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- All HBS Web
(1,812)
- People (5)
- News (248)
- Research (1,118)
- Events (21)
- Multimedia (8)
- Faculty Publications (767)
Gerald Zaltman
*Joined Harvard Faculty: 1991
Prior Faculty Appointments: Northwestern University, 1968-75;
University of Pittsburgh, 1975-91
Prior Faculty Appointments: Northwestern University, 1968-75;
University of Pittsburgh, 1975-91
*Doctoral Degree in Sociology Received from: The John Hopkins University;
MBA Degree Received from: The University of... View Details
- March 2024
- Article
Human Capital Affects Religious Identity: Causal Evidence from Kenya
By: Livia Alfonsi, Michal Bauer, Julie Chytilová and Edward Miguel
We study how human capital and economic conditions causally affect the choice of religious denomination. We utilize a longitudinal dataset monitoring the religious history of more than 5,000 Kenyans over 20 years, in tandem with a randomized experiment (deworming) that... View Details
Alfonsi, Livia, Michal Bauer, Julie Chytilová, and Edward Miguel. "Human Capital Affects Religious Identity: Causal Evidence from Kenya." Art. 103215. Journal of Development Economics 167 (March 2024).
- 2024
- Working Paper
What Drives Variation in Investor Portfolios? Estimating the Roles of Beliefs and Risk Preferences
By: Mark Egan, Alexander MacKay and Hanbin Yang
We present an empirical model of portfolio choice that allows for the nonparametric estimation of investors' (subjective) expectations and risk preferences. Utilizing a comprehensive dataset of 401(k) plans from 2009 through 2019, we explore heterogeneity in asset... View Details
Keywords: Stock Market Expectations; Demand Estimation; Retirement Planning; Defined Contribution Retirement Plan; 401 (K); Finance; Investment Portfolio; Investment; Retirement; Behavioral Finance; Financial Services Industry; United States
Egan, Mark, Alexander MacKay, and Hanbin Yang. "What Drives Variation in Investor Portfolios? Estimating the Roles of Beliefs and Risk Preferences." Harvard Business School Working Paper, No. 22-044, December 2021. (Revisions Requested at the Review of Financial Studies. Revised April 2024. Direct download. NBER Working Paper Series, No. 29604, December 2021)
- September 2010
- Article
Do Inventory and Gross Margin Data Improve Sales Forecasts for U.S. Public Retailers?
By: Saravanan Kesavan, Vishal Gaur and Ananth Raman
Firm-level sales forecasts for retailers can be improved if we incorporate cost of goods sold, inventory, and gross margin (defined here as the ratio of sales to cost of goods sold) as three endogenous variables. We construct a simultaneous equations model, estimated... View Details
Keywords: Sales; Forecasting and Prediction; Distribution; Goods and Commodities; Cost; Public Sector; Profit; Mathematical Methods; Analytics and Data Science; Retail Industry; United States
Kesavan, Saravanan, Vishal Gaur, and Ananth Raman. "Do Inventory and Gross Margin Data Improve Sales Forecasts for U.S. Public Retailers?" Management Science 56, no. 9 (September 2010): 1519–1533.
Inequality regimes in Africa from pre-colonial times to the present
While current levels of economic inequality in Africa receive ample attention from academics and policymakers, we know little about the long-run evolution of inequality in the region. Even the new and influential ‘global inequality literature’ that is associated... View Details
- March 2022 (Revised July 2022)
- Case
Climate Action in Miami
The Miami metropolitan area is a global epicenter of climate risk from heat and sea level rise, but leaders have only recently mobilized for action to respond to this systemic challenge. Resilient 305 began a collaboration across officials in the cities of Miami and... View Details
Keywords: Climate Change; Climate Impact; Change; Leadership; Cross-sector Collaboration; Coalition; Ecosystem; Greenhouse Gas Emissions; Green Business; Adaptation; Environmental Sustainability; Infrastructure; Green Technology; Environmental Management; Miami
Kanter, Rosabeth Moss. "Climate Action in Miami." Harvard Business School Case 322-101, March 2022. (Revised July 2022.)
- March 17, 2021
- Other Article
Beyond Pajamas: Sizing Up the Pandemic Shopper
By: Ayelet Israeli, Eva Ascarza and Laura Castrillo
A first look at how the COVID-19 pandemic impacted e-commerce apparel shopping in the US and the UK. Extensive analysis and interactive graphics utilizing millions of transactions.
While the pandemic is still playing out, our preliminary investigations... View Details
While the pandemic is still playing out, our preliminary investigations... View Details
Keywords: Retail; Retail Analytics; Consumer; Pandemic; COVID; COVID-19; Apparel; Ecommerce; Online Shopping; Online Apparel; Online Sales; Returns; CRM; Customer Retention; Customer Experience; Customer Value; Digital; Customer Focus and Relationships; Customers; Health Pandemics; Consumer Behavior; Customer Relationship Management; Internet and the Web; Behavior; E-commerce; Retail Industry; Apparel and Accessories Industry; Technology Industry; United States; United Kingdom
Israeli, Ayelet, Eva Ascarza, and Laura Castrillo. "Beyond Pajamas: Sizing Up the Pandemic Shopper." Harvard Business School Working Knowledge (March 17, 2021).
- November–December 2023
- Article
Tax-Loss Harvesting with Cryptocurrencies
By: Lin William Cong, Wayne Landsman, Edward Maydew and Daniel Rabetti
We describe the taxation landscape in the cryptocurrency markets, especially concerning U.S. taxpayers, and examine how recent increases in tax scrutiny have led to changes in crypto investors' trading behavior. We argue conceptually and then empirically document that... View Details
Cong, Lin William, Wayne Landsman, Edward Maydew, and Daniel Rabetti. "Tax-Loss Harvesting with Cryptocurrencies." Art. 101607. Journal of Accounting & Economics 76, nos. 2-3 (November–December 2023).
- 2024
- Chapter
Managing, Preserving, and Unlocking Wealth through FinTech
By: Grace Headinger, Lauren Cohen and Zhaoheng Gong
In nearly every generation, a sentiment like Einstein’s has been expressed as a cautionary tale to constrain the development and application of technology. In spite of these calls, technology has time and again proven its utility and ability to improve across and upon... View Details
Headinger, Grace, Lauren Cohen, and Zhaoheng Gong. "Managing, Preserving, and Unlocking Wealth through FinTech." Chap. 11 in Research Handbook on Alternative Finance, edited by Franklin Allen and Meijun Qian, 250–281. Northampton, MA: Edward Elgar Publishing, 2024.
- December 2012
- Article
Bolstering and Restoring Feelings of Competence via the IKEA Effect
By: Daniel Mochon, Michael I. Norton and Dan Ariely
We examine the underlying process behind the IKEA effect, which is defined as consumers' willingness to pay more for self-created products than for identical products made by others, and explore the factors that influence both consumers' willingness to engage in... View Details
Mochon, Daniel, Michael I. Norton, and Dan Ariely. "Bolstering and Restoring Feelings of Competence via the IKEA Effect." International Journal of Research in Marketing 29, no. 4 (December 2012): 363–369.
- November 2009 (Revised May 2017)
- Case
Miracle Life, Inc.
By: Lauren Cohen and Christopher Malloy
Miracle Life is a firm with a unique setup and organizational structure. Specifically, it is a network marketing firm, also known as multi-level marketing (MLM) firm, which utilizes a large distributor base and depends on this individual distributor base to sell its... View Details
Keywords: Finance; Cash Flow; Stocks; Growth and Development Strategy; Product Marketing; Distribution; Organizational Structure
Cohen, Lauren, and Christopher Malloy. "Miracle Life, Inc." Harvard Business School Case 210-039, November 2009. (Revised May 2017.)
- September 2002 (Revised March 2006)
- Case
Environmental Power Corporation: Changing Manure Into Gold?
By: Ray A. Goldberg and Laure Mougeot Stroock
In 2002, Environmental Power Corp. (EPC), a small company developing renewable energy projects, was attempting to commercialize its "digester," a facility that extracted methane from manure, reduced manure's environmental impact, and generated electricity. The company... View Details
Keywords: Commercialization; Energy Generation; Renewable Energy; Environmental Sustainability; Investment; Projects; Wastes and Waste Processing; Corporate Finance; Business and Government Relations; Energy Industry
Goldberg, Ray A., and Laure Mougeot Stroock. "Environmental Power Corporation: Changing Manure Into Gold?" Harvard Business School Case 903-403, September 2002. (Revised March 2006.)
- 23 Jan 2024
- Research & Ideas
How to Keep Employees Productive: Support Caregivers
them. Many employers look at the low utilization of the caregiving services they currently offer and wrongly assume that caregiving services in general are of limited importance to their workers. But low View Details
Keywords: by Kara Baskin
- January 2021
- Article
A Model of Relative Thinking
By: Benjamin Bushong, Matthew Rabin and Joshua Schwartzstein
Fixed differences loom smaller when compared to large differences. We propose a model of relative thinking where a person weighs a given change along a consumption dimension by less when it is compared to bigger changes along that dimension. In deterministic settings,... View Details
Bushong, Benjamin, Matthew Rabin, and Joshua Schwartzstein. "A Model of Relative Thinking." Review of Economic Studies 88, no. 1 (January 2021): 162–191.
- Article
Bargaining with Imperfect Enforcement
By: Lucy White and Mark Williams
The game-theoretic bargaining literature insists on non-cooperative bargaining procedure but allows 'cooperative' implementation of agreements. The effect of this is to allow free-reign of bargaining power with no check upon it. In reality, courts cannot... View Details
Keywords: Agreements and Arrangements; Body of Literature; Contracts; Motivation and Incentives; Code Law; Game Theory
White, Lucy, and Mark Williams. "Bargaining with Imperfect Enforcement." RAND Journal of Economics 40, no. 2 (Summer 2009).
- November 1992 (Revised May 1993)
- Case
American Mobile Satellite Corporation
By: Frank V. Cespedes and Laura Goode
American Mobile Satellite Corp. (AMSC) has a license to provide wireless mobile communications via satellite throughout the United States and 200 miles of coastal waters. The first satellite launch is scheduled for 1994 and, in the interim, AMSC is providing limited... View Details
Keywords: Wireless Technology; Decisions; Distribution Channels; Marketing Strategy; Product Development; Sales; Emerging Markets; Resource Allocation; Performance Capacity; Communications Industry; Information Technology Industry; United States
Cespedes, Frank V., and Laura Goode. "American Mobile Satellite Corporation." Harvard Business School Case 593-038, November 1992. (Revised May 1993.)
- Program
Finance for Senior Executives
compensation incentives, and play a bigger role in helping your company optimize its financial resources and strengthen its bottom line. Details Apply strategic financial insight Make informed strategic decisions regarding capital structure View Details
- Article
Creating High-Impact Coalitions: CEOs Can Lead the Charge on Society’s Biggest Problems
By: Rosabeth M. Kanter and Tuna Cem Hayirli
Traditionally, responses to crises and societal problems—the COVID-19 pandemic, natural disasters, racial inequities—are considered the responsibility of the public sector and NGOs. But addressing the world’s most critical problems requires leadership, resources, and... View Details
Keywords: Coalition; Change; Problem Solving; Organization; Boundaries; Evolution; Mission; Moral Leadership; Balance; ＂Solutions Approach; Society; Problems and Challenges; Organizations; Mission and Purpose; Leading Change; Trust
Kanter, Rosabeth M., and Tuna Cem Hayirli. "Creating High-Impact Coalitions: CEOs Can Lead the Charge on Society’s Biggest Problems." Harvard Business Review 100, no. 2 (March–April 2022).
- 2021
- Working Paper
Consuming Contests: Outcome Uncertainty and Spectator Demand for Contest-based Entertainment
By: Patrick J. Ferguson and Karim R. Lakhani
Contests that are designed to be consumed for entertainment by non-contestants are a fixture of economic, cultural and political life. In this paper, we examine whether individuals prefer to consume contests that have more uncertain outcomes. We look to... View Details
Keywords: Contest Design; Information Preferences; Consumer Demand; Sports; Entertainment; Games, Gaming, and Gambling; Demand and Consumers; Outcome or Result
Ferguson, Patrick J., and Karim R. Lakhani. "Consuming Contests: Outcome Uncertainty and Spectator Demand for Contest-based Entertainment." Harvard Business School Working Paper, No. 21-087, February 2021.
- Article
They Are Us? The Mediating Effects of Compatibility-based Trust on the Relationship Between Discrimination and Overall Trust
By: Mariska Kappmeier, Bushra Guenoun and Remaya Campbell
The tragic Christchurch massacre brought the dangers of social ‘othering’ to the forefront of public attention. While the extreme nature of the attack shocked majority and minority groups alike, overt and latent discrimination are common experiences for many minorities... View Details
Kappmeier, Mariska, Bushra Guenoun, and Remaya Campbell. "They Are Us? The Mediating Effects of Compatibility-based Trust on the Relationship Between Discrimination and Overall Trust." New Zealand Journal of Psychology 48, no. 1 (April 2019): 97–105.