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- November–December 2022
- Article
The Value of Descriptive Analytics: Evidence from Online Retailers
By: Ron Berman and Ayelet Israeli
Does the adoption of descriptive analytics impact online retailer performance, and if so, how? We use the synthetic difference-in-differences method to analyze the staggered adoption of a retail analytics dashboard by more than 1,500 e-commerce websites, and we find an...
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Keywords:
Descriptive Analytics;
Big Data;
Synthetic Control;
E-commerce;
Online Retail;
Difference-in-differences;
Martech;
Internet and the Web;
Analytics and Data Science;
Performance;
Marketing;
Retail Industry
Berman, Ron, and Ayelet Israeli. "The Value of Descriptive Analytics: Evidence from Online Retailers." Marketing Science 41, no. 6 (November–December 2022): 1074–1096.
- 2022
- Working Paper
The Ties That No Longer Bind: Inventor Mobility and Patent Litigation
By: Daniel Jay Brown and Maria Roche
The retention of inventor-employees represents a core strategic concern for firms in innovative industries. In this paper, we examine the impact of reduced patent enforceability on the mobility of inventor-employees and explore the related influence on firms’...
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Keywords:
Mobility;
Inventors;
Patent Enforceability;
Skills;
Strategic Human Capital;
Retention;
Innovation and Invention;
Intellectual Property
Brown, Daniel Jay, and Maria Roche. "The Ties That No Longer Bind: Inventor Mobility and Patent Litigation." Harvard Business School Working Paper, No. 23-021, October 2022.
- August, 2022
- Article
Changing Ingroup Boundaries: The Effect of Immigration on Race Relations in the U.S.
By: Vasiliki Fouka and Marco Tabellini
How do social group boundaries evolve? Does the appearance of a new outgroup change the ingroup's perceptions of other outgroups? We introduce a conceptual framework of context-dependent categorization, in which exposure to one minority leads to recategorization of...
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Keywords:
In-group-out-group Relations;
Ingroup-outgroup Relations;
Immigration;
Race;
Relationships;
United States
Fouka, Vasiliki, and Marco Tabellini. "Changing Ingroup Boundaries: The Effect of Immigration on Race Relations in the U.S." American Political Science Review 116, no. 3 (August, 2022): 968–984. (Featured in the Boston Globe, Washington Post, and HBS Working Knowledge.)
- August 2022
- Article
What Makes a Good Image? Airbnb Demand Analytics Leveraging Interpretable Image Features
By: Shunyuan Zhang, Dokyun Lee, Param Vir Singh and Kannan Srinivasan
We study how Airbnb property demand changed after the acquisition of verified images (taken by Airbnb’s photographers) and explore what makes a good image for an Airbnb property. Using deep learning and difference-in-difference analyses on an Airbnb panel dataset...
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Keywords:
Sharing Economy;
Airbnb;
Property Demand;
Computer Vision;
Deep Learning;
Image Feature Extraction;
Content Engineering;
Property;
Marketing;
Demand and Consumers
Zhang, Shunyuan, Dokyun Lee, Param Vir Singh, and Kannan Srinivasan. "What Makes a Good Image? Airbnb Demand Analytics Leveraging Interpretable Image Features." Management Science 68, no. 8 (August 2022): 5644–5666.
- 2022
- Article
Regulatory Treatment of Changes in Fair Value and the Composition of Banks' Investment Portfolios
By: Michael Iselin, Jung Koo Kang and Joshua Madsen
In their implementation of Basel III, U.S. bank regulators are again including changes in the fair value of available-for-sale (AFS) debt securities in Tier 1 capital, but only for the largest U.S. banks. This paper investigates a potential impact of expanding this...
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Keywords:
Fair Value Accounting;
SFAS 115;
Basel III;
Governing Rules, Regulations, and Reforms;
Banks and Banking;
Debt Securities;
Credit;
Risk and Uncertainty;
Investment Portfolio;
Decision Making;
Banking Industry;
United States
Iselin, Michael, Jung Koo Kang, and Joshua Madsen. "Regulatory Treatment of Changes in Fair Value and the Composition of Banks' Investment Portfolios." Journal of Financial Reporting 7, no. 1 (2022): 123–143.
- 2022
- Working Paper
Laboratory Safety and Research Productivity
By: Alberto Galasso, Hong Luo and Brooklynn Zhu
Are laboratory safety practices a tax on scientific productivity? We examine this question by exploiting the substantial increase in safety regulations at the University of California following the shocking accidental death of a research assistant in 2008....
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Keywords:
Economics Of Science;
Risk Perception;
Safety Regulations;
Safety;
Working Conditions;
Governing Rules, Regulations, and Reforms;
Innovation and Invention
Galasso, Alberto, Hong Luo, and Brooklynn Zhu. "Laboratory Safety and Research Productivity." Harvard Business School Working Paper, No. 22-072, May 2022.
- Article
Early Withdrawal of Pandemic Unemployment Insurance: Effects on Earnings, Employment and Consumption
By: Kyle Coombs, Arindrajit Dube, Calvin Jahnke, Raymond Kluender, Suresh Naidu and Michael Stepner
In June 2021, 22 states ended all supplemental pandemic unemployment insurance (UI) benefits, eliminating benefits entirely for over 2 million workers and reducing benefits by $300 per week for over 1 million workers. Using anonymous bank transaction data and a...
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Keywords:
COVID-19 Pandemic;
Unemployment Insurance;
Health Pandemics;
Insurance;
Employment;
Financial Condition;
Spending;
Government Administration
Coombs, Kyle, Arindrajit Dube, Calvin Jahnke, Raymond Kluender, Suresh Naidu, and Michael Stepner. "Early Withdrawal of Pandemic Unemployment Insurance: Effects on Earnings, Employment and Consumption." AEA Papers and Proceedings 112 (May 2022): 85–90.
- Article
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...
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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?" Journal of Financial Economics 144, no. 2 (May 2022): 370–395. (Editor's Choice, May 2022.)
- May 2022
- Article
When Does Product Liability Risk Chill Innovation? Evidence from Medical Implants
By: Alberto Galasso and Hong Luo
Liability laws designed to compensate for harms caused by defective products may also affect innovation. We examine this issue by exploiting a major quasi-exogenous increase in liability risk faced by U.S. suppliers of polymers used to manufacture medical implants....
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Keywords:
Product Liability;
Innovation;
Tort;
Medical Devices;
Vertical Foreclosure;
Product;
Innovation and Invention;
Legal Liability;
Laws and Statutes;
Medical Devices and Supplies Industry
Galasso, Alberto, and Hong Luo. "When Does Product Liability Risk Chill Innovation? Evidence from Medical Implants." American Economic Journal: Economic Policy 14, no. 2 (May 2022): 366–401.
- 2022
- Working Paper
Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers
By: Magie Cheng and Shunyuan Zhang
The growth of the influencer marketing industry warrants an empirical examination of the effect of posting sponsored videos on an influencer’s reputation. We collect a novel dataset of user-generated YouTube videos created by prominent English-speaking influencers in...
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Keywords:
Influencer Marketing;
Social Influencers;
Brand;
Sponsorship;
Video Analytics;
Marketing;
Brands and Branding;
Media;
Reputation
Cheng, Magie, and Shunyuan Zhang. "Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers." Harvard Business School Working Paper, No. 22-067, April 2022.
- 2022
- Working Paper
A Linear Panel Model with Heterogeneous Coefficients and Variation in Exposure
By: Jesse M. Shapiro and Liyang Sun
Linear panel models featuring unit and time fixed effects appear in many areas of empirical economics. An active literature studies the interpretation of the ordinary least squares estimator of the model, commonly called the two-way fixed effects (TWFE) estimator, in...
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Shapiro, Jesse M., and Liyang Sun. "A Linear Panel Model with Heterogeneous Coefficients and Variation in Exposure." NBER Working Paper Series, No. 29976, April 2022.
- January 2022
- Article
Why Is Corporate Virtue in the Eye of the Beholder? The Case of ESG Ratings
By: Dane Christensen, George Serafeim and Anywhere Sikochi
Despite the rising use of environmental, social, and governance (ESG) ratings, there is substantial disagreement across rating agencies regarding what rating to give to individual firms. As what drives this disagreement is unclear, we examine whether a firm’s ESG...
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Keywords:
ESG Ratings;
Rating Agency Disagreement;
ESG Disclosure;
Corporate Social Responsibility;
Sustainability;
Corporate Social Responsibility and Impact;
Environmental Sustainability;
Corporate Disclosure
Christensen, Dane, George Serafeim, and Anywhere Sikochi. "Why Is Corporate Virtue in the Eye of the Beholder? The Case of ESG Ratings." Accounting Review 97, no. 1 (January 2022): 147–175.
- 2022
- Working Paper
Do Safety Management System Standards Indicate Safer Operations? Evidence from the OHSAS 18001 Occupational Health and Safety Standard
By: Kala Viswanathan, Matthew S. Johnson and Michael W. Toffel
Problem definition: In light of the enormous disruptions and costs associated with occupational injuries, companies and buyers are increasingly looking to voluntary occupational health and safety standards to improve worker safety. Yet because these standards...
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Keywords:
Occupational Health;
Occupational Safety;
Program Evaluation;
Safety Performance;
Injuries;
OHSAS 18001;
ISO 45001;
Standards;
Safety;
Quality;
Operations;
Performance Evaluation;
Manufacturing Industry;
United States
Viswanathan, Kala, Matthew S. Johnson, and Michael W. Toffel. "Do Safety Management System Standards Indicate Safer Operations? Evidence from the OHSAS 18001 Occupational Health and Safety Standard." Harvard Business School Working Paper, No. 22-042, December 2021. (Revised November 2022.)
- November 2021
- Article
Strict ID Laws Don't Stop Voters: Evidence from a U.S. Nationwide Panel, 2008–2018
By: Enrico Cantoni and Vincent Pons
U.S. states increasingly require identification to vote—an ostensive attempt to deter fraud that prompts complaints of selective disenfranchisement. Using a difference-in-differences design on a 1.6-billion-observations panel dataset, 2008–2018, we find that the laws...
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Keywords:
Voter ID Laws;
Voter Turnout;
Voting;
Political Elections;
Governing Rules, Regulations, and Reforms;
United States
Cantoni, Enrico, and Vincent Pons. "Strict ID Laws Don't Stop Voters: Evidence from a U.S. Nationwide Panel, 2008–2018." Quarterly Journal of Economics 136, no. 4 (November 2021): 2615–2660.
- September 2021
- Article
Shaking Things Up: Disruptive Events and Inequality
By: Letian Zhang
This paper develops a theory of how disruptive events could reduce racial and gender inequality in organizations. Despite pressure from regulators and advocates, racial and gender inequality in the workplace remains high. I theorize that because such inequality is...
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Keywords:
Inequality;
Equality and Inequality;
Diversity;
Race;
Gender;
Restructuring;
Mergers and Acquisitions;
Disruption
Zhang, Letian. "Shaking Things Up: Disruptive Events and Inequality." American Journal of Sociology 127, no. 2 (September 2021): 376–440.
- September 2021
- Article
Trials and Terminations: Learning from Competitors' R&D Failures
I analyze project continuation decisions where firms may resolve uncertainty through news about competitors' research and development (R&D) failures, as well as through their own results. I examine the trade-offs and interactions between product-market competition and...
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Krieger, Joshua L. "Trials and Terminations: Learning from Competitors' R&D Failures." Management Science 67, no. 9 (September 2021).
- 2021
- Working Paper
Science-Based Carbon Emissions Targets
By: David Freiberg, Jody Grewal and George Serafeim
We examine the effect of voluntarily adopting a standard for setting science-based carbon emissions targets on target difficulty and investments to achieve those targets. We find that firms with a track record of setting and achieving ambitious carbon targets are more...
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Keywords:
Target;
Targeting;
Target-setting;
Target Efficiency;
Management Control Systems;
Management Accounting;
Environment;
Environmental And Social Sustainability;
Climate Change;
Environmental Management;
Environmental Accounting;
Environmental Sustainability;
Management Analysis, Tools, and Techniques
Freiberg, David, Jody Grewal, and George Serafeim. "Science-Based Carbon Emissions Targets." Harvard Business School Working Paper, No. 21-108, March 2021.
- 2021
- Working Paper
Venture Capital's 'Me Too' Moment
By: Sophie Calder-Wang, Paul A. Gompers and Patrick Sweeney
In this paper, we document the historically low rate of hiring of women in the venture capital sector. We find that the high-profile Ellen Pao v. Kleiner Perkins gender discrimination trial had dramatic treatment effects. In difference-in-differences regressions, we...
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Keywords:
Gender Discrimination;
Founders;
Venture Capital;
Selection and Staffing;
Gender;
Lawsuits and Litigation
Calder-Wang, Sophie, Paul A. Gompers, and Patrick Sweeney. "Venture Capital's 'Me Too' Moment." NBER Working Paper Series, No. 28679, April 2021.
- 2022
- Article
Gender Inequality in Research Productivity During the COVID-19 Pandemic
By: Ruomeng Cui, Hao Ding and Feng Zhu
We study the disproportionate impact of the lockdown as a result of the COVID-19 outbreak on female and male academics' research productivity in social science. The lockdown has caused substantial disruptions to academic activities, requiring people to work from home....
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Keywords:
Gender Inequality;
Research Productivity;
Telecommuting;
COVID-19 Pandemic;
Research;
Performance Productivity;
Gender;
Equality and Inequality;
Health Pandemics
Cui, Ruomeng, Hao Ding, and Feng Zhu. "Gender Inequality in Research Productivity During the COVID-19 Pandemic." Manufacturing & Service Operations Management 24, no. 2 (March–April 2022): 707–726.
- 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.)