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- October 2023
- Case
To Fizzle Out or Heat Up? PepsiCo and Coca-Cola’s SodaStream and Costa Coffee Acquisitions
By: David Collis and Haisley Wert
U.S. beverage giants PepsiCo and Coca-Cola shared many similarities by August 2018—both were founded by pharmacists in the 1890s, grew to offer hundreds of drink brands, and championed rival flagship products that drove loyalists into taste-testing wars. That month,...
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- October 2023
- Article
Coordination and Bandwagon Effects: How Past Rankings Shape the Behavior of Voters and Candidates
By: Riako Granzier, Vincent Pons and Clémence Tricaud
Candidates’ placements in polls or past elections can be powerful coordination devices for both parties and voters. Using a regression discontinuity design in French elections, we show that candidates who place first by only a small margin in the first round are more...
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- October 2023
- Article
Product Variety, the Cost of Living, and Welfare Across Countries
By: Alberto Cavallo, Robert C. Feenstra and Robert Inklaar
We use the structure of the Melitz (2003) model to compute the cost of living and welfare across 47 countries, and compare these to conventional measures of prices and real consumption from the International Comparisons Project (ICP). The cost of living is inferred...
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- 2023
- Working Paper
The Effect of Childhood Environment on Political Behavior: Evidence from Young U.S. Movers, 1992–2021
By: Jacob R. Brown, Enrico Cantoni, Sahil Chinoy, Martin Koenen and Vincent Pons
We ask how childhood environment shapes political behavior. We measure young voters’ participation and party affiliation in nationally comprehensive voter files and reconstruct their childhood location histories based on their parents’ addresses. We compare outcomes of...
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- 2023
- Working Paper
Navigating the Jagged Technological Frontier: Field Experimental Evidence of the Effects of AI on Knowledge Worker Productivity and Quality
By: Fabrizio Dell'Acqua, Edward McFowland III, Ethan Mollick, Hila Lifshitz-Assaf, Katherine C. Kellogg, Saran Rajendran, Lisa Krayer, François Candelon and Karim R. Lakhani
The public release of Large Language Models (LLMs) has sparked tremendous interest in how humans will use Artificial Intelligence (AI) to accomplish a variety of tasks. In our study conducted with Boston Consulting Group, a global management consulting firm, we examine...
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- 2023
- Working Paper
Incentivizing Innovation in Open Source: Evidence from the GitHub Sponsors Program
By: Annamaria Conti, Vansh Gupta, Jorge Guzman and Maria P. Roche
Open source is key to innovation, but we know little about how to incentivize
it. In this paper, we examine the impact of a program providing monetary
incentives to motivate innovators to contribute to open source. The Sponsors
program was introduced by GitHub in...
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- 2023
- Working Paper
Homeward Bound: How Migrants Seek Out Familiar Climates
By: Marguerite Obolensky, Marco Tabellini and Charles Taylor
This paper introduces the concept of “climate matching” as a driver of migration. Using historical censuses and administrative data, we document several novel findings. First, we show that climate strongly predicts the spatial distribution of international and domestic...
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Keywords:
Migration;
Climate;
Immigration;
Residency;
Weather;
Ethnicity;
Climate Change;
Geographic Location;
Policy;
United States
- 2023
- Article
Evidence from the First Shared Medical Appointments (SMAs) Randomised Controlled Trial in India: SMAs Increase the Satisfaction, Knowledge, and Medication Compliance of Patients with Glaucoma
By: Nazlı Sönmez, Kavitha Srinivasan, Rengaraj Venkatesh, Ryan W. Buell and Kamalini Ramdas
In Shared Medical Appointments (SMAs), patients with similar conditions meet the physician together and each receives one-on-one attention. SMAs can improve outcomes and physician productivity. Yet privacy concerns have stymied adoption. In physician-deprived nations,...
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- July 2023 (Revised July 2023)
- Background Note
Generative AI Value Chain
By: Andy Wu and Matt Higgins
Generative AI refers to a type of artificial intelligence (AI) that can create new content (e.g., text, image, or audio) in response to a prompt from a user. ChatGPT, Bard, and Claude are examples of text generating AIs, and DALL-E, Midjourney, and Stable Diffusion are...
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- June 2023
- Case
Launching Egypt’s First Digital Banking Platform: QNB Bebasata
By: Mark Egan, Billy Chan and Ahmed Dahawy
The leadership team at QNB Alahli, Egypt's second biggest private bank, looked back on their efforts to create a brand-new, fully digital banking platform since 2019. A digital-only banking service was unprecedented in Egypt, a country where over 90% of financial...
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- 2023
- Working Paper
Auditing Predictive Models for Intersectional Biases
By: Kate S. Boxer, Edward McFowland III and Daniel B. Neill
Predictive models that satisfy group fairness criteria in aggregate for members of a protected class, but do not guarantee subgroup fairness, could produce biased predictions for individuals at the intersection of two or more protected classes. To address this risk, we...
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- June 2023
- Article
Regulatory Limits to Risk Management
By: Ishita Sen
Variable annuities, the largest liability of U.S. life insurers, are investment products containing long-dated minimum return guarantees. I show that guarantees with similar economic risks are treated differently by regulation and these differences impact insurers’...
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- May 2023
- Article
Self-Preferencing at Amazon: Evidence from Search Rankings
By: Chiara Farronato, Andrey Fradkin and Alexander MacKay
We study whether Amazon engages in self-preferencing on its marketplace by favoring its own brands (e.g., Amazon Basics) in search. To address this question, we collect new micro-level consumer search data using a custom browser extension installed by a panel of study...
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- 2023
- Working Paper
Who Invests in Crypto? Wealth, Financial Constraints, and Risk Attitudes
By: Darren Aiello, Scott R. Baker, Tetyana Balyuk, Marco Di Maggio, Mark J. Johnson and Jason Kotter
We provide a first look into the drivers of household cryptocurrency investing. Analyzing
consumer transaction data for millions of U.S. households, we find that, except for high income
early adopters, cryptocurrency investors resemble the general population. These...
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- 2023
- Working Paper
Applications or Approvals: What Drives Racial Disparities in the Paycheck Protection Program?
By: Sergey Chernenko, Nathan Kaplan, Asani Sarkar and David S. Scharfstein
We use the 2020 Small Business Credit Survey to study the sources of racial disparities in use of the Paycheck Protection Program (PPP). Black-owned firms are 8.9 percentage points less likely than observably similar white-owned firms to receive PPP loans. About 55% of...
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- March 2023
- Supplement
Halftime for Heidelberg
By: Debora L. Spar
The case follows President Rob Huntington as he seeks to find a viable way forward for Heidelberg University.
Located in Tiffin, Ohio, Heidelberg is a small, private, four-year university. As with many similar institutions of higher education, it currently faces... View Details
Located in Tiffin, Ohio, Heidelberg is a small, private, four-year university. As with many similar institutions of higher education, it currently faces... View Details
- 2023
- Working Paper
Complexity and Time
By: Benjamin Enke, Thomas Graeber and Ryan Oprea
We provide experimental evidence that core intertemporal choice anomalies -- including extreme short-run impatience, structural estimates of present bias, hyperbolicity and transitivity violations -- are driven by complexity rather than time or risk preferences. First,...
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- March–April 2023
- Article
Market Segmentation Trees
By: Ali Aouad, Adam Elmachtoub, Kris J. Ferreira and Ryan McNellis
Problem definition: We seek to provide an interpretable framework for segmenting users in a population for personalized decision making. Methodology/results: We propose a general methodology, market segmentation trees (MSTs), for learning market...
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- February 2023
- Case
Roblox: Virtual Commerce in the Metaverse
By: Ayelet Israeli and Nicole Tempest Keller
In 2022, Roblox had 58.8 million daily active users, including over half of all children and teens under the age of 16 in the United States. Roblox, a free-to-use “co-experience platform”, allowed users to come together in immersive 3D experiences to socialize, work,...
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Keywords:
Entertainment;
Games, Gaming, and Gambling;
Market Design;
Marketing;
Brands and Branding;
Marketing Channels;
Marketing Strategy;
Business Strategy;
Economics;
Economy;
Economic Systems;
Advertising;
Advertising Campaigns;
Digital Platforms;
Markets;
Price;
Innovation and Management;
Entertainment and Recreation Industry;
Video Game Industry;
Technology Industry;
United States;
California;
North America;
South America;
Asia;
Europe
- February 2023
- Supplement
Shanty Real Estate: Teaching Note Supplement
By: Michael Luca
Shanty is a simulation in which students inhabit the role of either a traditional home buyer or an iBuyer, both bidding on the same condo. The traditional home buyer has access to a “comp sheet” of similar properties that have recently sold, and has done a walkthrough....
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