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- September 16, 2022
- Article
A Causal Test of the Strength of Weak Ties
By: Karthik Rajkumar, Guillaume Saint-Jacques, Iavor I. Bojinov, Erik Brynjolfsson and Sinan Aral
The authors analyzed data from multiple large-scale randomized experiments on LinkedIn’s People You May Know algorithm, which recommends new connections to LinkedIn members, to test the extent to which weak ties increased job mobility in the world’s largest...
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- 2022
- Working Paper
What Would It Mean for a Machine to Have a Self?
By: Julian De Freitas, Ahmet Kaan Uğuralp, Zeliha Uğuralp, Laurie Paul, Joshua B. Tenenbaum and Tomer Ullman
What would it mean for autonomous AI agents to have a ‘self’? One proposal for a minimal
notion of self is a representation of one’s body spatio-temporally located in the world, with a tag
of that representation as the agent taking actions in the world. This turns...
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- 2022
- Chapter
Marketing Through the Machine’s Eyes: Image Analytics and Interpretability
By: Flora Feng, Shunyuan Zhang and Kannan Srinivasan
he growth of social media and the sharing economy is generating abundant unstructured image and video data. Computer vision techniques can derive rich insights from unstructured data and can inform recommendations for increasing profits and consumer utility—if only the...
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- August 13, 2022
- Article
A Historic Opportunity for Universal Health Coverage in India
By: Vikram Patel, Shubhangi Bhadada, Kiran Mazumdar-Shaw, Arnab Mukherji, Tarun Khanna and Gagandeep Kang
The milestone of India's 75th anniversary of independence on Aug 15, 2022, offers an opportunity to reassert the country's commitment to realising universal health coverage (UHC). The first such effort predates independence, with the 1946 Bhore Committee report....
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- August 8, 2022
- Article
Hate Crime Increases with Minoritized Group Rank
By: Mina Cikara, Vasiliki Fouka and Marco Tabellini
People are on the move in unprecedented numbers within and between countries. How does demographic change affect local intergroup dynamics? In complement to accounts that emphasize stereotypical features of groups as determinants of their treatment, we propose the...
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Keywords:
Prejudice;
Minority;
Hate Crimes;
Reference Dependence;
Prejudice and Bias;
Attitudes;
Demographics
- August 2022
- Case
NOW PT (A): Should We Invest?
By: George A Riedel, Amy Klopfenstein and Mel Martin
In fall 2021, a team of students from the HBS Impact Investing Fund considered Neurologic Optimal Wellness Physical Therapy (NOW PT) for a potential investment. Dr. Banks, the founder of NOW PT, drove to visit patients. She sought an investment from the fund to open a...
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- August 2022
- Case
Rocket Learning: Evidence in Action
By: Brian Trelstad, Tomas Rosales and Malini Sen
Founders of Rocket Learning, an India-based nonprofit which focused on early childhood education (ECE), received an invitation from MIT’s Abdul Latif Jameel Poverty Action Lab (JPAL), a development research organization, to test its intervention for ECE with a...
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- August, 2022
- Article
Changing Ingroup Boundaries: The Effect of Immigration on Race Relations in the U.S.
By: Vasiliki Fouka and Marco Tabellini
How do social group boundaries evolve? Does the appearance of a new outgroup change the ingroup's perceptions of other outgroups? We introduce a conceptual framework of context-dependent categorization, in which exposure to one minority leads to recategorization of...
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- Article
Online Experimentation: Benefits, Operational and Methodological Challenges, and Scaling Guide
By: Iavor Bojinov and Somit Gupta
In the past decade, online controlled experimentation, or A/B testing, at scale has proved to be a significant driver of business innovation. The practice was first pioneered by the technology sector and, more recently, has been adopted by traditional companies...
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- 2022
- Working Paper
Pricing Power in Advertising Markets: Theory and Evidence
By: Matthew Gentzkow, Jesse M. Shapiro, Frank Yang and Ali Yurukoglu
Existing theories of media competition imply that advertisers will pay a lower price in equilibrium to reach consumers who multi-home across competing outlets. We generalize and extend this theoretical result and test it using data from television and social media...
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- 2022
- Article
How to Choose a Default
By: John Beshears, Richard T. Mason and Shlomo Benartzi
We have developed a model for setting a default when a population is choosing among ordered choices—that is, ones listed in ascending or descending order. A company, for instance, might want to set a default contribution rate that will increase employees’ average...
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- May 2022
- Article
How Status of Research Papers Affects the Way They Are Read and Cited
By: Misha Teplitskiy, Eamon Duede, Michael Menietti and Karim R. Lakhani
Although citations are widely used to measure the influence of scientific works, research shows that many citations serve rhetorical functions and reflect little-to-no influence on the citing authors. If highly cited papers disproportionately attract rhetorical...
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Keywords:
Metrics;
Influence;
Status;
Citations;
Science;
Measurement and Metrics;
Research;
Perception
- 2022
- Working Paper
Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers
By: Magie Cheng and Shunyuan Zhang
The growth of the influencer marketing industry warrants an empirical examination of the effect of posting sponsored videos on an influencer’s reputation. We collect a novel dataset of user-generated YouTube videos created by prominent English-speaking influencers in...
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- April 2022
- Teaching Note
CVS Health: Prescription for Transformation
By: Rosabeth Moss Kanter and Catarina Martinez
In 2021, new CEO Karen Lynch (named the most powerful woman in business) considered the next transformation phase for CVS Health (a Fortune 5 corporate giant). The 2018 acquisition of Aetna insurance brought her to the company as part of its long evolution from a...
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Keywords:
Health;
COVID-19 Pandemic;
Primary Care;
Leadership;
Change Management;
Women Executives;
Retail;
Pharmacy;
Pharmacy Benefit Manager;
Clinical Trials;
Vaccination;
Acquisition;
Innovation and Invention;
Transformation;
Retail Industry;
Pharmaceutical Industry;
Health Industry;
United States
- April 2022
- Article
The Past Is Prologue? Venture-Capital Syndicates' Collaborative Experience and Start-Up Exits
By: Dan Wang, Emily Cox Pahnke and Rory McDonald
Past research has produced contradictory insights into how prior collaboration between organizations—their relational embeddedness—impacts collective collaborative performance. We theorize that the effect of relational embeddedness on collaborative success is...
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- 2022
- Working Paper
Is Hybrid Work the Best of Both Worlds? Evidence from a Field Experiment
Hybrid work is emerging as a novel form of organizing work globally. This paper reports causal evidence on how the extent of hybrid work—the number of days worked from home relative to days worked from the office—affects work outcomes. Collaborating with an...
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- March 2022 (Revised July 2022)
- Module Note
Statistical Inference
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...
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- Article
From Immigrants to Americans: Race and Assimilation During the Great Migration
By: Vasiliki Fouka, Soumyajit Mazumder and Marco Tabellini
How does the arrival of a new minority group affect the social acceptance and outcomes of existing minorities? We study this question in the context of the First Great Migration. Between 1915 and 1930, 1.5 million African Americans moved from the U.S. South to Northern...
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- Article
When Seeking Help, Women and Racial/Ethnic Minorities Benefit from Explicitly Stating Their Identity
By: Erika L. Kirgios, Aneesh Rai, Edward H. Chang and Katherine L. Milkman
Receiving help can make or break a career, but women and racial/ethnic minorities do not always receive the support they seek. Across two audit experiments—one with politicians and another with students—as well as an online experiment (total n = 5,145), we test whether...
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- February 2022 (Revised April 2022)
- Case
CVS Health: Prescription for Transformation
By: Rosabeth Moss Kanter and Tuna Cem Hayirli
In 2021, new CEO Karen Lynch (named the most powerful woman in business) considered the next transformation phase for CVS Health (a Fortune 5 corporate giant. The 2018 acquisition of Aetna insurance brought her to the company as part of its long evolution from a...
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