vs. TikTok case.
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- April 2021 (Revised March 2024)
- Case
Social Media War 2021: Snap vs. Facebook vs. TikTok
By: David B. Yoffie and Daniel Fisher
This case explores the competitive war between Snap, Facebook, and TikTok in 2021. The strategic focus is on Snapchat: how should it respond to the emergence of TikTok, and how should it compete with the dominant competitor in its space—Facebook. The case examines...
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Keywords:
Strategy Development;
Competitor Analysis;
Strategy;
Network Effects;
Competitive Strategy;
Decision Choices and Conditions;
Social Media
Yoffie, David B., and Daniel Fisher. "Social Media War 2021: Snap vs. Facebook vs. TikTok." Harvard Business School Case 721-443, April 2021. (Revised March 2024.)
- January 15, 2021
- Article
Social Media Companies Should Self-Regulate. Now
By: Michael A. Cusumano, Annabelle Gawer and David B. Yoffie
We argue that social media firms should ramp up self-regulation of content in 2021. This argument is based on research on numerous industries where firms and/or industry associations devised self-regulatory strategies that successfully limited or forestalled more...
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Keywords:
Self-regulation;
Internet and the Web;
Governing Rules, Regulations, and Reforms;
Business and Government Relations;
Social Media
Cusumano, Michael A., Annabelle Gawer, and David B. Yoffie. "Social Media Companies Should Self-Regulate. Now." Harvard Business Review (website) (January 15, 2021).
- December 2020
- Teaching Note
Apple Inc. in 2020
By: David B. Yoffie
Teaching Note for HBS Case #720-454.
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- 2020
- Chapter
Google, Apple, Facebook, Amazon: Is Winner-Take-All True?
By: David B. Yoffie
Yoffie, David B. "Google, Apple, Facebook, Amazon: Is Winner-Take-All True?" In Sekai saikoho no keiei kyoshitsu [World's Best Management Class]: 17 Lessons in Management from the World's Leading Business Professors, edited by Ayako Hirono, 179–193. Tokyo: Nikkei Business Publications, 2020. (Published in Japanese.)
- August 2020 (Revised June 2021)
- Case
Skillz: Esports and Skill-Based Mobile Gaming
By: Andy Wu, David B. Yoffie and George Gonzalez
Founded in 2012, Skillz offered a platform for mobile app developers to monetize skill-based games via prized tournaments. Skillz had over 20,000 registered developers that had created thousands of Skillz-powered games played by over 30 million registered users...
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Keywords:
Video Games;
Mobile;
Esports;
Applications and Software;
Games, Gaming, and Gambling;
Mobile and Wireless Technology;
Growth and Development Strategy;
Information Technology;
Digital Platforms;
United States
Wu, Andy, David B. Yoffie, and George Gonzalez. "Skillz: Esports and Skill-Based Mobile Gaming." Harvard Business School Case 721-358, August 2020. (Revised June 2021.)
- Article
The Impact of Penalties for Wrong Answers on the Gender Gap in Test Scores
By: Katherine B. Coffman and David Klinowski
Multiple-choice exams play a critical role in university admissions across the world. A key question is whether imposing penalties for wrong answers on these exams deters guessing from women more than men, disadvantaging female test-takers. We consider data from a...
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Coffman, Katherine B., and David Klinowski. "The Impact of Penalties for Wrong Answers on the Gender Gap in Test Scores." Proceedings of the National Academy of Sciences 117, no. 16 (April 21, 2020): 8794–8803.
- April 2020
- Case
TiVo 2020
By: David B. Yoffie and Daniel Fisher
This short case provides an update on TiVo from 2016-2020. The case covers TiVo merger with Rovi, the turnover of several CEOs, and struggles on how to reposition its product business (the digital video recorder).
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Yoffie, David B., and Daniel Fisher. "TiVo 2020." Harvard Business School Case 720-457, April 2020.
- April 2020
- Case
Apple Inc. in 2020
By: David B. Yoffie and Daniel Fisher
After a decade as CEO, Tim Cook is facing one of his biggest strategic transitions of his tenure. While Apple had performed spectacularly well under Cook, Apple's core business was maturing. Sales of iPhones, iPads, and Macs were flat or down. However, Apple's new...
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Keywords:
Innovation;
Market Positioning;
Marketing Implementation;
Planning;
Products;
Strategic Positioning;
Strategy;
Information Technology;
Competitive Strategy;
Technological Innovation;
Competitive Advantage;
Product Positioning;
Communication;
Competition;
Leadership;
Strategic Planning;
Computer Industry;
Telecommunications Industry;
Technology Industry
Yoffie, David B., and Daniel Fisher. "Apple Inc. in 2020." Harvard Business School Case 720-454, April 2020.
- Spring 2020
- Article
The Future of Platforms
By: Michael A. Cusumano, David B. Yoffie and Annabelle Gawer
Platforms power the world’s most valuable companies, but it will get harder and harder to capture and monetize their disruptive potential.
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Cusumano, Michael A., David B. Yoffie, and Annabelle Gawer. "The Future of Platforms." Art. 61304. Special Issue on Disruption 2020. MIT Sloan Management Review 61, no. 3 (Spring 2020).
- February 2020
- Case
Intellectual Ventures Update 2020
By: David B. Yoffie and Daniel Fisher
After raising $6 billion and buying 60,000 patents, Intellectual Venture (IV) was confronted with a changing legal environment. After a number of important legal decisions, including the Supreme Court's so-called "Alice" decision, IV had to shift strategy. IV sold off...
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Keywords:
Intellectual Property;
Strategy;
Innovation and Invention;
Information Technology;
Business Model;
United States
Yoffie, David B., and Daniel Fisher. "Intellectual Ventures Update 2020." Harvard Business School Case 720-438, February 2020.
- December 2019 (Revised February 2024)
- Teaching Note
Ripple: The Business of Crypto and Ripple 2023
By: David B. Yoffie
The case explores Ripple CEO Brad Garlinghouse’s mission to disrupt the global payments industry by leveraging the cryptocurrency XRP. Students will learn about Bitcoin and the blockchain industry, as well as Ripple’s unique crypto business model. The case provides an...
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Keywords:
Payment Systems;
Cryptocurrency;
Bitcoin;
Blockchain;
Fintech;
Business Startups;
Business Model;
Disruption;
Strategy
- December 2019
- Teaching Note
Fixing Facebook: Fake News, Privacy, and Platform Governance
By: David B. Yoffie and Daniel Fisher
Teaching Note for HBS No. 720-400.
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- December 2019
- Article
El negocio de las plataformas
By: Annabelle Gawer, Michael A. Cusumano and David B. Yoffie
Gawer, Annabelle, Michael A. Cusumano, and David B. Yoffie. "El negocio de las plataformas." Harvard Deusto Business Review, no. 295 (December 2019): 6–12.
- May 2019
- Teaching Note
Upwork: Creating the Human Cloud/Upwork in 2019
By: David B. Yoffie
This teaching note serves as a guide to teaching: Upwork: Creating the Human Cloud and Upwork in 2019.
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- May 2019
- Case
Elon Musk's Big Bets Update, 2019
By: David B. Yoffie and Daniel Fisher
This short case provides an update to Elon Musk's strategy and tactical moves with Tesla, Solar City, and SpaceX from 2016-2019.
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Keywords:
Electric Vehicles;
Batteries;
Solar Power;
Execution;
Space Flight;
Tesla;
SolarCity;
SpaceX;
Elon Musk;
Information Technology;
Risk and Uncertainty;
Expansion;
Renewable Energy;
Strategy;
Investment;
Manufacturing Industry;
Green Technology Industry;
Auto Industry;
Aerospace Industry;
Battery Industry
Yoffie, David B., and Daniel Fisher. "Elon Musk's Big Bets Update, 2019." Harvard Business School Case 719-512, May 2019.
- May 2019
- Case
Mobileye Update, 2019
By: David B. Yoffie and Daniel Fisher
Mobileye was an Israeli company, officially headquartered in The Netherlands, which was a Tier 2 supplier to the global automobile industry. This short case updates Mobileye's business performance and strategy, following the acquisition by Intel in 2017.
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Keywords:
Driverless Car;
Competitive Advantage;
Strategy;
Market Entry and Exit;
Technology;
Auto Industry;
Semiconductor Industry;
Technology Industry;
Israel
Yoffie, David B., and Daniel Fisher. "Mobileye Update, 2019." Harvard Business School Case 719-511, May 2019.
- 2019
- Book
The Business of Platforms: Strategy in the Age of Digital Competition, Innovation, and Power
By: Michael A. Cusumano, Annabelle Gawer and David B. Yoffie
The Business of Platforms explores the strategic, economic, and technology management challenges of digital platform businesses. We have five major themes in the book: 1) The world’s most valuable companies are all platforms, in part because platforms have...
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Keywords:
Strategy;
Technology;
Platform;
Internet and the Web;
Management;
Competitive Strategy;
Digital Platforms
Cusumano, Michael A., Annabelle Gawer, and David B. Yoffie. The Business of Platforms: Strategy in the Age of Digital Competition, Innovation, and Power. Harper Business, 2019.