Publications

29 Aug 2013
Working Paper Summaries

X-CAPM: An Extrapolative Capital Asset Pricing Model

Keywords: by Nicholas Barberis, Robin Greenwood, Lawrence Jin & Andrei Shleifer

Research Summary

Models of optimal experience (flow)

Flow is a state of profound task-absorption, involvement, and intrinsic enjoyment that makes the person feel one with the activity. Csikszentmihalyi's Flow Theory states that flow is more likely to occur in situations in which the person feels that the activity is very... View Details

January 2003 (Revised August 2003)
Case

General Mills and the Hawthorne Huddle (A)

Examines the role of General Mills in the formation and leadership of the Hawthorne Huddle. The Huddle was in the Hawthorne neighborhood in Northern Minneapolis, which in 1997 was plagued with high crime and poverty. The Huddle served as a forum, held the first... View Details

Keywords: Leadership; Corporate Social Responsibility and Impact; Management Succession; Social Issues; Consumer Products Industry; Minneapolis

August 2019
Article

When and How to Diversify—A Multicategory Utility Model for Personalized Content Recommendation

By: Yicheng Song, Nachiketa Sahoo and Elie Ofek

Sometimes we desire change, a break from the same or an opportunity to fulfill different aspects of our needs. Noting that consumers seek variety, several approaches have been developed to diversify items recommended by personalized recommender systems. However,... View Details

Keywords: Recommender Systems; Personalization; Recommendation Diversity; Variety Seeking; Collaborative Filtering; Consumer Utility Models; Digital Media; Clickstream Analysis; Learning-to-rank; Consumer Behavior; Media; Customization and Personalization; Strategy; Mathematical Methods

Article

Pattern Detection in the Activation Space for Identifying Synthesized Content

By: Celia Cintas, Skyler Speakman, Girmaw Abebe Tadesse, Victor Akinwande, Edward McFowland III and Komminist Weldemariam

Generative Adversarial Networks (GANs) have recently achieved unprecedented success in photo-realistic image synthesis from low-dimensional random noise. The ability to synthesize high-quality content at a large scale brings potential risks as the generated samples may... View Details

Keywords: Subset Scanning; Generative Models; Synthetic Content Detection

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July 2023
Supplement

Honeycomb (B): Jumping on The Generative AI Bandwagon?

By: Jeffrey J. Bussgang and Kumba Sennaar

Honeycomb, an audio app enabling users to record stories and save family memories, considers pivoting to embrace generative AI. What should the co-founders business model look like if they pursued this new direction? View Details

Keywords: Entrepreneurship; Venture Capital; Operations; Business Startups; Business Model; AI and Machine Learning; Technology Industry; United States

2014
Article

Paying It Forward: Generalized Reciprocity and the Limits of Generosity

By: Kurt Gray, Adrian F. Ward and Michael I. Norton

When people are the victims of greed or recipients of generosity, their first impulse is often to pay back that behavior in kind. What happens when people cannot reciprocate, but instead have the chance to be cruel or kind to someone entirely different—to pay it... View Details

Keywords: Moral Sensibility; Behavior; Situation or Environment; Attitudes

September 2023 (Revised January 2024)
Case

AI21 Labs in 2023: Strategy for Generative AI

By: David Yoffie, Orna Dan and Elena Corsi

Israeli generative artificial intelligence company AI21 Labs was founded in 2017 to realize the vision of true machine intelligence. It sought to reinvent writing and reading and in 2020 it launched Wordtune, an app using GenAI software to offer alternate text... View Details

Keywords: Decision Making; AI and Machine Learning; Innovation Strategy; Growth and Development Strategy; Applications and Software; Competitive Strategy; Technology Industry; Israel

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Article

Scenario Generation for Long Run Interest Rate Risk Assessment

By: Robert F. Engle, Guillaume Roussellet and Emil N. Siriwardane

We propose a statistical model of the term structure of U.S. treasury yields tailored for long-term probability-based scenario generation and forecasts. Our model is easy to estimate and is able to simultaneously reproduce the positivity, persistence, and factor... View Details

Keywords: Forecasting; Stress Testing; Interest Rates; Forecasting and Prediction; Risk Management; United States

2023
Article

Which Models Have Perceptually-Aligned Gradients? An Explanation via Off-Manifold Robustness

By: Suraj Srinivas, Sebastian Bordt and Himabindu Lakkaraju

One of the remarkable properties of robust computer vision models is that their input-gradients are often aligned with human perception, referred to in the literature as perceptually-aligned gradients (PAGs). Despite only being trained for classification, PAGs cause... View Details

Keywords: AI and Machine Learning; Mathematical Methods

24 Jan 2005
Research & Ideas

Entrepreneurial Hospital Pioneers New Model

roll out a similar model beyond India—maybe even into Europe and the U.S. What's the secret? According to HBS professor Tarun Khanna, the success of the hospital, called Narayana Hrudayalaya, is due to the vision and tireless work of a... View Details

Keywords: by Martha Lagace; Health

May 1986 (Revised July 1995)
Case

General Mills, Inc.: Yoplait Custard-Style Yogurt (A)

By: John A. Quelch

Yoplait's director of new product development is evaluating alternative line extensions including custard-style Yoplait. He must determine what additional research to recommend. Options include a mini-market test, a simulated test market and a fully-fledged test... View Details

Keywords: Food; Product Development; Product Marketing; Food and Beverage Industry; United States

Educators

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11 Jun 2007
Lessons from the Classroom

Teaching the Next Generation of Energy Executives

You may think that being an energy executive—especially a manager in a leading oil company—might be the easiest job around. Just flip the production switch, and watch gas prices head toward $4 a gallon. But students enrolled in Harvard Business School professor Forest... View Details

Keywords: by Julia Hanna; Energy; Utilities

April 2021
Article

Today's Surgeon Compensation Models Fall Short: Aligning Incentives to Create More Equitable and Value-based Compensation Models

By: Susanna Gallani, Mary Witkowski, Lauren Haskins, Haley Jeffcoat, Vinita Mujumdar and Frank Opelka

Modern medicine is undergoing a transformation that involves innovative surgical approaches, increased medical treatment options, clinical care pathways that require collaboration beyond hospital walls, and health data captured by electronic health records and other... View Details

Keywords: Physician Compensation; Surgeons; Health Care and Treatment; Business Model; Compensation and Benefits

October, 2022
Article

The Economic Dynamics of Competing Power Generation Sources

By: Gunther Glenk and Stefan Reichelstein

Competing power generation sources have experienced considerable shifts in both their revenue potential and their costs in recent years. Here we introduce the concept of Levelized Profit Margins (LPM) to capture the changing unit economics of both intermittent and... View Details

15 Aug 2011
Research & Ideas

A New Model for Business: The Museum

At first blush, the consumer appeal of a business like Groupon seems pretty obvious. The popular deal-of-the-day Internet start-up sells vouchers to restaurants, spas, and other local businesses at major markdowns--and who wouldn't want to score a 100-dollar sports... View Details

Keywords: by Carmen Nobel

1996
Article

Limits on Interest Rate Rules in the IS Model

By: William R. Kerr and Robert G. King

There has been a substantial amount of research on interest rate rules. This literature finds that the feasibility and desirability of interest rate rules depends on the structure of the model used to approximate macroeconomic reality. We employ a series of... View Details

Keywords: Inflation and Deflation; Macroeconomics; Interest Rates; Price; Governing Rules, Regulations, and Reforms; Performance Expectations

2021
Working Paper

Impact Accounting for Product Use: A Framework and Industry-specific Models

By: George Serafeim and Katie Trinh

This handbook provides the first systematic attempt to generate a framework and industry-specific models for the measurement of impacts on customers and the environment from use of products and services, in monetary terms, that can then be reflected in financial... View Details

Keywords: Impact Measurement; Product Impact; Customer Welfare; Environment; ESG; Product; Customers; Well-being; Environmental Sustainability; Measurement and Metrics; Accounting; Financial Statements; Analysis; Framework

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