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- News (29)
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- Faculty Publications (256)
Show Results For
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All HBS Web
(458)
- News (29)
- Research (352)
- Events (12)
- Multimedia (1)
- Faculty Publications (256)
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- August 2015 (Revised January 2017)
- Technical Note
From Correlation to Causation
By: Feng Zhu and Karim R. Lakhani
To make sound business decisions, managers must be comfortable with the concepts of correlation and causation. This background note provides an overview of correlation and causation using examples and explains why the former does not imply the latter. It also describes...
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Zhu, Feng, and Karim R. Lakhani. "From Correlation to Causation." Harvard Business School Technical Note 616-009, August 2015. (Revised January 2017.)
- November 2023
- Article
Psychological Factors Underlying Attitudes toward AI Tools
By: Julian De Freitas, Stuti Agarwal, B. Schmitt and N. Haslam
What are the psychological factors driving attitudes toward AI tools, and how can resistance to AI systems be overcome when they are beneficial? In this perspective, we first organize the main sources of resistance into five main categories: opacity, emotionlessness,...
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De Freitas, Julian, Stuti Agarwal, B. Schmitt, and N. Haslam. "Psychological Factors Underlying Attitudes toward AI Tools." Nature Human Behaviour 7, no. 11 (November 2023): 1845–1854.
- 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...
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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
- 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...
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Keywords:
Salary;
Inequality;
Managers;
Career Concerns;
Pay Transparency;
Wages;
Equality and Inequality;
Perception;
Behavior
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.
- 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...
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Keywords:
Crime;
Prison;
Recidivism;
Behavior;
Situation or Environment;
Crime and Corruption;
Argentina
Di Tella, Rafael, and Ernesto Schargrodsky. "Criminal Recidivism after Prison and Electronic Monitoring." Journal of Political Economy 121, no. 1 (February 2013): 28–73.
- 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...
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Keywords:
Revenue;
Network Effects;
Reputation;
Social and Collaborative Networks;
Food and Beverage Industry;
Service Industry;
Washington (state, US)
Luca, Michael. "Reviews, Reputation, and Revenue: The Case of Yelp.com." Harvard Business School Working Paper, No. 12-016, September 2011. (Revised March 2016.)
- 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...
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Keywords:
User-generated Content;
Crowdsourcing;
Design Economics;
Internet and the Web;
Marketing;
Economics;
Media;
Social Media
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.
- 2022
- Working Paper
Turning Away From the State: Trade Shocks and Informal Insurance in Brazil
By: Paula Rettl
How does economic globalization affect vote choices? Conventional wisdom holds that voters who lose from economic integration support parties that propose to expand the welfare state. I argue that a key scope condition of this causal relationship is expectations about...
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Keywords:
Economic Globalization;
Globalized Economies;
Government Administration;
Economics;
Globalization;
Globalized Economies and Regions;
Voting;
Brazil;
Latin America
Rettl, Paula. "Turning Away From the State: Trade Shocks and Informal Insurance in Brazil." Working Paper, August 2022.
- Forthcoming
- Article
Is Hybrid Work the Best of Both Worlds? Evidence from a Field Experiment
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...
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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.)
- 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...
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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.
- 2023
- Working Paper
The Uneven Impact of Generative AI on Entrepreneurial Performance
By: Nicholas G. Otis, Rowan Clarke, Solène Delecourt, David Holtz and Rembrand Koning
There is a growing belief that scalable and low-cost AI assistance can improve firm
decision-making and economic performance. However, running a business involves
a myriad of open-ended problems, making it hard to generalize from recent studies
showing that...
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Keywords:
AI and Machine Learning;
Performance Improvement;
Small Business;
Decision Choices and Conditions;
Kenya
Otis, Nicholas G., Rowan Clarke, Solène Delecourt, David Holtz, and Rembrand Koning. "The Uneven Impact of Generative AI on Entrepreneurial Performance." Harvard Business School Working Paper, No. 24-042, December 2023.
- 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...
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Keywords:
Entrepreneurship;
Applications and Software;
Business Ventures;
Development Economics;
Innovation and Invention;
Global Range
Wright, Nataliya Langburd, Frank Nagle, and Shane Greenstein. "Open Source Software and Global Entrepreneurship." Art. 104846. Research Policy 52, no. 9 (November 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...
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- 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...
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Keywords:
Restaurants;
Reviews;
Hygiene;
Yelp;
Regulation;
Food;
Governing Rules, Regulations, and Reforms;
Consumer Behavior
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...
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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
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.
- 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....
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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.)
- 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...
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Keywords:
Pharmaceuticals;
Medicaid;
Innovation and Invention;
Policy;
Markets;
Research and Development;
Pharmaceutical Industry
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...
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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.
- 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...
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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...
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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.