Publications

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February 2023 (Revised March 2023)
Case

Hey, Insta & YouTube, Are You Watching TikTok?

By: Felix Oberholzer-Gee

In early 2023, the entertainment app TikTok reached close to 1 billion users globally, placing it 4th behind the leading social networks of Facebook, YouTube, and Instagram. Featuring a sophisticated recommendation engine, TikTok mastered the art of keeping users... View Details

Keywords: Social Media; Applications and Software; Business Model; Competition; Organizational Change and Adaptation

Educators

February 2023
Case

All Options on the Table: The Haber Family

By: Lauren Cohen, Grace Headinger and Juan Ruiz

Frida Jassan Haber, second-generation Chief Financial Officer of Haber Holdings, deliberated over the right family office solution for their family’s needs. After years of working with trusted private bankers, the family had decided to pursue other options that offered... View Details

Keywords: Latin America; Mexico; Family Business; Financial Institutions; Decision Making; Fashion Industry; Financial Services Industry; Latin America; Mexico

Educators

February 2023 (Revised March 2025)
Module Note

LCA Module Overview: Employees

By: Nien-hê Hsieh

This note provides an overview of key questions, themes, and concepts to be covered in the module and provides a brief description of each case and how it relates to these questions, themes, and concepts. View Details

February 2023 (Revised October 2024)
Teaching Note

Sarah Breedlove: Changing the World

By: Robert Simons and Shirley Sun

Teaching Note for HBS Case No. 121-060. View Details

2023
Working Paper

Distributionally Robust Causal Inference with Observational Data

By: Dimitris Bertsimas, Kosuke Imai and Michael Lingzhi Li

We consider the estimation of average treatment effects in observational studies and propose a new framework of robust causal inference with unobserved confounders. Our approach is based on distributionally robust optimization and proceeds in two steps. We first... View Details

Keywords: AI and Machine Learning; Mathematical Methods

February 2023
Article

A Different Framework to Achieve Universal Coverage in the U.S.

By: Katherine Baicker, Amitabh Chandra and Mark Shepard

This JAMA Forum discusses alternative ways to achieve universal coverage in the US such as administrative simplification in the Affordable Care Act plans to increase enrollment, having a basic policy that would be available to everyone, and options for supplemental... View Details

Keywords: Health Care and Treatment; Government Legislation; Insurance; Cost; United States

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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

Keywords: Vaccination; Health Care and Treatment; Interpersonal Communication; Communication Technology; Behavior; Health Industry

February 2023
Article

Climate Solutions Investments

By: Alex Cheema-Fox, George Serafeim and Hui (Stacie) Wang

An increasing number of companies are providing products and services that help reduce carbon emissions in the economy. We develop a methodology to identify those companies and create a sample of publicly listed climate solutions companies allowing us to study their... View Details

Keywords: Decarbonization; Climate Finance; Climate Impact; Climate Risk; Environment; Sustainability; Carbon Emissions; Electric Vehicles; Energy; Renewables; Climate Change; Corporate Social Responsibility and Impact; Environmental Sustainability; Emerging Markets; Investment Portfolio

SSRN

2023
Working Paper

Crowding in Private Quality: The Equilibrium Effects of Public Spending in Education

By: Tahir Andrabi, Natalie Bau, Jishnu Das, Asim Ijaz Khwaja and Naureen Karachiwalla

We estimate the equilibrium effects of a public-school grant program administered through school councils in Pakistani villages with multiple public and private schools and clearly defined catchment boundaries. The program was randomized at the village-level, allowing... View Details

Keywords: Product Differentiation; Public Sector; Private Sector; Spending; Education; Competition

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February 2023
Article

Disruption and Credit Markets

By: Bo Becker and Victoria Ivashina

We show that over the past half century innovative disruptions were central to understanding corporate defaults. In a given year, industries experiencing abnormally high VC or IPO activity subsequently see higher default rates, higher segment exits by conglomerates,... View Details

Keywords: Default; Corporate Bonds; Disruption; Corporate Finance; Bonds

January–February 2023
Article

Forecasting COVID-19 and Analyzing the Effect of Government Interventions

By: Michael Lingzhi Li, Hamza Tazi Bouardi, Omar Skali Lami, Thomas Trikalinos, Nikolaos Trichakis and Dimitris Bertsimas

We developed DELPHI, a novel epidemiological model for predicting detected cases and deaths in the prevaccination era of the COVID-19 pandemic. The model allows for underdetection of infections and effects of government interventions. We have applied DELPHI across more... View Details

Keywords: COVID-19 Pandemic; Epidemics; Analytics and Data Science; Health Pandemics; AI and Machine Learning; Forecasting and Prediction

Working Paper

Group Fairness in Dynamic Refugee Assignment

By: Daniel Freund, Thodoris Lykouris, Elisabeth Paulson, Bradley Sturt and Wentao Weng

Ensuring that refugees and asylum seekers thrive (e.g., find employment) in their host countries is a profound humanitarian goal, and a primary driver of employment is the geographic location within a host country to which the refugee or asylum seeker is... View Details

Keywords: Refugees; Geographic Location; Mathematical Methods; Employment; Fairness

February 2023
Article

Homophily and Acrophily as Drivers of Political Segregation

By: Amit Goldenberg, Joseph M. Abruzzo, Zi Huang, Jonas Schone, David Bailey, Robb Willer, Eran Halperin and James J. Gross

Political segregation is an important social problem, increasing polarization and impeding effective governance. Previous work has viewed the central driver of segregation to be political homophily, the tendency to associate with others who have similar views. Here we... View Details

Keywords: Political Affiliation; Extremism; Values and Beliefs; Identity; Groups and Teams; Emotions; Civil Society or Community

February 2023
Article

Increasing the Demand for Workers with a Criminal Record

By: Zoë Cullen, Will Dobbie and Mitchell Hoffman

State and local policies increasingly restrict employers’ access to criminal records, but without addressing the underlying reasons that employers may conduct criminal background checks. Employers may thus still want to ask about a job applicant’s criminal record... View Details

Keywords: Criminal Record; Hiring; Background Checks; Recruitment; Insurance

Other Article

Introduction

By: Stefano Brusoni, Joachim Henkel, Michael G Jacobides, Samina Karim, Alan MacCormack, Phanish Puranam and Melissa Schilling

In 2000, Carliss Baldwin and Kim Clark published Design Rules: The Power of Modularity, a book that introduced new ways of understanding and explaining the architecture of complex systems. This Special Issue of Industrial and Corporate Change celebrates... View Details

Keywords: Complex Systems; Industry Structure; Systems Design; Complexity; Organizational Design; Competitive Strategy; Innovation and Management

2023
Working Paper

Life After Death: A Field Experiment with Small Businesses on Information Frictions, Stigma, and Bankruptcy

By: Shai Benjamin Bernstein, Emanuele Colonnelli, Mitchell Hoffman and Benjamin Iverson

In a randomized control trial (RCT) with U.S. small businesses, we document that a large share of firms are not well-informed about bankruptcy. Many assume that bankruptcy necessarily entails the death of a business and do not know about Chapter 11 bankruptcy, where... View Details

Keywords: Small Business; Insolvency and Bankruptcy; Knowledge Dissemination; Outcome or Result

2023
White Paper

Managing Workforce Risk in an Era of Unpredictability and Disruption

By: Joseph B. Fuller, Michael Griffiths, Reem Janho, Michael Stephan, Carey Oven, Keri Calagna, George Fackler, Robin Jones, Sue Cantrell and Zac Shaw

Keywords: Employees; Human Capital; Risk and Uncertainty; Talent and Talent Management

2023
Working Paper

Networking Frictions: Evidence from Entrepreneurial Networking Events in Lomé

By: Stefan Dimitiadis and Rembrand Koning

Spatial proximity between firms plays a crucial role in entrepreneurship by creating knowledge spillovers, enabling resource sharing, and sparking productivity gains. Building on these insights, research has explored whether institutions and organizations can engineer... View Details

Keywords: Local Range; Knowledge Sharing; Performance Productivity; Togo