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- August 5, 2025
- Article
Data-driven Equation Discovery Reveals Nonlinear Reinforcement Learning in Humans
By: Kyle J. LaFollette, Janni Yuval, Roey Schurr, David Melnikoff and Amit Goldenberg
Computational models of reinforcement learning (RL) have significantly contributed to our understanding of human behavior and decision-making. Traditional RL models, however, often adopt a linear approach to updating reward expectations, potentially oversimplifying the... View Details
- 2025
- Working Paper
Emotional Manipulation by AI Companions
By: Julian De Freitas, Zeliha Oğuz-Uğuralp and Ahmet Kaan-Uğuralp
AI-companion apps such as Replika, Chai, and Character.ai promise relational benefits—yet many boast session lengths that rival gaming platforms while suffering high long-run churn. What conversational design features increase consumer engagement, and what trade-offs... View Details
- August 2025
- Article
Revenue Collapses and the Consumption of Small Business Owners in the COVID-19 Pandemic
By: Olivia S. Kim, Jonathan A. Parker and Antoinette Schoar
Using financial account data linking small businesses to their owner households, we examine how business owners’ consumption responded to changes in business revenues during the COVID-19 crisis. In the first two months following the National Emergency, business... View Details
- July 2025
- Teaching Note
Greenwood Online: A Fin-Tech Service for Culture and Community
By: James Riley and Bernal Cortés
In 2020, Ryan Glover and Paul Judge launched Greenwood, a fintech startup designed to counter systemic racial discrimination in the American banking ecosystem by offering accessible financial services tailored to Black and Brown communities, but available to all.... View Details
- July 2025
- Case
Greenwood Online: A Fin-Tech Service for Culture and Community (A)
By: James Riley and Bernal Cortés
In 2020, Ryan Glover and Paul Judge launched Greenwood, a fintech startup designed to counter systemic racial discrimination in the American banking ecosystem by offering accessible financial services tailored to Black and Brown communities, but available to all.... View Details
- July 2025
- Case
Greenwood Online: A Fin-Tech Service for Culture and Community (B)
By: James Riley and Bernal Cortés
This B case follows Greenwood’s development after launch, including its decision to partner with a White-owned bank for backend support and its rapid growth despite that controversial choice. It traces the company’s scaling efforts, major fundraising rounds,... View Details
- July 2025
- Case
Toilets for the Underserved: The SURT Commercialization Challenge
By: Maria P. Roche, Anne Marie Knott and Alexander Oettl
In 2021, a breakthrough in sanitation technology developed under the Gates Foundation’s “Reinvent the Toilet” initiative stood ready for commercialization. The Single User Reinvented Toilet (SURT), engineered by Dr. Shannon Yee, offered an off-grid, self-contained... View Details
Keywords: Technological Innovation; Commercialization; Social Issues; Social Enterprise; Public Sector; Private Sector; Market Entry and Exit; Strategic Planning; Engineering; Infrastructure; Innovation Strategy; Utilities Industry; Consumer Products Industry; United States; South Africa; India; France
- Article
Using Gen AI for Early-Stage Market Research
By: James Brand, Ayelet Israeli and Donald Ngwe
Generative AI, particularly large language models (LLMs), offers a promising new tool for early-stage market research by simulating customer responses to product concepts. This can allow companies to draw conclusions similar to those they’d obtain by surveying... View Details
- July 2025
- Teaching Note
Designed for Purpose: “Never a Failure. Always a Lesson”
By: James Riley and Andrea Dorbu
In 2017, Rihanna launched Fenty Beauty under LVMH, disrupting the cosmetics industry with an inclusive 'Beauty for All' strategy that emphasized accessibility across skin tones. The brand’s success was followed by the launch of Savage X Fenty, a lingerie line upholding... View Details
- July 2025
- Case
Designed for Purpose: “Never a Failure. Always a Lesson”
By: James Riley and Andrea Dorbu
In 2017, Rihanna launched Fenty Beauty under LVMH, disrupting the cosmetics industry with an inclusive 'Beauty for All' strategy that emphasized accessibility across skin tones. The brand’s success was followed by the launch of Savage X Fenty, a lingerie line upholding... View Details
- 2025
- Working Paper
In Privacy We Trust: The Effect of Privacy Regulations on Data Sharing Behavior
By: Ozge Demirci, Ayelet Israeli and Eva Ascarza
This paper studies the impact of privacy policies on consumer data-sharing behavior, focusing on policy changes in California and Virginia that took effect in 2023. Using data from a leading customer engagement app in the United States, where users upload shopping... View Details
Keywords: Privacy; Privacy Regulation; Data Sharing; Digital Platforms; Policy; Surveys; Behavior; Public Opinion; California; Virginia
- 2025
- Working Paper
Designing Consent: Choice Architecture and Consumer Welfare in Data Sharing
By: Chiara Farronato, Audrey Fradkin and Tesary Lin
We study the welfare consequences of choice architecture for online privacy using a field experiment that randomizes cookie consent banners. We study three ways in which firms or policymakers can influence choices: (1) nudging users through banner design to encourage... View Details
- July–August 2025
- Article
Don’t Let an AI Failure Harm Your Brand
How companies market their AI systems affects the repercussions they face when their products fail. Marketers must promote their AI products with potential failure in mind. To do that, they must first understand consumers’ unique attitudes toward AI. Marketers who... View Details
- July 2025
- Article
Extraverts Reap Greater Social Rewards from Passion Because They Express Passion More Frequently and More Diversely
By: Kai Krautter, Anabel Büchner and Jon M. Jachimowicz
Passion is stereotypically expressed through animated facial expressions, energetic body movements, varied tone, and pitch—and met with interpersonal benefits. However, these capture only a subset of passion expressions that are more common for extraverts. Indeed, in... View Details
- July 2025
- Article
On the Economic Origins of Concerns Over Women’s Chastity
By: Anke Becker
This paper studies the origins and function of customs and norms that intend to keep women from being promiscuous. Using large-scale survey data from more than 100 countries, I test the anthropological theory that a particular form of preindustrial... 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
- June 2025
- Case
Parque del Sendero: Repositioning in the Death Care Industry in Chile
By: Jill Avery, Andres Cuneo and Marco Bertini
Facing changing consumer behavior and shifting industry conditions, Parque del Sendero, one of largest networks of cemeteries in Chile, considers repositioning its products to appeal to a broader swath of Chilean customers to fuel growth and a more profitable business... 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
- June 2025 (Revised July 2025)
- Case
Full-Funnel Advertising on TikTok
By: Jeremy Yang, Ayelet Israeli and Alexis Lefort
In 2025 TikTok is working to grow its brand and performance advertising business, along with a new integrated full-funnel solution. As an emerging media platform with unique ad formats and user behavior in a privacy-first environment, TikTok faces both significant... View Details
- Spring 2025
- Article
An Insider’s Perspective on How to Reduce Fraud in the Social Sciences
By: Max Bazerman
I will describe how a fraudulent paper developed and offer insights into the institutional changes that are needed. I was a co-author on a paper described as a “clusterfake” due to at least two frauds allegedly occurring in the same paper. I will use my knowledge of... View Details