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- Article
Faith and Assimilation: Italian Immigrants in the U.S.
By: Stefano Gagliarducci and Marco Tabellini
How do ethnic religious organizations influence immigrant assimilation? To answer this question, we assemble novel data from the Catholic directories to measure the presence of Italian Catholic churches in the US between 1890 and 1920, when four million Italians moved... View Details
- 2025
- Working Paper
Rethinking Volume
By: Philippe van der Beck, Lorenzo Bretscher and Zhiyu Julie Fu
Gross trading volumes in financial markets are large and far exceed return volatility. In contrast, “net volume”—trading from persistent portfolio reallocations—is substantially lower, as it excludes transitory round-trip trades. This observation reveals a fundamental... View Details
- July 2025
- Article
Digital Lending and Financial Well-Being: Through the Lens of Mobile Phone Data
By: AJ Chen, Omri Even-Tov, Jung Koo Kang and Regina Wittenberg-Moerman
To mitigate information asymmetry about borrowers in developing economies, digital lenders use machine-learning algorithms and nontraditional data from borrowers’ mobile devices. Consequently, digital lenders have managed to expand access to credit for millions of... View Details
- 2025
- Working Paper
How Does Wage Inequality Affect the Labor Movement
By: Barbara Biasi, Zoë B. Cullen, Julia H. Gilman and Nina Roussille
This paper provides causal evidence on how wage inequality among workers affects the labor movement using three complementary research designs: a vignette experiment with union organizers, a natural policy experiment that increased wage inequality among Wisconsin... View Details
- July 2025
- Module Note
Supply and Demand for Strategists
By: Quan Le
This module note introduces students to the foundational microeconomic principles of supply and demand. It uses the example of an aluminum plant (specifically, production quantity and shutdown decisions) to discuss short-run vs. long-run decisions, marginal costs, sunk... View Details
Keywords: Business Exit or Shutdown; Business or Company Management; Business Strategy; Competition; Competitive Advantage; Cost of Capital; Cost vs Benefits; Decision Making; Decisions; Demand and Consumers; Economics; Economic Systems; For-Profit Firms; Market Entry and Exit; Market Participation; Markets; Metals and Minerals; Microeconomics; Price; Revenue; Strategy; Supply and Industry; Manufacturing Industry
- May 2025
- Article
Punitive but Discerning: Reputation Can Fuel Ambiguously-Deserved Punishment, but Does Not Erode Sensitivity to Nuance
By: Jillian J. Jordan and Nour S. Kteily
The desire to appear virtuous can motivate people to punish wrongdoers, a desirable outcome when punishment is clearly deserved. Yet claims that “virtue signaling” is fueling a culture of outrage suggest that reputation concerns may inspire even potentially unmerited... View Details
- 2025
- Working Paper
Heterogeneous Beliefs and Stock Market Fluctuations
By: Odhrain McCarthy and Sebastian Hillenbrand
This paper examines the role of heterogeneous investor beliefs in explaining stock market puzzles. Using survey data, we show that individual investors and investment professionals, such as equity analysts and strategists, form distinct beliefs. These groups rely on... View Details
- Summer 2025
- Article
Time Well Spent: A New Way to Value Time Could Change Your Life
By: Leslie Perlow and Salvatore J Affinito
When individuals engage in fulfilling activities outside of work, they perform better on the job, but simply encouraging work-life balance doesn’t help with hour-by-hour time management. A new tool for measuring the subjective value of time for individuals as it varies... View Details
- 2025
- Working Paper
Who Ends Up at Jobs in Impact Investing?
By: Shawn Cole, Marcus Sander and Jonah Zahnd
As the impact investing industry has grown, so too has students’ desire to find employment in jobs tasked with the dual mandate of creating financial and social or environmental returns. There is to date relatively little information available on employment in the... View Details
- May 2025
- Teaching Note
The VideaHealth AI Factory: CEO Florian Hillen on Speed, Scale, and Innovation
By: Tsedal Neeley
Teaching Note for HBS Case No. 425-720. Florian Hillen, co-founder and CEO of VideaHealth, a startup using artificial intelligence (AI) to detect dental conditions on x-rays, spent the early years of his company laying the groundwork for an AI factory. This AI factory,... View Details
- May 2025
- Case
Windsurf and the AI Code Assistant Market
By: Suraj Srinivasan, Sudhanshu Nath Mishra and Radhika Kak
In April 2025, the founding team of Windsurf, an AI start-up specializing in code generation gathered in Mountain View, California, to assess its remarkable year of growth. The company had scaled from a niche GitHub Copilot alternative to a breakout player with over... View Details
- April 2025 (Revised June 2025)
- Supplement
Arla Foods: Data-Driven Decarbonization (A) and (B) PowerPoint Supplement
By: Michael Parzen, Michael W. Toffel and Susan Pinckney
The case describes Arla’s history, in particular its climate change mitigation efforts, and how it implemented a price incentive system to motivate individual farms to implement scope 1 greenhouse gas emissions mitigation measures and receive a higher milk price. The... View Details
Keywords: Dairy Industry; Animal-Based Agribusiness; Analysis; Climate Change; Environmental Sustainability; Price; Cooperative Ownership; Motivation and Incentives; Food and Beverage Industry; Agriculture and Agribusiness Industry; Europe; European Union; United Kingdom; Germany; Denmark; Sweden; Netherlands; Luxembourg; Belgium
- April 2025
- Article
Buying (Quality) Time Predicts Relationship Satisfaction
By: A.V. Whillans, Jessie Pow and Joe J. Gladstone
Seven studies examine the association between time-saving purchases (e.g., housecleaning and meal delivery services) and relationship satisfaction. Study 1 uses an eleven-year longitudinal panel survey to show that increases in time-saving purchases predict long-term... View Details
- April 2025
- Article
Corporate Ownership and ESG Performance
By: Belén Villalonga, Peter Tufano and Boya Wang
Using a sample of 3083 firms from 62 countries over 18 years, we analyze how the structure and identity of firms' material owners influence their Environmental, Social, and Governance (ESG) performance. We find that firms with founding families or other individual... View Details
- April 2025
- Article
Gender and Preferences for Performance Feedback
By: Katherine Baldiga Coffman and David Klinowski
Across multiple studies, we investigate whether there are gender differences in preferences for receiving performance feedback. We vary many features of the feedback context: whether the performance task is a cognitive test or a mock interview, whether the feedback is... View Details
- 2025
- Working Paper
Performance Capital Flows in DC Pensions
By: Bryan Gutierrez Cortez, Victoria Ivashina and Juliana Salomao
Are defined contribution (DC) pension funds' capital flows sensitive to performance? We examine pressures from individual account holders who can switch their pension managers. Using novel data on retirement accounts for nearly 10 million individuals, we analyze... View Details
- 2025
- Working Paper
The Cybernetic Teammate: A Field Experiment on Generative AI Reshaping Teamwork and Expertise
By: Fabrizio Dell'Acqua, Charles Ayoubi, Hila Lifshitz, Raffaella Sadun, Ethan Mollick, Lilach Mollick, Yi Han, Jeff Goldman, Hari Nair, Stew Taub and Karim R. Lakhani
We examine how artificial intelligence transforms the core pillars of collaboration—
performance, expertise sharing, and social engagement—through a pre-registered field
experiment with 776 professionals at Procter & Gamble, a global consumer packaged goods
company.... View Details
- March 2025
- Case
Metaphysic AI: Rethinking the Value of Human Expertise
By: Zoë B. Cullen, Shikhar Ghosh and Shweta Bagai
In early 2025, Thomas Graham, CEO of Metaphysic, a leading AI generative video company confronted fundamental questions about who should control digital identity in a world where AI could perfectly recreate human likeness. Founded in 2021, Metaphysic first rose to fame... View Details
- March 10, 2025
- Article
How Gen AI Could Change the Value of Expertise
By: Joseph Fuller, Matt Sigelman and Michael Fenlon
In the near future, gen AI is likely to affect some 50 million jobs, automating away elements of some jobs and augmenting workers’ abilities in others. The extent of those changes will compel companies to reshape their organizational structures and rethink their talent... View Details
- March 2025
- Article
Boomerasking: Answering Your Own Questions
By: Alison Wood Brooks and Michael Yeomans
Humans spend much of their lives in conversation, where they tend to hold many simultaneous motives. We examine two fundamental desires: to be responsive to a partner and to disclose about oneself. We introduce one pervasive way people attempt to reconcile these... View Details