Publications
Publications
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- All HBS Web
(986)
- Faculty Publications (201)
- 2023
- Working Paper
Causal Interpretation of Structural IV Estimands
By: Isaiah Andrews, Nano Barahona, Matthew Gentzkow, Ashesh Rambachan and Jesse M. Shapiro
We study the causal interpretation of instrumental variables (IV) estimands of nonlinear, multivariate structural models with respect to rich forms of model misspecification. We focus on guaranteeing that the researcher's estimator is sharp zero consistent, meaning... View Details
Keywords: Mathematical Methods
- October 2023
- Article
Improving Regulatory Effectiveness Through Better Targeting: Evidence from OSHA
By: Matthew S. Johnson, David I. Levine and Michael W. Toffel
We study how a regulator can best target inspections. Our case study is a U.S. Occupational Safety and Health Administration (OSHA) program that randomly allocated some inspections. On average, each inspection averted 2.4 serious injuries (9%) over the next five years.... View Details
- June 14, 2023
- Article
Research: Your Love for Work May Alienate Your Colleagues
By: Mijeong Kwon, Julia Lee Cunningham and Jon M. Jachimowicz
Research shows that employees who are passionate about their work are more productive, innovative, and collaborative. New research suggests that these employees also see passion for work as a moral imperative, and they’re more likely to judge colleagues who are... View Details
- 2023
- Article
A Randomized Trial of Behavioral Nudges Delivered through Text Messages to Increase Influenza Vaccination among Patients with an Upcoming Primary Care Visit
By: Mitesh S. Patel, Katherine L. Milkman, Linnea Gandhi, Heather N. Graci, Dena Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Jake Rothschild, Modupe Akinola, John Beshears, Jonathan E. Bogard, Alison Buttenheim, Christopher Chabris, Gretchen B. Chapman, James J. Choi, Hengchen Dai, Craig R. Fox, Amir Goren, Matthew D. Hilchey, Jillian Hmurovic, Leslie John, Dean Karlan, Melanie Kim, David Laibson, Cait Lamberton, Brigitte C. Madrian, Michelle N. Meyer, Maria Modanu, Jimin Nam, Todd Rogers, Renante Rondina, Silvia Saccardo, Maheen Shermohammed, Dilip Soman, Jehan Sparks, Caleb Warren, Megan Weber, Ron Berman, Chalanda N. Evans, Seung Hyeong Lee, Christopher K. Snider, Eli Tsukayama, Christophe Van den Bulte, Kevin G. Volpp and Angela L. Duckworth
Purpose: To evaluate if nudges delivered by text message prior to an upcoming primary care visit can increase influenza vaccination rates.
Design: Randomized, controlled trial.
Setting: Two health systems in the Northeastern US between September 2020 and... View Details
Design: Randomized, controlled trial.
Setting: Two health systems in the Northeastern US between September 2020 and... View Details
- 2022
- Chapter
Prioritarianism and Optimal Taxation
By: Matti Tuomala and Matthew Weinzierl
Prioritarianism has been at the center of the formal approach to optimal tax theory since its modern starting point in Mirrlees (1971), but most theorists’ use of it is motivated by tractability rather than explicit normative reasoning. We characterize analytically and... View Details
Keywords: Prioritarianism; Optimal Taxation; Utilitarianism; Redistribution; Inverse-optimum; Taxation; Theory; Policy
- March 2022 (Revised June 2022)
- Case
The United States National Security Apparatus, Multipolarity, and the Rise of Commercial Space
By: Matthew C. Weinzierl and Brendan L. Rosseau
In 2019, the U.S. national security community crossed a Rubicon by declaring that space was “a war-fighting domain” and undergoing a major reorganization, including the creation of the U.S. Space Force, the first new military branch in over 70 years. Military and... View Details
- March 2022 (Revised March 2023)
- Case
Commercial Space Stations, Chickens and Eggs, and Demand for Activity in Low-Earth Orbit
By: Matthew C. Weinzierl and Brendan L. Rosseau
With the International Space Station set to retire in January 2031, NASA has made clear its desire to transition to commercially-led space stations in low-earth orbit (LEO). But the history of commercial station attempts has been fraught, characterized by a lack of... View Details
- February 2022
- Article
OMG! My Boss Just Friended Me: How Evaluations of Colleagues' Disclosure, Gender, and Rank Shape Personal/Professional Boundary Blurring Online
By: Nancy Rothbard, Lakshmi Ramarajan, Ariane Ollier-Malaterre and Serenity Lee
We propose and test a relational boundary-blurring framework, examining how employees’ evaluations of colleagues’ characteristics drive their decisions to connect with colleagues as friends online. We use a multi-method approach across four studies to investigate how... View Details
- December 2021
- Article
Seeing Oneself as a Valued Contributor: Social Worth Affirmation Improves Team Information Sharing
By: Julia Lee Cunningham, Francesca Gino, Dan Cable and Bradley Staats
Teams often fail to reach their potential because members’ concerns about being socially accepted prevent them from offering their unique perspectives to the team. Drawing on relational self and self-affirmation theory, we argue that affirmation of team members’ social... View Details
- 2021
- Article
Venture Capital Booms and Startup Financing
By: William Janeway, Ramana Nanda and Matthew Rhodes-Kropf
We review the growing literature on the relationship between venture capital booms and startup financing, focusing on three broad areas: First, we discuss the drivers of large inflows into the venture capital asset class, particularly in recent years—which are related... View Details
- October 26, 2021
- Article
Value Chain Management to Implement Post-COVID-19 Health Care Strategy: The COVID-19 Crisis Has Created Areas of Innovation That Should Be Embraced by Health Care Leaders
By: Michael E. Porter, Junaid Nabi and Thomas H. Lee
Health care organizations must learn from what has worked during the COVID-19 crisis. Leaders have found that while they cannot do everything, they must define and manage the sequence of activities required to deliver high-value care. View Details
- September 2021 (Revised December 2021)
- Case
Spire, the CubeSat Revolution, and the Government as a Space Data Customer
By: Matthew Weinzierl, Mehak Sarang and Brendan L. Rosseau
This case outlines the rise of Spire Global, a young space company using CubeSats to provide weather data and weather prediction services. In addition to tracing the evolution of a space startup from novel idea to publicly-traded company, the case also examines the... View Details
- 9 Jul 2021
- Interview
Matthew Barzun and Amy Edmondson
By: Amy C. Edmondson and Matthew Barzun
Writer Matthew Barzun speaks with Harvard Professor and author Amy Edmondson about Barzun's book, "The Power of Giving Away Power: How the Best Leaders Learn to Let Go". Matthew Barzun has served as U.S. ambassador to the United Kingdom and Sweden. He served as... View Details
- Article
The Economic Consequences of Bankruptcy Reform
By: Tal Gross, Raymond Kluender, Feng Liu, Matthew J. Notowidigdo and Jialan Wang
A more generous consumer bankruptcy system provides greater insurance against financial risks but may also raise the cost of credit. We study this trade-off using the 2005 Bankruptcy Abuse Prevention and Consumer Protection Act (BAPCPA), which increased the costs of... View Details
- June 2021 (Revised December 2021)
- Case
The Lunar Gateway, Moon vs. Mars, and the Political Governance of Space Activities
By: Matthew C. Weinzierl and Mehak Sarang
In 2017, the Trump Administration made a bold claim—that they would return the next man and the first woman to the lunar surface by 2024, this time to establish a sustainable presence to enable further exploration in the solar system. With the Artemis Program, NASA has... View Details
Keywords: Space; Space Economy; Aerospace; Nasa; Governance; Policy; International Relations; Infrastructure
- 2021
- Article
Designing, Not Checking, for Policy Robustness: An Example with Optimal Taxation
By: Benjamin B. Lockwood, Afras Sial and Matthew C. Weinzierl
Economists typically check the robustness of their results by comparing them across plausible ranges of parameter values and model structures. A preferable approach to robustness—for the purposes of policymaking and evaluation—is to design policy that takes these... View Details
- Article
A Megastudy of Text-Based Nudges Encouraging Patients to Get Vaccinated at an Upcoming Doctor's Appointment
By: Katherine L. Milkman, Mitesh S. Patel, Linnea Gandhi, Heather N. Graci, Dena M. Gromet, Hung Ho, Joseph S. Kay, Timothy W. Lee, Modupe Akinola, John Beshears, Jonathan E. Bogard, Alison Buttenheim, Christopher F. Chabris, Gretchen B. Chapman, James J. Choi, Hengchen Dai, Craig R. Fox, Amir Goren, Matthew D. Hilchey, Jillian Hmurovic, Leslie K. John, Dean Karlan, Melanie Kim, David Laibson, Cait Lamberton, Brigitte C. Madrian, Michelle N. Meyer, Maria Modanu, Jimin Nam, Todd Rogers, Renante Rondina, Silvia Saccardo, Maheen Shermohammed, Dilip Soman, Jehan Sparks, Caleb Warren, Megan Weber, Ron Berman, Chalanda N. Evans, Christopher K. Snider, Eli Tsukayama, Christophe Van den Bulte, Kevin G. Volpp and Angela L. Duckworth
Many Americans fail to get life-saving vaccines each year, and the availability of a vaccine for COVID-19 makes the challenge of encouraging vaccination more urgent than ever. We present a large field experiment (N = 47,306) testing 19 nudges delivered to patients via... View Details
Keywords: Vaccination; COVID-19; Nudge; Influenza; Field Experiment; Health; Communication Strategy; Behavior
- May 2021 (Revised May 2022)
- Case
Headspace vs. Calm: A Mindful Competition
By: Ayelet Israeli and Anne Wilson
By 2021, the mindfulness app wars reached their apex. Over 2,000 meditation apps were available to consumers, but two apps, Headspace and Calm, dominated the space, jointly holding about 70% of the total market. Headspace had established itself as the approachable... View Details
Keywords: Marketing Communication; Integrated Strategy; Brand; Brand ＆ Product Management; Brand Communication; Brand Differentiation; Brand Building; Brand Management; E-Commerce Strategy; Ecommerce; App; App Development; Applications; COVID; COVID-19; Pandemic; Pricing; Pricing Strategy; Subscription Model; Subscription; Partnerships; Strategic Partnerships; B2B Vs. B2C; B2B; Health ＆ Wellness; Wellbeing; Digitization; Commoditization; Mobile App; Mobile App Industry; Mobile Healthcare; Mobile Marketing; Digital Brand; Digital Health; Consumer Health; Apps; Online Business; Online Competition; Online Community; Online Entertainment; Entertainment And Leisure; Meditation; Marketing; Marketing Communications; Brands and Branding; Price; Strategy; Competition; Competitive Strategy; Competitive Advantage; Partners and Partnerships; Health; Well-being; Mobile and Wireless Technology; Communication; Communication Strategy; Disruption; Consumer Behavior; Digital Marketing; E-commerce; Applications and Software; Health Industry; Technology Industry; Communications Industry; United States; North America; United Kingdom
- 2021
- Article
Everyday Illiberalism: How Hungarian Subnational Politics Propel Single-Party Dominance
By: Laura Jakli and Matthew Stenberg
While numerous studies consider the roles that media consolidation, court-packing, and economic crises have played in Hungary's democratic decline since 2010, none have considered the subnational mechanisms driving illiberalism. This study examines the types of... View Details
- January 2021
- Article
A Model of Relative Thinking
By: Benjamin Bushong, Matthew Rabin and Joshua Schwartzstein
Fixed differences loom smaller when compared to large differences. We propose a model of relative thinking where a person weighs a given change along a consumption dimension by less when it is compared to bigger changes along that dimension. In deterministic settings,... View Details