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- 2024
- Working Paper
Why Has Construction Productivity Stagnated? The Role of Land-Use Regulation
By: Leonardo D’Amico, Edward Glaeser, Joseph Gyourko, William Kerr and Giacomo A. M. Ponzetto
We document a Kuznets curve for construction productivity in 20th-century America.
Homes built per construction worker remained stagnant between 1900 and 1940, boomed after
World War II, and then plummeted after 1970. The productivity boom from 1940 to 1970
shows... View Details
- 20 Aug 2024
- Interview
Angel City Football Club: A New Business Model for Women’s Sports
By: Jeffrey F. Rayport, Brian Kenny and Nicole Tempest Keller
Angel City Football Club (ACFC) was founded in 2020 by venture capitalist Kara Nortman, entrepreneur Julie Uhrman, and actor and activist Natalie Portman. As outsiders to professional sports, the all-female founding team had rewritten the playbook for how to build a... View Details
- July 11, 2024
- Article
Research: New Hires’ Psychological Safety Erodes Quickly
By: Derrick P. Bransby, Michael J. Kerrissey and Amy C. Edmondson
Across industries, from manufacturing to health care, the luxury of waiting years to benefit from new talent is long gone. Thriving in today’s dynamic economy means bringing new hires up the learning curve faster than ever. Yet, the authors’ latest research suggests... View Details
- March 2024 (Revised April 2024)
- Case
Angel City Football Club: Scoring a New Model
By: Jeffrey F. Rayport, Jennifer Fonstad and Nicole Tempest Keller
In January 2024, Kara Nortman, Julie Uhrman, and Natalie Portman, the founders of Angel City Football Club (ACFC) were developing the club’s first three-year strategic plan. Founded in 2020, ACFC had a star-studded investor group, including Portman and celebrities such... View Details
- December 2023
- Article
Intermediary Balance Sheets and the Treasury Yield Curve
By: Wenxin Du, Benjamin Hebert and Wenhao Li
We document a regime change in the Treasury market post-Global Financial Crisis (GFC): dealers switched from net short to net long Treasury bonds. We construct “net-long” and “net-short” curves that account for balance sheet and financing costs, and show that actual... View Details
- 2023
- Working Paper
The Equity Market Implications of the Retail Investment Boom
By: Philippe van der Beck and Coralie Jaunin
This paper quantifies the impact of Robinhood traders on the US equity market. Within a structural model, we estimate retail and institutional demand curves and derive aggregate pricing implications via market clearing. The inelastic nature of institutional demand... View Details
- August 2023
- Case
Tenkara Outfitters
By: Christina Wallace, Jo Tango and Johnson Elugbadebo
After taking over from their parents, Sebastian Maxwell and Alexandra Ito, CEO and COO of Minnesota-based outdoor adventure brand Tenkara, must decide how they want to resource and grow this formerly family-run business. After outdoor activities exploded during the... View Details
- 2023
- Article
Experimental Evaluation of Individualized Treatment Rules
By: Kosuke Imai and Michael Lingzhi Li
The increasing availability of individual-level data has led to numerous applications of individualized (or personalized) treatment rules (ITRs). Policy makers often wish to empirically evaluate ITRs and compare their relative performance before implementing them in a... View Details
- October 17, 2022
- Article
Relational Diversity in Social Portfolios Predicts Well-Being
By: Hanne K. Collins, Serena F. Hagerty, Jordi Quoidbach, Michael I. Norton and Alison Wood Brooks
We document a link between the relational diversity of one’s social portfolio—the richness and evenness of relationship types across one’s social interactions—and well-being. Across four distinct samples, respondents from the United States who completed a preregistered... View Details
- October 2022 (Revised June 2024)
- Case
Driving Decarbonization at BMW
The case describes BMW’s electrification and decarbonization strategy, and how the company measured carbon emissions throughout the life cycle of its vehicles and used tools like carbon abatement cost curves to evaluate decarbonization opportunities. In mid-2022,... View Details
Keywords: Decarbonization; Climate Change; Environment; Sustainability; Carbon Accounting; Carbon; Carbon Abatement; Electric Vehicles; Automobiles; Transportation; Environmental Accounting; Environmental Management; Environmental Sustainability; Accounting; Strategy; Technological Innovation; Supply Chain; Business and Stakeholder Relations; Transportation Industry; Auto Industry; Battery Industry; Germany; China; United States; Europe
- 2022
- Working Paper
Consumer Demand with Social Influences: Evidence from an E-Commerce Platform
By: El Hadi Caoui, Chiara Farronato, John J. Horton and Robert Schultz
For some kinds of goods, rarity itself is valued. "Fashionable'" goods are demanded in part because they are unique. In this paper, we explore the economics of rare goods using auctions of limited-edition shoes held by an e-commerce platform. We model endogenous entry... View Details
- 2022
- Working Paper
The Fed and the Secular Decline in Interest Rates
In this paper I document a striking fact: a narrow window around Fed meetings fully captures the secular decline in U.S. Treasury yields since 1980. By contrast, yield movements outside this window are transitory and wash out over time. This is surprising because the... View Details
- February 2021
- Tutorial
Assessing Prediction Accuracy of Machine Learning Models
By: Michael Toffel and Natalie Epstein
This video describes how to assess the accuracy of machine learning prediction models, primarily in the context of machine learning models that predict binary outcomes, such as logistic regression, random forest, or nearest neighbor models. After introducing and... View Details
- February 2021
- Technical Note
Probability Distributions
By: Michael Parzen and Paul Hamilton
This technical note introduces students to the concept of random variables, and from there the normal and binomial distributions. After a brief introduction to random variables, the note describes the standard properties of the normal distribution: a single peak, and a... View Details
- January 2021
- Article
Machine Learning for Pattern Discovery in Management Research
By: Prithwiraj Choudhury, Ryan Allen and Michael G. Endres
Supervised machine learning (ML) methods are a powerful toolkit for discovering robust patterns in quantitative data. The patterns identified by ML could be used for exploratory inductive or abductive research, or for post-hoc analysis of regression results to detect... View Details
- August 2020 (Revised September 2020)
- Technical Note
Assessing Prediction Accuracy of Machine Learning Models
The note introduces a variety of methods to assess the accuracy of machine learning prediction models. The note begins by briefly introducing machine learning, overfitting, training versus test datasets, and cross validation. The following accuracy metrics and tools... View Details
- July 2020
- Case
Pivotal Ventures: Bending the Curve on Women’s Power and Influence
By: Lynda Applegate and Ankita Panda
- April 2020
- Article
Field Comparisons of Incentive-Compatible Preference Elicitation Techniques
By: Shawn A. Cole, A. Nilesh Fernando, Daniel Stein and Jeremy Tobacman
Knowledge of consumer demand is important for firms, policy makers, and economists. One common tool for incentive-compatible demand elicitation, the Becker-DeGroot-Marschak (BDM) mechanism, has been widely used in laboratory settings but rarely evaluated for... View Details
- 2019
- Working Paper
The Future of Executive Development: The CLO's Compass and The Executive Programs Designer's Guide
By: Mihnea Moldoveanu and Das Narayandas
Executive education worldwide has entered a period of disruption catalyzed by the digitalization of content, connectivity, and communication—while the demand for managerial skills is growing. The forces of disintermediation, disaggregation, and decoupling are creating... View Details
- November 2019 (Revised April 2020)
- Case
Danone: Changing the Food System
By: David E. Bell, Federica Gabrieli and Daniela Beyersdorfer
Emmanuel Faber, Chairman and CEO of the food and beverage company Danone, believed that humankind had only ten years to bend the curve on climate change and restore the biodiversity that the global food and agricultural ecosystem was critically dependent on. Upon... View Details