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- June 2021
- Case
Mobileye 2021: Robotaxi and/or Consumer AV?
By: David B. Yoffie, Danielle Golan and Nicole Tempest Keller
In March 2021, Amnon Shashua, co-founder and CEO of Israel-based Mobileye, was preparing to meet with Intel’s new CEO, Pat Gelsinger, to review plans for the future. Mobileye had been acquired by California-based Intel in 2017, but still operated independently.... View Details
Keywords: Technology Companies; Robotics; Autonomous Vehicles; Strategy; Decision Making; Transportation; Technological Innovation; Technology Industry; Auto Industry; Transportation Industry; Israel
Yoffie, David B., Danielle Golan, and Nicole Tempest Keller. "Mobileye 2021: Robotaxi and/or Consumer AV?" Harvard Business School Case 721-481, June 2021.
- 2021
- Working Paper
Regulatory Approval and Expanded Market Size
By: Benjamin Berger, Amitabh Chandra and Craig Garthwaite
Regulatory review of new medicines is often viewed as a hindrance to innovation by increasing the hurdle to bring products to market. However, a more complete accounting of regulation must also account for its potential market expanding effects through quality... View Details
Keywords: New Medicines; Regulatory Approval; Health Care and Treatment; Research and Development; Governing Rules, Regulations, and Reforms; Markets; Expansion; Pharmaceutical Industry
Berger, Benjamin, Amitabh Chandra, and Craig Garthwaite. "Regulatory Approval and Expanded Market Size." NBER Working Paper Series, No. 28889, June 2021.
- 2021
- Working Paper
The Great Unequalizer: Initial Health Effects of COVID-19 in the United States
By: Marcella Alsan, Amitabh Chandra and Kosali I. Simon
We measure inequities from the COVID-19 pandemic on mortality and hospitalizations in the United States during the early months of the outbreak. We discuss challenges in measuring health outcomes and health inequality, some of which are specific to COVID-19 and others... View Details
Alsan, Marcella, Amitabh Chandra, and Kosali I. Simon. "The Great Unequalizer: Initial Health Effects of COVID-19 in the United States." NBER Working Paper Series, No. 28958, June 2021.
- Article
Diversity and Team Performance in a Kenyan Organization
By: Benjamin Marx, Vincent Pons and Tavneet Suri
We present the results from a field experiment on team diversity. Individuals working as door-to-door canvassers for a non-profit organization were randomly assigned a teammate, a supervisor, and a list of individuals to canvass. This created random variation within... View Details
Keywords: Ethnic Diversity; Organizational Behavior; Labor Management; Groups and Teams; Diversity; Performance
Marx, Benjamin, Vincent Pons, and Tavneet Suri. "Diversity and Team Performance in a Kenyan Organization." Art. 104332. Journal of Public Economics 197 (May 2021).
- 2021
- Working Paper
Going by the Book: Valuation Ratios and Stock Returns
By: Ki-Soon Choi, Eric So and Charles C.Y. Wang
We study the use of firms’ book-to-market ratios (B/M) in value investing and its implications for comovements in firms’ stock returns and trading volumes. We show B/M has become increasingly detached from common alternative valuation ratios over time while also... View Details
Choi, Ki-Soon, Eric So, and Charles C.Y. Wang. "Going by the Book: Valuation Ratios and Stock Returns." Harvard Business School Working Paper, No. 21-126, May 2021.
- May 2021
- Article
The Firm Next Door: Using Satellite Images to Study Local Information Advantage
By: Jung Koo Kang, Lorien Stice-Lawrence and Forester Wong
We use novel satellite data that track the number of cars in the parking lots of 92,668 stores for 71 publicly listed U.S. retailers to study the local information advantage of institutional investors. We establish car counts as a timely measure of store-level... View Details
Keywords: Satellite Images; Store-level Performance; Institutional Investors; Local Advantage; Overweighting; Processing Costs; Alternative Data; Big Data; Emerging Technologies; Information; Quality; Institutional Investing; Decision Making; Behavioral Finance; Analytics and Data Science
Kang, Jung Koo, Lorien Stice-Lawrence, and Forester Wong. "The Firm Next Door: Using Satellite Images to Study Local Information Advantage." Journal of Accounting Research 59, no. 2 (May 2021): 713–750.
- April 2021 (Revised December 2023)
- Case
The Mahindra Group: Leading with Purpose
By: Ranjay Gulati and Rachna Tahilyani
India headquartered Mahindra Group is a multibillion-dollar federation of companies operating across the globe. It is ahead of its time in articulating its purpose and mapping its values, something it had first done at inception and then refreshed yet again as ‘Rise’... View Details
Keywords: Mission and Purpose; Organizational Culture; Change Management; Communication Strategy; Family Ownership; Corporate Social Responsibility and Impact; Revenue; Auto Industry; Financial Services Industry; Manufacturing Industry; Technology Industry; Asia; India; Mumbai; South Korea; Italy; United States
Gulati, Ranjay, and Rachna Tahilyani. "The Mahindra Group: Leading with Purpose." Harvard Business School Case 421-091, April 2021. (Revised December 2023.)
- April 2021 (Revised July 2021)
- Case
StockX: The Stock Market of Things (Abridged)
By: Chiara Farronato, John J. Horton, Annelena Lobb and Julia Kelley
Founded in 2015 by Dan Gilbert, Josh Luber, and Greg Schwartz, StockX was an online platform where users could buy and sell unworn luxury and limited-edition sneakers. Sneaker resale prices often fluctuated over time based on supply and demand, creating a robust... View Details
Keywords: Markets; Auctions; Bids and Bidding; Demand and Consumers; Consumer Behavior; Analytics and Data Science; Market Design; Digital Platforms; Market Transactions; Marketplace Matching; Supply and Industry; Analysis; Price; Product Marketing; Product Launch; Apparel and Accessories Industry; Fashion Industry; North and Central America; United States; Michigan; Detroit
Farronato, Chiara, John J. Horton, Annelena Lobb, and Julia Kelley. "StockX: The Stock Market of Things (Abridged)." Harvard Business School Case 621-107, April 2021. (Revised July 2021.)
- April 2021
- Article
Evaluating Firm-Level Expected-Return Proxies: Implications for Estimating Treatment Effects
By: Charles M.C. Lee, Eric C. So and Charles C.Y. Wang
We introduce a parsimonious framework for choosing among alternative expected-return proxies (ERPs) when estimating treatment effects. By comparing ERPs’ measurement-error variances in the cross section and in time series, we provide new evidence on the relative... View Details
Keywords: Implied Cost Of Capital; Expected Returns; Cost of Capital; Investment Return; Performance Evaluation
Lee, Charles M.C., Eric C. So, and Charles C.Y. Wang. "Evaluating Firm-Level Expected-Return Proxies: Implications for Estimating Treatment Effects." Review of Financial Studies 34, no. 4 (April 2021): 1907–1951.
- 2021
- Book
Glass Half-Broken: Shattering the Barriers That Still Hold Women Back at Work
By: Colleen Ammerman and Boris Groysberg
Why does the gender gap persist and how can we close it? For years women have made up the majority of college-educated workers in the United States. In 2019, the gap between the percentage of women and the percentage of men in the workforce was the smallest on record.... View Details
Keywords: Women; Career; Gender Gap; Glass Ceiling; Gender; Employment; Personal Development and Career; Equality and Inequality; Organizational Culture; Diversity; Management; Strategy
Ammerman, Colleen, and Boris Groysberg. Glass Half-Broken: Shattering the Barriers That Still Hold Women Back at Work. Boston: Harvard Business Review Press, 2021.
- 2021
- Working Paper
Time Dependency, Data Flow, and Competitive Advantage
Data is fundamental to machine learning-based products and services and is considered strategic due to its externalities for businesses, governments, non-profits, and more generally for society. It is renowned that the value of organizations (businesses, government... View Details
Keywords: Economics Of AI; Value Of Data; Perishability; Time Dependency; Flow Of Data; Data Strategy; Analytics and Data Science; Value; Strategy; Competitive Advantage
Valavi, Ehsan, Joel Hestness, Marco Iansiti, Newsha Ardalani, Feng Zhu, and Karim R. Lakhani. "Time Dependency, Data Flow, and Competitive Advantage." Harvard Business School Working Paper, No. 21-099, March 2021.
- Article
A Multicountry Perspective on Gender Differences in Time Use During COVID-19
By: Laura M. Giurge, Ashley V. Whillans and Ayse Yemiscigil (shared authorship)
The COVID-19 pandemic has fundamentally altered how people spend time, with possible consequences for subjective well-being. Using diverse samples of remote workers from the United States, Canada, Denmark, Brazil, and Spain (n = 31,141), following a preregistered... View Details
Keywords: Time; Subjective Well-being; COVID-19; Health Pandemics; Gender; Time Management; Well-being; Work-Life Balance; Global Range
Giurge, Laura M., Ashley V. Whillans, and Ayse Yemiscigil (shared authorship). "A Multicountry Perspective on Gender Differences in Time Use During COVID-19." Proceedings of the National Academy of Sciences 118, no. 12 (March 23, 2021).
- Article
A Feasibility Study Using Time-driven Activity-based Costing as a Management Tool for Provider Cost Estimation: Lessons from the National TB Control Program in Zimbabwe in 2018
By: J. Chirenda, B. Nhlema Simwaka, C. Sandy, K. Bodnar, S. Corbin, P. Desai, T. Mapako, S. Shamu, C. Timire, E. Antonio, A. Makone, A. Birikorang, T. Mapuranga, M. Ngwenya, T. Masunda, M. Dube, E. Wandwalo, L. Morrison and R. S. Kaplan
Background: This study used process maps and time-driven activity-based costing to document TB service delivery processes. The analysis identified the resources required to sustain TB services in Zimbabwe, as well as several opportunities for more effective and... View Details
Keywords: Time-Driven Activity-Based Costing; Provider Cost; Health Care and Treatment; Cost Management; Activity Based Costing and Management; Zimbabwe
Chirenda, J., B. Nhlema Simwaka, C. Sandy, K. Bodnar, S. Corbin, P. Desai, T. Mapako, S. Shamu, C. Timire, E. Antonio, A. Makone, A. Birikorang, T. Mapuranga, M. Ngwenya, T. Masunda, M. Dube, E. Wandwalo, L. Morrison, and R. S. Kaplan. "A Feasibility Study Using Time-driven Activity-based Costing as a Management Tool for Provider Cost Estimation: Lessons from the National TB Control Program in Zimbabwe in 2018." BMC Health Services Research 21, no. 242 (2021).
- March 16, 2021
- Article
From Driverless Dilemmas to More Practical Commonsense Tests for Automated Vehicles
By: Julian De Freitas, Andrea Censi, Bryant Walker Smith, Luigi Di Lillo, Sam E. Anthony and Emilio Frazzoli
For the first time in history, automated vehicles (AVs) are being deployed in populated environments. This unprecedented transformation of our everyday lives demands a significant undertaking: endowing
complex autonomous systems with ethically acceptable behavior. We... View Details
Keywords: Automated Driving; Public Health; Artificial Intelligence; Transportation; Health; Ethics; Policy; AI and Machine Learning
De Freitas, Julian, Andrea Censi, Bryant Walker Smith, Luigi Di Lillo, Sam E. Anthony, and Emilio Frazzoli. "From Driverless Dilemmas to More Practical Commonsense Tests for Automated Vehicles." Proceedings of the National Academy of Sciences 118, no. 11 (March 16, 2021).
- March 2021 (Revised July 2021)
- Case
Resident
By: Jeffrey F. Rayport and Thomas O. Jones
Launched in 2016, Resident was a leading player in the direct-to-consumer bed-in-a-box mattress market, where it was one of at least 175 venture-backed companies competing in the space. By late 2020, it had realized over $500 million in revenue, profitability in the... View Details
Keywords: Digital Marketing; Business Growth and Maturation; Operations; Entrepreneurship; Competitive Strategy; Initial Public Offering; Decisions; Marketing Strategy; Cash Flow; Demand and Consumers
Rayport, Jeffrey F., and Thomas O. Jones. "Resident." Harvard Business School Case 821-090, March 2021. (Revised July 2021.)
- March 2021
- Supplement
Snapp: Scaling Under Sanctions in Iran (B)
By: Meg Rithmire and Gamze Yucaoglu
The case opens in November 2020 as Eyad Alkassar and Mahmoud Fouz, co-founders of Iran’s first and leading ride-hailing platform, Snapp, eagerly await the results of the U.S. presidential elections.
The case takes us through the challenging times between... View Details
The case takes us through the challenging times between... View Details
Keywords: Sanctions; Change Management; Disruption; Volatility; Decision Choices and Conditions; Cross-Cultural and Cross-Border Issues; Government and Politics; International Relations; National Security; Crisis Management; Risk Management; Health Pandemics; Transportation Industry; Middle East; Iran
Rithmire, Meg, and Gamze Yucaoglu. "Snapp: Scaling Under Sanctions in Iran (B)." Harvard Business School Supplement 721-036, March 2021.
- March 2021
- Article
A Diplomatic Counterrevolution: Indonesian Diplomacy and the Invasion of East Timor
By: Mattias Fibiger
This article reinterprets the Indonesian invasion of East Timor as a "diplomatic counterrevolution." Using the central archival records of the Suharto regime for the first time in English-language scholarship, it argues that Indonesian diplomats pursued diplomacy in... View Details
Fibiger, Mattias. "A Diplomatic Counterrevolution: Indonesian Diplomacy and the Invasion of East Timor." Modern Asian Studies 55, no. 2 (March 2021): 587–628.
- 2021
- Working Paper
First Law of Motion: Influencer Video Advertising on TikTok
By: Jeremy Yang, Juanjuan Zhang and Yuhan Zhang
This paper engineers an intuitive feature that is predictive of the causal effect of influencer video advertising on product sales. We propose the concept of m-score, a summary statistic that captures the extent to which a product is advertised in the most engaging... View Details
Keywords: Influencer Advertising; Video Advertising; Computer Vision; Machine Learning; Advertising; Online Technology
Yang, Jeremy, Juanjuan Zhang, and Yuhan Zhang. "First Law of Motion: Influencer Video Advertising on TikTok." Working Paper, March 2021.
- 2021
- Working Paper
How Much Should We Trust Staggered Difference-In-Differences Estimates?
By: Andrew C. Baker, David F. Larcker and Charles C.Y. Wang
Difference-in-differences analysis with staggered treatment timing is frequently used to assess the impact of policy changes on corporate outcomes in academic research. However, recent advances in econometric theory show that such designs are likely to be biased in the... View Details
Keywords: Difference In Differences; Staggered Difference-in-differences Designs; Generalized Difference-in-differences; Dynamic Treatment Effects; Mathematical Methods
Baker, Andrew C., David F. Larcker, and Charles C.Y. Wang. "How Much Should We Trust Staggered Difference-In-Differences Estimates?" European Corporate Governance Institute Finance Working Paper, No. 736/2021, February 2021. (Harvard Business School Working Paper, No. 21-112, April 2021.)
- March 2021
- Article
Last Place Aversion in Queues
By: Ryan W. Buell
This paper documents the effects of last place aversion in queues and its implications for customer experiences and behaviors as well as for operating performance. An observational analysis of customers queuing at a grocery store, and four online studies in which... View Details
Keywords: Behavioral Operations; Queues; Reference Effects; Last Place Aversion; Transparency; Customers; Behavior; Satisfaction; Service Operations
Buell, Ryan W. "Last Place Aversion in Queues." Management Science 67, no. 3 (March 2021): 1430–1452.