Publications
Publications
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- Faculty Publications (3,166)
Michael
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- February 2025
- Case
Abiomed: Clinical Trials and Tribulations
By: Satish Tadikonda, Faith Robertson and William Marks
After receiving 510(k) clearance for the Impella 2.5 device, Abiomed had proceeded to conduct a premarket approval (PMA) process as well to prove clinical superiority, earn greater protection, and extend commercial runway. However, in the middle of the clinical trial... View Details
- 2025
- Article
Emotion Regulation Contagion Drives Reduction in Negative Intergroup Emotions
By: Michael Pinus, Yajun Cao, Eran Halperin, Alin Coman, James J. Gross and Amit Goldenberg
When emotions occur in groups, they sometimes impact group behavior in undesired ways. Reducing group’s emotions with emotion regulation interventions can be helpful, but may also be a challenge, because treating every person in the group is often infeasible. One... View Details
- January 2025
- Teaching Note
New Belgium Brewing and Climate Change
By: Michael W. Toffel, Kenneth P. Pucker and Michael Norris
Teaching Note for HBS Case No. 624-069. View Details
- January 2025
- Teaching Note
Vytal: Packaging-as-a-Service
By: George Serafeim, Michael W. Toffel and Stacy Straaberg
Teaching Note for HBS Case No. 124-007. The Germany-based startup Vytal operated the largest digital-native reusable packaging-as-a-service network globally, having raised nearly €15 million, established a large network of restaurant partners, and prevented the use of... View Details
Keywords: Environmental Sustainability; Innovation and Invention; Business Growth and Maturation; Growth and Development Strategy; Business Startups; Resource Allocation; Risk Management; Adoption; Strategy; Performance Productivity; Service Delivery; Service Operations; Supply Chain; Distribution; Entrepreneurship; Climate Change; Business Model; Governing Rules, Regulations, and Reforms; Profit; Financing and Loans; Expansion; Green Technology Industry; Service Industry; Retail Industry; Germany; Europe
- January 2025
- Article
Communication Within Firms: Evidence from CEO Turnovers
By: Stephen Michael Impink, Andrea Prat and Raffaella Sadun
This paper uses novel, firm-level communication measures derived from communications metadata several months before and after a CEO transition for 102 firms to study whether and how this organizational event is reflected in employees’ communication flows. We find that... View Details
- 2025
- Article
Statistical Inference for Heterogeneous Treatment Effects Discovered by Generic Machine Learning in Randomized Experiments
By: Kosuke Imai and Michael Lingzhi Li
Researchers are increasingly turning to machine learning (ML) algorithms to investigate causal heterogeneity in randomized experiments. Despite their promise, ML algorithms may fail to accurately ascertain heterogeneous treatment effects under practical settings with... View Details
- November–December 2024
- Article
Why Employees Quit
By: Ethan Bernstein, Michael B. Horn and Bob Moesta
The so-called war for talent is still raging. But in that fight, employers continue to rely on the same hiring and retention strategies they’ve been using for decades. Why? Because they’ve been so focused on challenges such as poaching by industry rivals, competing in... View Details
- November 2024
- Supplement
Allbirds: Decarbonizing Fashion (A) and (B) Video Supplement
By: Michael W. Toffel, Kenneth P. Pucker and Stacy Straaberg
- November 2024
- Case
Dr. Bombay Ice Cream
By: William R. Kerr, Alexis Brownell and Michael Liu
This case examines the creation, launch, and rapid growth of Dr. Bombay Ice Cream, a joint venture between Happi Co., a consumer packaged goods incubator, and entertainment mogul Snoop Dogg, with his son, Cordell Broadus. The brand was inspired by a Bored Ape Yacht... View Details
- November 2024
- Article
Perceptions About Monetary Policy
By: Michael D. Bauer, Carolin Pflueger and Adi Sunderam
We estimate perceptions about the Federal Reserve’s monetary policy rule from panel data on professional forecasts of interest rates and macroeconomic conditions. The perceived dependence of the federal funds rate on economic conditions varies substantially over time,... View Details
- October 2024
- Case
Grain Management
By: Archie Jones, Michael Norris, Alliyah Gary and Chelsea Grain-Jefferson
- October 2024
- Technical Note
Prompt Engineering
By: Michael Parzen and Jo Ellery
This note covers the basics of prompt engineering, a key tool for making use of modern generative AI. We discuss the principles of prompt engineering and illustrate these principles with techniques for asking questions. We further list the types of prompts that can be... View Details
- October 2024
- Article
Medicare Part D Protected-Class Policy Is Associated with Lower Drug Rebates
By: Pragya Kakani, Michael Anne Kyle, Amitabh Chandra and Luca Maini
Medicare Part D does not allow plans to exclude drugs in six protected classes from their formularies, which may limit plans’ ability to negotiate rebates and lead to higher spending. We estimated the association between protected-class status, US-level estimated... View Details