Publications

Regular handwashing with soap is believed to have substantial impacts on child health in the developing world. Most handwashing campaigns have failed, however, to establish and maintain a regular practice of handwashing. Motivated by scholarship that suggests... View Details

February 15, 2022
Article

How Managers Can Build a Culture of Experimentation

By: Frank V. Cespedes and Neil Hoyne

Testing in business presents qualitatively different challenges than those in clinical trials and most scientific research. There are very few opportunities for randomized control experiments in a changing, competitive market. Yet, change and competition make testing a... View Details

Keywords: Experimentation; Management; Decision Making

Research Summary

Individual Credit Constraints in Rural India (w/ Sendhil Mullainathan)

Credit access for the poor has recently been given center stage in the international policy arena. A plethora of reports and case studies have emphasized the enormous returns that micro-businesses face: the Year of Microcredit website notes that studies conducted in... View Details

October 2021
Article

Changing Gambling Behavior through Experiential Learning

By: Shawn A. Cole, Martin Abel and Bilal Zia

This paper tests experiential learning as a debiasing tool to reduce gambling in South Africa, through a randomized field experiment. The study implements a simple, interactive game that simulates the odds of winning the national lottery through dice rolling.... View Details

Keywords: Debiasing; Experiential Learning; Behavioral Economics; Financial Education; Learning; Games, Gaming, and Gambling; Behavior; Decision Making

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

14 Feb 2018
HBS Seminar

Ruomeng Cui, Emory University

2023
Working Paper

Money, Time, and Grant Design

By: Kyle Myers and Wei Yang Tham

The design of research grants has been hypothesized to be a useful tool for influencing researchers and their science. We test this by conducting two thought experiments in a nationally representative survey of academic researchers. First, we offer participants a... View Details

Keywords: Research; Power and Influence; Money

14 Aug 2023
Blog Post

Crossing the Bridge: A Reflection on the HKS/HBS Joint Degree Program

facilitate positive social impact. Thus, I pursued a program that allowed me to learn expansively and ultimately identify a career path that would allow me to combine my passions and purpose. How have you leveraged your unique educational View Details

March 2024
Article

Human Capital Affects Religious Identity: Causal Evidence from Kenya

By: Livia Alfonsi, Michal Bauer, Julie Chytilová and Edward Miguel

We study how human capital and economic conditions causally affect the choice of religious denomination. We utilize a longitudinal dataset monitoring the religious history of more than 5,000 Kenyans over 20 years, in tandem with a randomized experiment (deworming) that... View Details

Keywords: Religion; Human Capital; Developing Countries and Economies; Welfare; Kenya

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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... View Details

Keywords: Job Mobility; Social Networks; Social Ties; Networks; Personal Development and Career

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August 2017
Article

Voter Registration Costs and Disenfranchisement: Experimental Evidence from France

By: Céline Braconnier, Jean-Yves Dormagen and Vincent Pons

A large-scale randomized experiment conducted during the 2012 French presidential and parliamentary elections shows that voter registration requirements have significant effects on turnout, resulting in unequal participation. We assigned 20,500 apartments to one... View Details

Keywords: Elections; Politics; Voting; Political Elections; Behavior; France

April, 2023
Article

Reducing Information Barriers to Solar Adoption: Experimental Evidence from India

By: Meera Mahadevan, Robyn C. Meeks and Takashi Yamano

Off-grid solar technologies hold promise for unelectrified and low-quality electricity settings; however, their adoption remains low. Important barriers to adoption, such as incomplete information remain relatively unexplored in developing countries. In collaboration... View Details

Keywords: Technology Adoption; Renewable Energy; Knowledge Sharing; Developing Countries and Economies; India

Article

The (Perceived) Meaning of Spontaneous Thoughts

By: Carey K. Morewedge, Colleen Giblin and Michael I. Norton

Spontaneous thoughts, the output of a broad category of uncontrolled and inaccessible higher-order mental processes, arise frequently in everyday life. The seeming randomness by which spontaneous thoughts arise might give people good reason to dismiss them as... View Details

Keywords: Spontaneous Thoughts; Self-Insight; Meaning; Attribution; Judgment And Decision Making; Decision Making; Cognition and Thinking

September 2013
Article

Converging to the Lowest Common Denominator in Physical Health

By: Leslie K. John and Michael I. Norton

Objective: This research examines how access to information on peer health behaviors affects one's own health behavior. Methods: We report the results of a randomized field experiment in a large corporation in which we introduced walkstations (treadmills... View Details

Keywords: Information; Behavior; Decision Choices and Conditions; Health; Health Industry

April 2019
Article

Shooting the Messenger

By: Leslie John, Hayley Blunden and Heidi Liu

Eleven experiments provide evidence that people have a tendency to “shoot the messenger,” deeming innocent bearers of bad news unlikeable. In a preregistered lab experiment, participants rated messengers who delivered bad news from a random drawing as relatively... View Details

Keywords: Judgment; Communication; Sense-making; Attribution; Disclosure; Interpersonal Communication; Perception; Judgments; Motivation and Incentives

March 24, 2020
Article

Delayed Negative Effects of Prosocial Spending on Happiness

By: Armin Falk and Thomas Graeber

Does prosocial behavior promote happiness? We test this longstanding hypothesis in a behavioral experiment that extends the scope of previous research. In our Saving a Life paradigm, every participant either saved one human life in expectation by triggering a targeted... View Details

Keywords: Prosocial Behavior; Altruism; Happiness; Well-being; Spending; Behavior

Nine studies investigate when and why people may paradoxically prefer bad news—e.g., hoping for an objectively worse injury or a higher-risk diagnosis over explicitly better alternatives. Using a combination of field surveys and randomized experiments, the... View Details

2024
Article

Neyman Meets Causal Machine Learning: Experimental Evaluation of Individualized Treatment Rules

By: Michael Lingzhi Li and Kosuke Imai

A century ago, Neyman showed how to evaluate the efficacy of treatment using a randomized experiment under a minimal set of assumptions. This classical repeated sampling framework serves as a basis of routine experimental analyses conducted by today’s scientists across... View Details

Keywords: AI and Machine Learning; Research