Publications
Publications
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- All HBS Web
(975)
- Faculty Publications (328)
- Article
A 680,000-Person Megastudy of Nudges to Encourage Vaccination in Pharmacies
By: Katherine L. Milkman, Linnea Gandhi, Mitesh S. Patel, Heather N. Graci, Dena M. Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Jake Rothschild, Jonathan E. Bogard, Ilana Brody, Christopher F. Chabris, Edward Chang, Gretchen B. Chapman, Jennifer E. Dannals, Noah J. Goldstein, Amir Goren, Hal Hershfield, Alex Hirsch, Jillian Hmurovic, Samantha Horn, Dean Karlan, Ariella S. Kristal, Cait Lamberton, Michael N. Meyer, Allison H. Oakes, Maurice E. Schweitzer, Maheen Shermohammed, Jaochim H. Talloen, Caleb Warren, Ashley V. Whillans, Kuldeep N. Yadav, Julian J. Zlatev, Ron Berman, Chalanda N. Evans, Rahul Ladhania, Jens Ludwig, Nina Mazar, Sendhil Mullainathan, Christopher K. Snider, Jann Spiess, Eli Tsukayama, Lyle Ungar, Christophe Van den Bulte, Kevin G. Volpp and Angela L. Duckworth
Encouraging vaccination is a pressing policy problem. To assess whether text-based reminders can encourage pharmacy vaccination and what kinds of messages work best, we conducted a megastudy. We randomly assigned 689,693 Walmart pharmacy patients to receive one of 22... View Details
- 25 Jan 2022
- Interview
How Footwear Startup Allbirds Is Decarbonizing Fashion
- December 2021
- Teaching Note
Intenseye: Powering Workplace Health and Safety with AI
By: Michael W. Toffel and Youssef Abdel Aal
Teaching Note for HBS Case No. 622-037. View Details
- December 2021
- Supplement
Intenseye: Powering Workplace Health and Safety with AI – PowerPoint Supplement
By: Michael W. Toffel and Youssef Abdel Aal
- October 2021
- Article
Shareholder Activism and Firms' Voluntary Disclosure of Climate Change Risks
By: Caroline Flammer, Michael W. Toffel and Kala Viswanathan
This paper examines whether—in the absence of mandated disclosure requirements—shareholder activism can elicit greater disclosure of firms’ exposure to climate change risks. We find that environmental shareholder activism increases the voluntary disclosure of climate... View Details
Keywords: Transparency; Reporting; Shareholder Engagement; Shareholder Activism; Climate Change; Risk and Uncertainty; Environmental Management; Investment Activism; Corporate Disclosure; Communication Strategy; Information Publishing; Measurement and Metrics; Corporate Social Responsibility and Impact; Problems and Challenges; United States
- August 2021 (Revised October 2024)
- Case
Allbirds: Decarbonizing Fashion (A)
By: Michael W. Toffel, Kenneth P. Pucker and Eren Kuzucu
The Allbirds: Decarbonizing Fashion (A) case introduces Allbirds as a footwear startup not only focused on simple design, comfort, and sustainable natural materials but on decarbonizing the wider fashion industry. Background material highlights the growing... View Details
Keywords: Decarbonization; Climate Impact; Environmental Strategy; Innovation; Product Design; Supply Chain Management; Innovation Strategy; Innovation and Management; Product Development; Climate Change; Environmental Management; Environmental Sustainability; Apparel and Accessories Industry; Fashion Industry; United States; California
- August 2021 (Revised April 2022)
- Case
Intenseye: Powering Workplace Health and Safety with AI
By: Michael W. Toffel and Youssef Abdel Aal
Intenseye was a Turkey-based technology startup that deployed machine learning algorithms to workplace camera feeds in order to identify unsafe worker actions and unsafe working conditions, in order to help improve worker safety. The case describes how Intenseye’s... View Details
- July–August 2021
- Article
Surfacing the Submerged State: Operational Transparency Increases Trust in and Engagement with Government
By: Ryan W. Buell, Ethan Porter and Michael I. Norton
Problem definition: As trust in government reaches historic lows, frustration with government performance approaches record highs.
Academic/practical relevance: We propose that in co-productive settings like government services, peoples’ trust and... View Details
- 18 May 2021
- Panel Discussion
Lloyd's Register Supply Chain Webinar: What Trends Are Influencing the Future of Supply Chain Assurance?
- April 22, 2021
- Article
Shareholders Are Pressing for Climate Risk Disclosures. That's Good for Everyone
By: Caroline Flammer, Michael W. Toffel and Kala Viswanathan
Does shareholder activism induce firms to voluntarily disclose climate change risks? And how do markets respond to these disclosures? New research finds that the extent of climate-risk disclosure increases by approximately 4.6% for each environment-related proposal... View Details
- Article
Manage the Suppliers That Could Harm Your Brand: Know When to Avoid, Engage, or Drop Them
By: Jodi L Short and Michael W. Toffel
The pandemic has placed a new spotlight on working conditions in factories that supply global companies. To avert problems, firms often impose codes of conduct on their suppliers and perform audits to assess compliance. Do these measures help identify unethical... View Details
Keywords: Auditing; Agency Cost; Quality And Safety; Quality Management System; Quality Management; Unions; Environmental Management; Globalization; Goods and Commodities; Governance; Labor; Labor Unions; Wages; Working Conditions; Operations; Supply Chain; Safety; Quality; China; Bangladesh; Asia; Pakistan
- 8 Jan 2021
- Interview
Talk Green, Play Dirty: Corporate America's Mixed Record
By: Michael W. Toffel and Greg Dalton
- September 2020 (Revised September 2021)
- Case
Student Success at Georgia State University (A)
By: Michael W. Toffel, Robin Mendelson and Julia Kelley
Georgia State University had developed a reputation for driving student success by nearly doubling its graduation rate for students of all racial, ethnic, and socioeconomic backgrounds. It did so while growing its student body and the proportion of Black/African... View Details
Keywords: Education; Higher Education; Learning; Curriculum and Courses; Demographics; Diversity; Ethnicity; Income; Race; Leadership; Goals and Objectives; Measurement and Metrics; Operations; Organizations; Mission and Purpose; Organizational Culture; Outcome or Result; Performance; Performance Effectiveness; Performance Evaluation; Service Operations; Performance Improvement; Planning; Strategic Planning; Social Enterprise; Nonprofit Organizations; Social Issues; Wealth and Poverty; Equality and Inequality; Information Technology; Digital Platforms; Education Industry; Atlanta
- August 2020 (Revised September 2020)
- Technical Note
Assessing Prediction Accuracy of Machine Learning Models
The note introduces a variety of methods to assess the accuracy of machine learning prediction models. The note begins by briefly introducing machine learning, overfitting, training versus test datasets, and cross validation. The following accuracy metrics and tools... View Details
- August 2020
- Technical Note
Comparing Two Groups: Sampling and t-Testing
This note describes sampling and t-tests, two fundamental statistical concepts. View Details
- August 2020
- Article
Improving Working Conditions in Global Supply Chains: The Role of Institutional Environments and Monitoring Program Design
By: Jodi L. Short, Michael W. Toffel and Andrea R. Hugill
Activism seeking to improve labor conditions in global supply chains has led many transnational corporations to adopt codes of conduct and monitor suppliers for compliance. Drawing on thousands of audits conducted by a major social auditor, we identify structural... View Details
- June 18, 2020
- Article
What CEOs Still Haven't Said about Race and Policing
By: Aaron K. Chatterji and Michael W. Toffel
While many CEOs have spoken out to share their thoughts on race and police misconduct in America, they have yet to advocate for policy solutions for police reform, focusing instead on their own corporate and personal values. But lasting change must also involve ... View Details
- June 2020
- Teaching Note
Fossil Fuel Divestment
By: Michael W. Toffel and Sarah Gulick
Teaching note to accompany HBS case 620-093, Fossil Fuel Divestment, by Michael W. Toffel and Sarah Gulick. View Details
- 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