Publications

October 2011
Article

Under Threat: Responses to and the Consequences of Threats to Individuals' Identities

I review and reconceptualize identity threat, defining it as an experience appraised as indicating potential harm to the value, meanings, or enactment of an identity. I also develop a theoretical model and propositions that generate insights into how individuals... View Details

Keywords: Identity; Value; Theory; Organizations; Research

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October 2023 (Revised November 2023)
Case

Recycle & Re-Match: The Future of Soccer Turfs

By: George Serafeim, Lena Duchene and Carlota Moniz

By August 2023, Re-Match, an artificial turf waste-to-value company, had operations in Denmark and the Netherlands and had recycled over 160,000 tons of waste and plastic fiber. With recent capital injection from the VC firm Verdane and a dual revenue business model,... View Details

Research Summary

Statistical Methodology

William Simpson is developing methods of inference to use when assumptions of standard models are not met. He has created a hypothesis test to use for ipsative variables that adjusts for the non-zero correlations among variables expected under the null hypothesis. ... View Details

February 2024 (Revised September 2024)
Case

TimeCredit

By: Emanuele Colonnelli, Raymond Kluender and Shai Benjamin Bernstein

TimeCredit is an artificial intelligence (AI) startup that is developing large language models (LLMs) to generate accounting memos. The case follows Ndonga Sagnia, a Gambian Harvard Business School MBA student with an accounting background, as she decides how much... View Details

Keywords: Accounting; Business Startups; Entrepreneurship; Financing and Loans; AI and Machine Learning; Entrepreneurial Finance; Identity; Technology Industry

February 2010
Supplement

Marketing Analysis Toolkit: Market Size and Market Share Analysis (CW)

By: Thomas J. Steenburgh and Jill Avery

This Excel worksheet contains sample problems, prebuilt Excel models to run market sizing and market share analyses, and charts and graphs which help visualize the results. It is designed to accompany Marketing Analysis Tookit: Market Size and Market Share Analysis.... View Details

Keywords: Mathematical Methods; Marketing Strategy; Decisions; Strategic Planning; Market Participation; Sales; Forecasting and Prediction; Management Analysis, Tools, and Techniques

2009
Chapter

Nonlinear Pricing

By: Raghuram Iyengar and Sunil Gupta

A nonlinear pricing schedule refers to any pricing structure where the total charges payable by customers are not proportional to the quantity of their consumed services. We begin the chapter with a discussion of the broad applicability of nonlinear pricing schemes. We... View Details

Keywords: Price; Demand and Consumers; Duopoly and Oligopoly; Monopoly; Service Operations; Research

TeachingInterests

Interpretability and Explainability in Machine Learning

By: Himabindu Lakkaraju

As machine learning models are increasingly being employed to aid decision makers in high-stakes settings such as healthcare and criminal justice, it is important to ensure that the decision makers correctly understand and consequent trust the functionality of these... View Details

2014
Working Paper

The Decoupling Effect of Digital Disruptors

By: Thales S. Teixeira and Peter Jamieson

While the Internet's first wave of disruption was marked by the unbundling of digital content, the second wave, decoupling, promises to generate more casualties in an even broader array of industries. Digital start-ups are disrupting traditional businesses by inserting... View Details

Keywords: Disruptive Innovation; Information Technology

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June 2006 (Revised June 2007)
Background Note

The Challenge Facing the U.S. Healthcare Delivery System

By: Richard M.J. Bohmer and Carin-Isabel Knoop

Discusses the challenges currently facing the U.S. health care delivery system. These challenges frame the problems managers of delivery organizations are currently facing. They include a burgeoning gap between demand and supply. Demand for health care services is... View Details

Keywords: Health Care and Treatment; Health Industry; United States

April 2019 (Revised April 2021)
Case

Wayfair

By: Jeffrey F. Rayport, Susie L. Ma and Matthew G. Preble

In 2016 Niraj Shah and Steve Conine, founders of online home goods retailer Wayfair, are faced with a decision about how to improve user experience on their e-commerce sites. A key driver of consumer interest and conversion to purchase in the home category is visual... View Details

Keywords: Visual Assets; Corporate Entrepreneurship; Decision Making; Business or Company Management; Growth Management; Innovation and Invention; Operations; Strategy; Technology; Retail Industry; Service Industry; United States; Massachusetts

January 2023 (Revised December 2023)
Case

OhmConnect: Energizing the Future

By: Jeffrey F. Rayport, Jennifer Fonstad and Nicole Tempest Keller

Founded in 2013, OhmConnect was a free consumer web app that alerted customers about peak hours of electricity demand, and paid them to lower their energy use at home during these periods. The company sold the aggregated reductions generated by thousands of households... View Details

Keywords: App Development; Renewable Energy; Electricity Usage; Regulations; VC; Technology; Customer Acquisition Cost (CAC); Scalability; Applications and Software; Growth and Development Strategy; Governing Rules, Regulations, and Reforms; Business Model; Venture Capital; Energy Industry; United States; California; Texas; Europe

2008
Working Paper

Allocating Marketing Resources

By: Sunil Gupta and Thomas J. Steenburgh

Marketing is essential for the organic growth of a company. Not surprisingly, firms spend billions of dollars on marketing. Given these large investments, marketing managers have the responsibility to optimally allocate these resources and demonstrate that these... View Details

Keywords: Investment Return; Resource Allocation; Marketing; Demand and Consumers; Mathematical Methods

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2008
Chapter

Allocating Marketing Resources

By: Sunil Gupta and Thomas J. Steenburgh

Companies spend billions of dollars on marketing every year because it is essential to organic growth. Given these large investments, marketing managers have the responsibility to optimally allocate resources and to demonstrate that their investments generate... View Details

Keywords: Investment Return; Resource Allocation; Marketing; Demand and Consumers; Mathematical Methods

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02 Oct 2020
News

Computer Simulations Are Better — and More Affordable — than Ever

Article

Guilt Enhances the Sense of Control and Drives Risky Judgments

By: Maryam Kouchaki, Christopher Oveis and F. Gino

The present studies investigate the hypothesis that guilt influences risk-taking by enhancing one's sense of control. Across multiple inductions of guilt, we demonstrate that experimentally induced guilt enhances optimism about risks for the self (Study 1), preferences... View Details

Keywords: Risk and Uncertainty; Behavior; Emotions

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February 2024
Teaching Note

TimeCredit

By: Emanuele Colonnelli, Raymond Kluender and Shai Benjamin Bernstein

Teaching Note for HBS Case No. 824-139. TimeCredit is an artificial intelligence (AI) startup that is developing large language models (LLMs) to generate accounting memos. The case follows Ndonga Sagnia, a Gambian Harvard Business School MBA student with an accounting... View Details

Keywords: Accounting; Business Startups; Entrepreneurship; Financing and Loans; AI and Machine Learning; Entrepreneurial Finance; Identity; Partners and Partnerships; Technology Industry

January 2020 (Revised July 2020)
Case

BlackRock: Linking Purpose to Profit

By: Aiyesha Dey

The case revolves around the actions that Barbara Novick, co-founder and Vice-Chair of Blackrock, and Michelle Edkins, Global Head of Investment Stewardship, would need to take in response to the controversial CEO letters from Laurence (Larry) Fink, Chairman and CEO of... View Details