Publications
Publications
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- Faculty Publications (602)
- March 2022 (Revised January 2025)
- Technical Note
Linear Regression
By: Iavor I. Bojinov, Michael Parzen and Paul Hamilton
This note provides an overview of linear regression for an introductory data science course. It begins with a discussion of correlation, and explains why correlation does not necessarily imply causation. The note then describes the method of least squares, and how to... View Details
- March 2022 (Revised January 2025)
- Technical Note
Statistical Inference
By: Iavor I. Bojinov, Michael Parzen and Paul Hamilton
This note provides an overview of statistical inference for an introductory data science course. First, the note discusses samples and populations. Next the note describes how to calculate confidence intervals for means and proportions. Then it walks through the logic... View Details
- 2022
- Working Paper
Do Startups Benefit from Their Investors' Reputation? Evidence from a Randomized Field Experiment
By: Shai Benjamin Bernstein, Kunal Mehta, Richard Townsend and Ting Xu
We analyze a field experiment conducted on AngelList Talent, a large online search platform for startup jobs. In the experiment, AngelList randomly informed job seekers of whether a startup was funded by a top-tier investor and/or was funded recently. We find that the... View Details
- March 2022 (Revised April 2022)
- Case
In Search of Global Regulation
By: Geoffrey Jones and Mona Rahmani
The history of the international regulation of global capitalism is surveyed, addressing the challenges facing firms confronting international, national, and regional regulation. Follows the history of global regulation after 1914, from the League of Nations;... View Details
- 2022
- Working Paper
Can a Website Bring Unemployment Down? Experimental Evidence from France
By: Aïcha Ben Dhia, Bruno Crépon, Esther Mbih, Louise Paul-Delvaux, Bertille Picard and Vincent Pons
We evaluate the impact of an online platform giving job seekers tips to improve their search and recommendations of new occupations and locations to target, based on their personal data and labor market data. Our experiment used an encouragement design and was... View Details
- 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
- Article
Policies to Influence Perceptions about COVID-19 Risk: The Case of Maps
By: Claudia Engel, Jonathan Rodden and Marco Tabellini
Choropleth disease maps have become an important tool for informing the public about the risks posed by COVID-19. In a survey conducted in the U.S. state of Georgia in June 2020, we randomly assigned respondents to view either of two maps. The first one reported... View Details
- March 2022
- Article
Sensitivity Analysis of Agent-based Models: A New Protocol
By: Emanuele Borgonovo, Marco Pangallo, Jan Rivkin, Leonardo Rizzo and Nicolaj Siggelkow
Agent-based models (ABMs) are increasingly used in the management sciences. Though useful, ABMs are often critiqued: it is hard to discern why they produce the results they do and whether other assumptions would yield similar results. To help researchers address such... View Details
- February 2022 (Revised May 2022)
- Case
Jaypee Infratech and the Indian Bankruptcy Code
By: Kristin Mugford, William Vrattos and Radhika Kak
In 2016, India passed a new bankruptcy law (IBC) to counter a brewing bank crisis and increased corporate distress. Homebuilder Jaypee Infratech, one of India largest distressed companies (the “dirty dozen”) began restructuring under the IBC in 2017. Two years later,... View Details
Keywords: Restructuring; Decisions; Judgments; Voting; Developing Countries and Economies; Financial Crisis; Public Sector; Asset Pricing; Borrowing and Debt; Corporate Finance; Credit; Insolvency and Bankruptcy; Debt Securities; Bonds; Investment Return; Price; Government Legislation; Laws and Statutes; Bids and Bidding; Business and Stakeholder Relations; Risk and Uncertainty; Valuation; Real Estate Industry; India; Delhi
- 2022
- Working Paper
The Disagreement Problem in Explainable Machine Learning: A Practitioner's Perspective
By: Satyapriya Krishna, Tessa Han, Alex Gu, Javin Pombra, Shahin Jabbari, Steven Wu and Himabindu Lakkaraju
As various post hoc explanation methods are increasingly being leveraged to explain complex models in high-stakes settings, it becomes critical to develop a deeper understanding of if and when the explanations output by these methods disagree with each other, and how... View Details
- Article
A 680,000-Person Megastudy of Nudges to Encourage Vaccination in Pharmacies
By: Katherine L. Milkman, Linnea Gandhi, Mitesh S. Patel, Heather N. Graci, Dena M. Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Jake Rothschild, Jonathan E. Bogard, Ilana Brody, Christopher F. Chabris, Edward Chang, Gretchen B. Chapman, Jennifer E. Dannals, Noah J. Goldstein, Amir Goren, Hal Hershfield, Alex Hirsch, Jillian Hmurovic, Samantha Horn, Dean Karlan, Ariella S. Kristal, Cait Lamberton, Michael N. Meyer, Allison H. Oakes, Maurice E. Schweitzer, Maheen Shermohammed, Jaochim H. Talloen, Caleb Warren, Ashley V. Whillans, Kuldeep N. Yadav, Julian J. Zlatev, Ron Berman, Chalanda N. Evans, Rahul Ladhania, Jens Ludwig, Nina Mazar, Sendhil Mullainathan, Christopher K. Snider, Jann Spiess, Eli Tsukayama, Lyle Ungar, Christophe Van den Bulte, Kevin G. Volpp and Angela L. Duckworth
Encouraging vaccination is a pressing policy problem. To assess whether text-based reminders can encourage pharmacy vaccination and what kinds of messages work best, we conducted a megastudy. We randomly assigned 689,693 Walmart pharmacy patients to receive one of 22... View Details
- Article
Costs Without Value When Treating Pediatric Behavioral Patients in the ED
By: Marcella Jewell, Syed S. Shehab, Robert S. Kaplan, Jack Fanton and Joeli Hettler
Pediatric Emergency Department (ED) visits have greatly increased in recent years. An academic pediatric ED that annually treats about 1,000 behavioral health patients conducted a study to assess the true cost of caring for nonacute behavioral health patients. It... View Details
- 2022
- Article
Alleviating Time Poverty Among the Working Poor: A Pre-Registered Longitudinal Field Experiment
By: A.V. Whillans and Colin West
Poverty entails more than a scarcity of material resources—it also involves a shortage of time. To examine the causal benefits of reducing time poverty, we conducted a longitudinal feld experiment over six consecutive weeks in an urban slum in Kenya with a sample of... View Details
Keywords: Time; Subjective Well Being; Administrative Costs; Friction; Poverty; Well-being; Money; Perception; Kenya
- January 10, 2022
- Article
The Link Between Income, Income Inequality, and Prosocial Behavior Around the World: A Multiverse Approach
By: Lucia Macchia and Ashley V. Whillans
The questions of whether high-income individuals are more prosocial than low-income individuals and whether income inequality moderates this effect have received extensive attention. We shed new light on this topic by analyzing a large-scale dataset with a... View Details
- January 2022
- Article
Global Behaviors, Perceptions, and the Emergence of Social Norms at the Onset of the COVID-19 Pandemic
By: Lukas Hensel, Marc Witte, Stefano Caria, Thiemo Fetzer, Stefano Fiorin, Friedrich M. Goetz, Margarita Gomez, Johannes Haushofer, Andriy Ivchenko, Gordon T. Kraft-Todd, Elena Reutskaja, Christopher Roth, Erez Yoeli and Jon M. Jachimowicz
We conducted a large-scale survey covering 58 countries and over 100,000 respondents between late March and early April 2020 to study beliefs and attitudes towards citizens' and governments' responses at the onset of the COVID-19 pandemic. Most respondents reported... View Details
- 2022
- Book
Leadership to Last: How Great Leaders Leave Legacies Behind
By: Geoffrey Jones and Tarun Khanna
Society tends to glorify the get-rich-quick entrepreneur who builds a company, takes it public and then (maybe) contributes to charity.
In Leadership to Last, Geoffrey Jones and Tarun Khanna discuss the interviews they and other Harvard faculty have undertaken... View Details
- November 2021
- Case
Steve Schwarzman on Dealmaking I: “Becoming a ‘Friend of the Situation’” (A)
By: James K. Sebenius and Alex Green
Blackstone Co-founder, Chairman, and CEO Stephen A. Schwarzman, whom Forbes has called “Wall Street’s Greatest Dealmaker,” played a major role in the negotiations that transformed Blackstone from a fragile startup in 1985 with $400,000 in capital into a dominant... View Details
- November 2021
- Case
Steve Schwarzman on Dealmaking II: When They Hold All the Cards (A)
By: James K. Sebenius and Alex Green
Blackstone Co-founder, Chairman, and CEO Stephen A. Schwarzman, whom Forbes has called “Wall Street’s Greatest Dealmaker,” played a major role in the negotiations that transformed Blackstone from a fragile startup in 1985 with $400,000 in capital into a dominant... View Details
- November 2021
- Case
Tommy Hilfiger Adaptive: Fashion for All
By: Elizabeth A. Keenan, Sandra J. Sucher and Shalene Gupta
In Fall 2017, Tommy Hilfiger launched Tommy Hilfiger Adaptive, a line of adaptive and inclusive fashion apparel intended to make dressing easier. Now, Tommy Hilfiger is planning to launch Tommy Hilfiger Adaptive internationally in early 2020. The prospect of making... View Details
Keywords: Marketing And Society; Brands; Fashion; Inclusion; Consumer; Corporate Social Responsibility; Retail; Apparel; Disability; Accessibility; Marketing; Brands and Branding; Marketing Communications; Product Marketing; Social Marketing; Product Launch; Product Positioning; Marketing Strategy; Social Enterprise; Society; Corporate Social Responsibility and Impact; Social Issues; Consumer Behavior; Fashion Industry; Consumer Products Industry; Apparel and Accessories Industry; Retail Industry; United States; North America
- Article
Drive Innovation with Better Decision-Making
By: Linda A. Hill, Emily Tedards and Taran Swan
Despite their embrace of agile methods, many firms striving to innovate are struggling to produce breakthrough ideas. A key culprit, according to the authors, is an outdated, inefficient approach to decision-making. Today’s discovery-driven innovation processes involve... View Details