Publications

2016
Chapter

User-Generated Content and Social Media

By: Michael Luca

This paper documents what economists have learned about user-generated content (UGC) and social media. A growing body of evidence suggests that UGC on platforms ranging from Yelp to Facebook has a large causal impact on economic and social outcomes ranging from... View Details

Keywords: User-generated Content; Crowdsourcing; Design Economics; Internet and the Web; Marketing; Economics; Media; Social Media

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Teaching Interest

Field Course: Social Innovation Lab

This course provides students an opportunity to address a social enterprise topic with the discipline of business tools and techniques. Students will work in teams, choosing among three types of projects: a) developing a business plan for your own social enterprise;... View Details

January 23, 2023
Article

Digital Public Health Interventions at Scale: The Impact of Social Media Advertising on Beliefs and Outcomes Related to COVID Vaccines

By: Susan Athey, Kristen Grabarz, Michael Luca and Nils Wernerfelt

Public health organizations increasingly use social media advertising campaigns in pursuit of public health goals. In this paper, we evaluate the impact of about $40 million of social media advertisements that were run and experimentally tested on Facebook and... View Details

Keywords: COVID-19 Pandemic; Public Health; Vaccines; Social Media; Advertising; Power and Influence; Health Care and Treatment

November 2012
Case

Tracy Palandjian at Social Finance US (A)

By: Alnoor Ebrahim, Catherine Clark and Beth Bafford

It had been eighteen months since Tracy Palandjian had left her position as a managing director at The Parthenon Group to start an ambitious venture called Social Finance US. With a mission "to mobilize investment capital to drive social change," her new organization... View Details

Keywords: Risk and Uncertainty; Social Enterprise; Social Entrepreneurship; Personal Development and Career

April 2002 (Revised February 2003)
Background Note

An Economic Framework for Assessing Development Impact

By: Benjamin C. Esty, Frank J. Lysy and Carrie Ferman

Discusses the differences between private and social returns and describes an economic framework for assessing a project's social return [known as the economic rate of return (ERR)]. The framework begins by analyzing the impact of a new project on private financiers... View Details

Keywords: Cost vs Benefits; Microeconomics; Investment Return; Framework; Projects; Business and Stakeholder Relations; Valuation

November 2013
Case

Canyon-Agassi Investing in Charter Schools

By: Nicolas P. Retsinas, Nicole Shomair, Vernon Beckford and Lisa Strope

After an unusual round of doubles in May 2011, real estate investor Bobby Turner, Managing Partner, Canyon-Agassi Charter School Facilities Fund (CACSFF) and Chairman, CEO, and Co-Founder of Canyon Capital Realty Advisors, found himself at a loss for words. Turner was... View Details

Keywords: Charter Schools; Real Estate; Fund Raising; Social Entrepreneurship; Education; Real Estate Industry; United States

Teaching Interest

Overview

By: Gerald C. Chertavian

I am currently teaching Social Entrepreneurship and Systems Change (SESC) as a 2nd year Elective Course. The premise of the course is that social entrepreneurs don’t just build organizations, they change systems. The course explores the frameworks, tools, mindsets,... View Details

Keywords: Social Impact; Systems Change; Social Entrepreneurship; Environmental Sustainability; Housing; Climate Change; Entrepreneurship; Food; Governance; Leadership; Measurement and Metrics; Social Enterprise; System; Africa; Asia; Europe; Latin America; North and Central America; South America

March 2025 (Revised April 2025)
Case

WallStreetBets: Democratizing Retail Investing

By: Joseph Pacelli and Alexis Lefort

In summer 2024, Jaime Rogozinski anticipated the launch of a day-trading eSports event, a vision he had nurtured for years. Rogozinski, the founder of the influential subreddit WallStreetBets (WSB), created the forum in 2012 as a space for retail traders to explore... View Details

Keywords: Investment; Emerging Markets; Market Participation; Financial Strategy; Lawsuits and Litigation; Social and Collaborative Networks; Financial Markets; Financial Services Industry; United States

2012
Working Paper

Payout Taxes and the Allocation of Investment

When corporate payout is taxed, internal equity (retained earnings) is cheaper than external equity (share issues). If there are no perfect substitutes for equity finance, payout taxes may therefore have an effect on the investment of firms. High taxes will favor... View Details

Keywords: Business Earnings; Equity; Financing and Loans; Investment; Taxation; Business and Shareholder Relations; Motivation and Incentives

2018
Working Paper

Zig-Zagging Your Way to Transformative Impact

By: V. Kasturi Rangan and Tricia Gregg

Achieving transformative impact has been much discussed by social entrepreneurs, funders, and consultants. These discussions have focused on issues of increasing impact and scale, but often with no clear distinction between the two terms. In order to provide clarity,... View Details

Keywords: Social Entrepreneurship; Performance Efficiency; Growth and Development; Outcome or Result; Strategy

05 Jun 2020
Research & Ideas

How Anchor Investors Help Impact Funds Succeed

so-called impact funds, or funds that hope to create positive social or environmental impact. In Anchors Aweigh: Analysis of Anchor Limited Partner Investors in Impact View Details

Keywords: by Sean Silverthorne; Financial Services

23 Oct 2008
Working Paper Summaries

Economic Impacts of Immigration: A Survey

Keywords: by Sari Pekkala Kerr & William R. Kerr

October 2011 (Revised March 2013)
Case

Yale University Investments Office: February 2011

By: Josh Lerner and Ann Leamon

David Swensen and the Investments Office staff must decide whether to continue to allocate the bulk of the university's endowment to illiquid investments—hedge funds, private equity, real estate—given the impact of the recent market turmoil. The case explores the risks... View Details

Keywords: Asset Management; Resource Allocation; Investment; Venture Capital; Investment Funds; Property; Private Equity

02 Jun 2014
Research & Ideas

Excerpt: ‘A Social Strategy’

immediate benefits that made it easy to justify future investments into using social channels to power the company's strategy. It also stands in marked contrast to the firms pursuing the first approach,... View Details

Article

On Her Own Account: How Strengthening Women's Financial Control Impacts Labor Supply and Gender Norms

By: Natalia Rigol, Simone Schaner, Rohini Pande, Erica Field and Charity Troyer Moore

Can increasing control over earnings incentivize a woman to work, and thereby influence norms around gender roles? We randomly varied whether rural Indian women received bank accounts, training in account use, and direct deposit of public sector wages into their own... View Details

Keywords: Social Norms; Employment; Wages; Gender; Banks and Banking; Perception

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30 Nov 2020
Research & Ideas

COVID Not Slowing VC Investment

expect their investments to outperform major equity indexes going forward, and they’re continuing to fund new endeavors. “It’s sort of the opposite of doom and gloom,” Gompers says. “We were surprised by how relatively unaffected the... View Details

Keywords: by Danielle Kost; Financial Services; Banking

March 2019 (Revised March 2023)
Case

Accion's Fintech Strategy

By: V. Kasturi Rangan, Michael Chu and Tricia Gregg

Accion, an NGO, had been a pioneer in microfinance since its entry into that sector in the early 1970s. Its investments in Banco Compartamos paid off, when the microfinance bank went IPO in 2007, leaving an influx of $138 million for Accion. Under a new CEO, Michael... View Details

Keywords: Fintech; Impact Investing; Financial Inclusion; Technological Innovation; Strategy; Strategic Planning; Performance Effectiveness; Non-Governmental Organizations; Microfinance; Financial Institutions; Business Growth and Maturation; Customer Focus and Relationships; Industry Growth

April 2015 (Revised April 2015)
Case

Yale University Investments Office: February 2015

By: Josh Lerner

David Swensen and the Investments Office staff must decide whether to continue to allocate the bulk of the university's endowment to illiquid investments—hedge funds, private equity, real estate—given the impact of the recent market turmoil. The case explores the risks... View Details

Keywords: Asset Management; Resource Allocation; Investment; Venture Capital; Investment Funds; Property; Private Equity