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Publications

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  • All HBS Web  (460)
    • News  (32)
    • Research  (357)
    • Events  (16)
    • Multimedia  (1)
  • Faculty Publications  (257)

Show Results For

  • All HBS Web  (460)
    • News  (32)
    • Research  (357)
    • Events  (16)
    • Multimedia  (1)
  • Faculty Publications  (257)
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  • March 2022
  • Article

How Much Does Your Boss Make? The Effects of Salary Comparisons

By: Zoë B. Cullen and Ricardo Perez-Truglia
The vast majority of the pay inequality in an organization comes from differences in pay between employees and their bosses. But are employees aware of these pay disparities? Are employees demotivated by this inequality? To address these questions, we conducted a... View Details
Keywords: Salary; Inequality; Managers; Career Concerns; Pay Transparency; Wages; Equality and Inequality; Perception; Behavior
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Cullen, Zoë B., and Ricardo Perez-Truglia. "How Much Does Your Boss Make? The Effects of Salary Comparisons." Journal of Political Economy 130, no. 3 (March 2022): 766–822.
  • 2016
  • Chapter

User-Generated Content and Social Media

By: Michael Luca
This paper documents what economists have learned about user-generated content (UGC) and social media. A growing body of evidence suggests that UGC on platforms ranging from Yelp to Facebook has a large causal impact on economic and social outcomes ranging from... View Details
Keywords: User-generated Content; Crowdsourcing; Design Economics; Internet and the Web; Marketing; Economics; Media; Social Media
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Luca, Michael. "User-Generated Content and Social Media." Chap. 12 in Handbook of Media Economics. Vol. 1B, edited by Simon Anderson, Joel Waldfogel, and David Strömberg. North-Holland Publishing Company, 2016.
  • Article

Criminal Recidivism after Prison and Electronic Monitoring

By: Rafael Di Tella and Ernesto Schargrodsky
We study criminal recidivism in Argentina by focusing on the re-arrest rates of two groups: individuals released from prison and individuals released from electronic monitoring. Detainees are randomly assigned to judges, and ideological differences across judges... View Details
Keywords: Crime; Prison; Recidivism; Behavior; Situation or Environment; Crime and Corruption; Argentina
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Di Tella, Rafael, and Ernesto Schargrodsky. "Criminal Recidivism after Prison and Electronic Monitoring." Journal of Political Economy 121, no. 1 (February 2013): 28–73.
  • November 2023
  • Article

Open Source Software and Global Entrepreneurship

By: Nataliya Langburd Wright, Frank Nagle and Shane Greenstein
This is the first study to consider the relationship between open source software (OSS) and entrepreneurship around the globe. This study measures whether country-level participation on the GitHub OSS platform affects the founding of innovative ventures, and where it... View Details
Keywords: Entrepreneurship; Applications and Software; Business Ventures; Development Economics; Innovation and Invention; Global Range
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Wright, Nataliya Langburd, Frank Nagle, and Shane Greenstein. "Open Source Software and Global Entrepreneurship." Art. 104846. Research Policy 52, no. 9 (November 2023).
  • 2016
  • Working Paper

Reviews, Reputation, and Revenue: The Case of Yelp.com

By: Michael Luca
Do online consumer reviews affect restaurant demand? I investigate this question using a novel dataset combining reviews from the website Yelp.com and restaurant data from the Washington State Department of Revenue. Because Yelp prominently displays a restaurant's... View Details
Keywords: Revenue; Network Effects; Reputation; Social and Collaborative Networks; Food and Beverage Industry; Service Industry; Washington (state, US)
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Luca, Michael. "Reviews, Reputation, and Revenue: The Case of Yelp.com." Harvard Business School Working Paper, No. 12-016, September 2011. (Revised March 2016.)
  • winter 2000
  • Article

Assessing the Impact of Venture Capital to Innovation

By: Samuel Kortum and Josh Lerner
We examine the influence of venture capital on patented inventions in the United States across twenty industries over three decades. We address concerns about causality in several ways, including exploiting a 1979 policy shift that spurred venture capital fundraising.... View Details
Keywords: Venture Capital; Innovation and Invention
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Kortum, Samuel, and Josh Lerner. "Assessing the Impact of Venture Capital to Innovation." RAND Journal of Economics 31, no. 4 (winter 2000): 674–692. (Supplemental appendix.)
  • Article

Measuring the Scientific Effectiveness of Contact Tracing: Evidence from a Natural Experiment

By: Thiemo Fetzer and Thomas Graeber
Contact tracing has for decades been a cornerstone of the public health approach to epidemics, including Ebola, severe acute respiratory syndrome, and now COVID-19. It has not yet been possible, however, to causally assess the method’s effectiveness using a randomized... View Details
Keywords: COVID-19; Contact Tracing; Public Health; Infectious Diseases; Health Pandemics
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Fetzer, Thiemo, and Thomas Graeber. "Measuring the Scientific Effectiveness of Contact Tracing: Evidence from a Natural Experiment." Proceedings of the National Academy of Sciences 118, no. 33 (August 17, 2021): 1–4.
  • Teaching Interest

Overview

Paul is primarily interested in teaching data science to management students through the case method. This includes technical topics (programming and statistics) as well as higher-level management issues (digital transformation, data governance, etc.) As a research... View Details
Keywords: A/B Testing; AI; AI Algorithms; AI Creativity; Algorithm; Algorithm Bias; Algorithmic Bias; Algorithmic Fairness; Algorithms; Analytics; Application Program Interface; Artificial Intelligence; Causality; Causal Inference; Computing; Computers; Data Analysis; Data Analytics; Data Architecture; Data As A Service; Data Centers; Data Governance; Data Labeling; Data Management; Data Manipulation; Data Mining; Data Ownership; Data Privacy; Data Protection; Data Science; Data Science And Analytics Management; Data Scientists; Data Security; Data Sharing; Data Strategy; Data Visualization; Database; Data-driven Decision-making; Data-driven Management; Data-driven Operations; Datathon; Economics Of AI; Economics Of Innovation; Economics Of Information System; Economics Of Science; Forecast; Forecast Accuracy; Forecasting; Forecasting And Prediction; Information Technology; Machine Learning; Machine Learning Models; Prediction; Prediction Error; Predictive Analytics; Predictive Models; Analysis; AI and Machine Learning; Analytics and Data Science; Applications and Software; Digital Transformation; Information Management; Digital Strategy; Technology Adoption
  • Forthcoming
  • Article

Is Hybrid Work the Best of Both Worlds? Evidence from a Field Experiment

By: Prithwiraj Choudhury, Tarun Khanna, Christos A. Makridis and Kyle Schirmann
This paper reports causal evidence on how the extent of hybrid work—the number of days worked from home relative to days worked from office—affects employee attitudes and performance. Workers who spent around two days in the office each week on average self-reported... View Details
Keywords: Attitudes; Performance Consistency; Employees; Work-Life Balance
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Choudhury, Prithwiraj, Tarun Khanna, Christos A. Makridis, and Kyle Schirmann. "Is Hybrid Work the Best of Both Worlds? Evidence from a Field Experiment." Review of Economics and Statistics (forthcoming). (Pre-published online February 9, 2024.)
  • 2023
  • Working Paper

Fintech to the (Worker) Rescue: Access to Earned Wages, Financial Health and Employee Turnover

By: Jose Murillo, Boris Vallée and Dolly Yu
Using novel data from a Mexican FinTech firm, we study the usage by workers of earned wages access, an innovative financial service offered by firms to their employees as a benefit. We find usage to be significant and concentrated towards the end of the pay cycle. We... View Details
Keywords: Fintech; Present Bias; Earned Wage Access; Wages; Employees; Retention; Well-being; Mexico
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Murillo, Jose, Boris Vallée, and Dolly Yu. "Fintech to the (Worker) Rescue: Access to Earned Wages, Financial Health and Employee Turnover." Working Paper, 2023.
  • Research Summary

Overview

By: Isamar Troncoso
Professor Troncoso's research explores problems related to digital marketplaces and AI applications in marketing, and combines toolkits from econometrics, causal inference, and machine learning. She has studied how different platform design choices can lead to... View Details
  • June 2018
  • Article

Deviations from Covered Interest Rate Parity

By: Wenxin Du, Alexander Tepper and Adrien Verdelhan
We find that deviations from the covered interest rate parity (CIP) condition imply large, persistent, and systematic arbitrage opportunities in one of the largest asset markets in the world. Contrary to the common view, these deviations for major currencies are not... View Details
Keywords: Interest Rates; Financial Markets; Banks and Banking; Price
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Du, Wenxin, Alexander Tepper, and Adrien Verdelhan. "Deviations from Covered Interest Rate Parity." Journal of Finance 73, no. 3 (June 2018): 915–957.
  • 2021
  • Working Paper

Which Markets (Don't) Drive Pharmaceutical Innovation? Evidence From U.S. Medicaid Expansions

By: Craig Garthwaite, Rebecca Sachs and Ariel Dora Stern
Pharmaceutical innovation policy involves managing a tradeoff between high prices for new products in the short-term and stronger incentives to develop products for the future. Prior research has documented a causal relationship between market size and pharmaceutical... View Details
Keywords: Pharmaceuticals; Medicaid; Innovation and Invention; Policy; Markets; Research and Development; Pharmaceutical Industry
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Garthwaite, Craig, Rebecca Sachs, and Ariel Dora Stern. "Which Markets (Don't) Drive Pharmaceutical Innovation? Evidence From U.S. Medicaid Expansions." NBER Working Paper Series, No. 28755, May 2021.
  • March 2004
  • Article

Do Police Reduce Crime? Estimates Using the Allocation of Police Forces after a Terrorist Attack

By: Rafael Di Tella and Ernesto Schargrodsky
An important challenge in the crime literature is to isolate causal effects of police on crime. Following a terrorist attack on the main Jewish center in Buenos Aires, Argentina, in July 1994, all Jewish institutions received police protection. Thus, this hideous event... View Details
Keywords: Law Enforcement; Crime and Corruption; Resource Allocation; National Security
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Di Tella, Rafael, and Ernesto Schargrodsky. "Do Police Reduce Crime? Estimates Using the Allocation of Police Forces after a Terrorist Attack." American Economic Review 94, no. 1 (March 2004): 115–33.
  • 2022
  • Working Paper

Consumer Reviews and Regulation: Evidence from NYC Restaurants

By: Chiara Farronato and Georgios Zervas
We investigate the informativeness of hygiene signals in online reviews, and their effect on consumer choice and restaurant hygiene. We first extract signals of hygiene from Yelp. Among all dimensions that regulators monitor through mandated restaurant inspections, we... View Details
Keywords: Restaurants; Reviews; Hygiene; Yelp; Regulation; Food; Governing Rules, Regulations, and Reforms; Consumer Behavior
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Farronato, Chiara, and Georgios Zervas. "Consumer Reviews and Regulation: Evidence from NYC Restaurants." NBER Working Paper Series, No. 29715, February 2022.
  • December 2013
  • Article

How Do Staggered Boards Affect Shareholder Value? Evidence from a Natural Experiment

By: Alma Cohen and Charles C.Y. Wang
The well-established negative correlation between staggered boards (SBs) and firm value could be due to SBs leading to lower value or a reflection of low-value firms' greater propensity to maintain SBs. We analyze the causal question using a natural experiment... View Details
Keywords: Staggered Board; Takeover Defense; Antitakeover Provision; Proxy Fight; Tobin's; Firm Value; Agency Cost; Delaware; Chancery Court; Airgas; Governing and Advisory Boards; Corporate Governance
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Cohen, Alma, and Charles C.Y. Wang. "How Do Staggered Boards Affect Shareholder Value? Evidence from a Natural Experiment." Journal of Financial Economics 110, no. 3 (December 2013): 627–641.
  • 2023
  • Working Paper

Market Exclusivity and Innovation: Evidence From Antibiotics

By: Edward Kong and Olivia Zhao
The US incentivizes drug innovation via patents as well as market exclusivity periods awarded by the US Food and Drug Administration. We estimate the causal effects of extending market exclusivity for an important drug class: antibiotics. Using a... View Details
Keywords: Health Testing and Trials; Innovation and Invention; Motivation and Incentives; Government Administration; Government Legislation; Pharmaceutical Industry; United States
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Kong, Edward, and Olivia Zhao. "Market Exclusivity and Innovation: Evidence From Antibiotics." Working Paper, December 2023.
  • November 2022
  • Article

The Psychosocial Value of Employment: Evidence from a Refugee Camp

By: Reshmaan Hussam, Erin M. Kelley, Gregory Lane and Fatima Zahra
Employment may be important to wellbeing for reasons beyond its role as an income source. This paper presents a causal estimate of the psychosocial value of employment in refugee camps in Bangladesh. We involve 745 individuals in a field experiment with three arms: a... View Details
Keywords: Psychosocial Wellbeing; Employment; Refugees; Well-being
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Hussam, Reshmaan, Erin M. Kelley, Gregory Lane, and Fatima Zahra. "The Psychosocial Value of Employment: Evidence from a Refugee Camp." American Economic Review 112, no. 11 (November 2022): 3694–3724.
  • 2012
  • Article

Journalists and the Stock Market

By: Christopher Parsons, C. Dougal, J. Engelberg and D. Garcia
We use exogenous scheduling of Wall Street Journal columnists to identify a causal relation between financial reporting and stock market performance. To measure the media's unconditional effect, we add columnist fixed effects to a daily regression of excess Dow Jones... View Details
Keywords: Media; Financial Reporting; Financial Markets
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Parsons, Christopher, C. Dougal, J. Engelberg, and D. Garcia. "Journalists and the Stock Market." Review of Financial Studies 25, no. 3 (March 2012): 639–679.
  • October 2010
  • Journal Article

The Flattening Firm and Product Market Competition: The Effect of Trade Liberalization on Corporate Hierarchies

By: Maria Guadalupe and Julie Wulf
This paper establishes a causal effect of product market competition on various characteristics of organizational design. Using a unique panel-dataset on firm hierarchies of large U.S. firms (1986-1999) and a quasi-natural experiment (trade liberalization), we find... View Details
Keywords: Business Ventures; Product; Markets; Competition; Organizational Design; Governing Rules, Regulations, and Reforms; Rank and Position; Organizational Structure; Decision Choices and Conditions; Change; Trade; United States
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Guadalupe, Maria, and Julie Wulf. "The Flattening Firm and Product Market Competition: The Effect of Trade Liberalization on Corporate Hierarchies." American Economic Journal: Applied Economics 2, no. 4 (October 2010).
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