Heterogeneous Treatment Effect - Publications - Faculty & Research - Harvard Business School

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Forthcoming
Article

Loss of Peers and Individual Worker Performance: Evidence From H-1B Visa Denials

By: Prithwiraj Choudhury, Kirk Doran, Astrid Marinoni and Chungeun Yoon

We study how restrictive immigration policies that result in the unexpected loss of co-workers affect the performance of skilled migrants employed in organizations. Specifically, we examine the impact of the loss of team members on their co-workers’ performance in... View Details

Keywords: Immigration; Performance Productivity; Employees; Human Capital; Ethnicity; Groups and Teams

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2023
Working Paper

Estimating Productivity in the Presence of Spillovers: Firm-Level Evidence from the U.S. Production Network

By: Ebehi Iyoha

This paper examines the extent to which productivity gains are transmitted across U.S. firms through buyer-supplier relationships. Many empirical studies measure firm-to-firm spillovers using firm-level productivity estimates derived from control function approaches.... View Details

Keywords: Supply and Industry; Partners and Partnerships; Production

2020
Working Paper

Mission-Oriented Research in a National Emergency: Lessons from the Office of Scientific Research and Development in World War II

By: Daniel P. Gross and Bhaven N. Sampat

Since the beginning of the present COVID-19 pandemic, policymakers, researchers, and journalists have made repeated comparisons to World War II. In ongoing research, we have been studying the effects of the World War II research effort, which included a major medical... View Details

Keywords: Innovation and Invention; Research and Development; Problems and Challenges; War; History; Government Administration; United States

March 2018
Teaching Note

Twine Health

By: Robert S. Huckman and Ariel D. Stern

In late 2014, Dr. John Moore (CEO), Frank Moss (chairman), and Scott Gilroy (CTO) of Twine Health (Twine) had to resolve several challenges that threatened to restrict the widespread dissemination of its sole product, Twine. Twine was a cloud-based platform that... View Details

Keywords: Health Care; Chronic Disease; Digital Health; Health Acceleration Challenge; Strategy; Disease Management; Health; Health Care and Treatment; Information Technology; Mobile and Wireless Technology; Technology Adoption; Health Industry; United States; Massachusetts

2024
Working Paper

Fiscal Policy under Convex Supply Curves

By: Shlok Goyal, Avi Lipton and Borui Niklas Zhu

Recent empirical evidence suggests that supply curves are convex. Supply curve convexity is at odds with conventional Phillips curves, which rely on an infinitely elastic underlying supply curve. This paper explores the effect of supply curve convexity on the... View Details

Keywords: Fiscal Stimulus; Fiscal Policy; Inflation; Inflation and Deflation; Macroeconomics; Policy; Mathematical Methods; United States

2020
Working Paper

Design and Analysis of Switchback Experiments

By: Iavor I Bojinov, David Simchi-Levi and Jinglong Zhao

In switchback experiments, a firm sequentially exposes an experimental unit to a random treatment, measures its response, and repeats the procedure for several periods to determine which treatment leads to the best outcome. Although practitioners have widely adopted... View Details

Keywords: Switchback Experiments; Design; Analysis; Mathematical Methods

2022
Book

The Role of Innovation and Entrepreneurship in Economic Growth

By: Michael J. Andrews, Aaron Chatterji, Josh Lerner and Scott Stern

We live in an era in which innovation and entrepreneurship seem ubiquitous, particularly in regions like Silicon Valley, Boston, and the Research Triangle Park. But many metrics of economic growth, such as productivity growth and business dynamism, have been at best... View Details

Keywords: Productivity Growth; Production Technologies; Innovation and Invention; Entrepreneurship; Economic Growth; Competition; Organizational Design; Economic Slowdown and Stagnation

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2019
Working Paper

Labor Market Shocks and the Demand for Trade Protection: Evidence from Online Surveys

By: Rafael Di Tella and Dani Rodrik

We study preferences for government action in response to layoffs resulting from different types of labor-market shocks. We consider the following shocks: technological change, a demand shift, bad management, and three kinds of international outsourcing. Respondents... View Details

Keywords: Labor; Markets; System Shocks; Trade; Attitudes; Surveys

Article

The Perils of Proactive Churn Prevention Using Plan Recommendations: Evidence from a Field Experiment

By: Eva Ascarza, Raghuram Iyengar and Martin Schleicher

Facing the issue of increasing customer churn, many service firms have begun recommending pricing plans to their customers. One reason behind this type of retention campaign is that customers who subscribe to a plan suitable for them should be less likely to churn... View Details

Keywords: Churn/retention; Field Experiment; Pricing; Tariff/plan Choice; Targeting; Customer Relationship Management; Price; Performance Effectiveness

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Article

Time-driven Activity-based Costing of Multivessel Coronary Artery Bypass Grafting across National Boundaries to Identify Improvement Opportunities: Study Protocol

By: F. Erhun, B. Mistry, T. Platcheck, A. Milstein, V.G. Narayanan and R. S. Kaplan

Coronary artery bypass graft (CABG) surgery is a common treatment for coronary artery disease—a disease that affects over 10% of US adults and is a major cause of morbidity and mortality. In 2005, the mean cost for a CABG procedure among Medicare beneficiaries in the... View Details

Keywords: Activity Based Costing and Management; Health Disorders; Health Care and Treatment; United States; India

September 2020
Case

Minerva 2004: Discovery

By: John R. Wells and Benjamin Weinstock

After nearly five years in operation, Doctor Cynthia Bamdad, founder and CEO of Minerva Biotechnologies Corporation (Minerva), was reflecting on the company’s next steps. In a few short years, she and her small team had managed to develop a nanoparticle process for... View Details

Keywords: Entrepreneurship; Financing and Loans; Strategy; Decision Choices and Conditions; Biotechnology Industry

July 2023
Article

Design and Analysis of Switchback Experiments

By: Iavor I Bojinov, David Simchi-Levi and Jinglong Zhao

In switchback experiments, a firm sequentially exposes an experimental unit to a random treatment, measures its response, and repeats the procedure for several periods to determine which treatment leads to the best outcome. Although practitioners have widely adopted... View Details

Keywords: Switchback Experiments; Design; Analysis; Mathematical Methods

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November 2009 (Revised August 2010)
Case

NovoCure Ltd.

By: William A. Sahlman and Sarah Flaherty

Venture capitalist William Doyle must raise $35 million for a portfolio company with a promising, novel cancer therapy, just as global capital markets are imploding in the fall of 2008. NovoCure, Ltd., has developed an electrical-field-based therapy, called Tumor... View Details

Keywords: Financial Crisis; Entrepreneurship; Venture Capital; Investment; Health Care and Treatment; Health Testing and Trials; Technological Innovation; Financial Services Industry

Research Summary

The Global Networks of Multinational Firms (with Maggie Chen)

By: Laura Alfaro

In this paper we characterize the topology of global multinational networks and examine the macro and micro patterns of multinational activity. We construct indices of network density at both pairwise industry and establishment level and measure agglomeration in a... View Details

2016
Case

Advanced Leadership Pathways: Alberto Mora and the Costs and Consequences of Torture

By: Rosabeth M. Kanter and Benjamin Summers

Alberto Mora's time as General Counsel of the Navy from 2001–2006 greatly influenced his mission to illuminate the policy consequences of torture. Mora's drive to restore the nation's awareness and conscience against torture was gaining traction. Prominent... View Details

Keywords: Leadership Skills; Torture; Costs And Consequences; Humane; Restraint; Human Dignity; Treatment Of Prisoners; Prison; Repression; Opposition; Revolution; Democracy; Communism; International Affairs; Public Service; September 11; War On Terror; Operation Enduring Freedom; Guantanamo; Cuba; Coalition; Working Group; Cruelty; Interrogation; Memorandum; American Law; Authority; Authoritative; Quadrennial Defense Review; National Defense Authorization Act; Public Engagement; Advocacy; Law; Accountability; Center For The Victims Of Torture; Human Rights; Public Policy; Legality; Morality; Legal System; Tactical Military Operations; West Point; NGO; Human Rights First; American Civil Liberties Union; Human Rights Watch; Amnesty International; Constitution Project; Center For Constitutional Rights; Strategic Military Effect; National Security; Weapon; Terrorism; Prisoners Of War; Abu Ghraib; Pentagon; Ethics; Moral Sensibility; Leadership; Rights; Policy; Public Opinion; United States

January–February 2021
Article

Making Space for Emotions: Empathy, Contagion, and Legitimacy’s Double-Edged Sword

By: Andreea Gorbatai, Cyrus Dioun and Kisha Lashley

Legitimacy is critical to the formation and expansion of nascent fields because it lends credibility and recognizability to once overlooked actors and practices. At the same time, legitimacy can be a double-edged sword precisely because it facilitates field growth,... View Details

Keywords: Legitimacy; Collective Identity; Emotional Contagion; Field-congifiguring Events; Empathy; Natural Language Processing; Mixed Methods; Organizational Culture; Emotions; Groups and Teams

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2018
Working Paper

Taxation and Innovation in the 20th Century

By: Ufuk Akcigit, John Grigsby, Tom Nicholas and Stefanie Stantcheva

This paper studies the effect of corporate and personal taxes on innovation in the United States over the 20th century. We use three new datasets: a panel of the universe of inventors who patent since 1920; a dataset of the employment, location, and patents of firms... View Details

Keywords: Taxation; Innovation and Invention; History; United States

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The Psychosocial Value of Employment

In settings where employment opportunities are scarce, the inability to work may generate psychosocial harm. This paper presents a causal estimate of the psychosocial value of employment in the Rohingya refugee camps of Bangladesh. We engage 745 individuals in a field... View Details

June 28, 2011
Article

Using Implementation Intentions Prompts to Enhance Influenza Vaccination Rates

By: Katherine L Milkman, John Beshears, James J. Choi, David Laibson and Brigitte C. Madrian

We evaluate the results of a field experiment designed to measure the effect of prompts to form implementation intentions on realized behavioral outcomes. The outcome of interest is influenza vaccination receipt at free on-site clinics offered by a large firm to its... View Details

Keywords: Behavioral Economics; Nudge; Libertarian Paternalism; Public Health; Flu Shot; Behavior; Consumer Behavior; Health Care and Treatment; Cognition and Thinking

2018
Working Paper

When to Take the Leap: The Antecedents and Consequences of Leapfrog CEOs

By: J. Yo-Jud Cheng

Much of the prior research on CEO successions focuses on differences between CEOs appointed from within the firm and those appointed from outside; however, this dichotomy neglects significant heterogeneity in CEOs’ career trajectories. In this study, I examine the... View Details

Keywords: Management Succession; Organizational Change and Adaptation; Innovation and Management

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