Publications

11 Feb 2019
News

Yes, Sustainability Can Be a Strategy

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

2015
Chapter

Information Technology and the Distribution of Inventive Activity

By: Chris Forman, Avi Goldfarb and Shane Greenstein

We examine the relationship between the diffusion of advanced Internet technology and the geographic concentration of invention, as measured by patents. First, we show that patenting became more concentrated from the early 1990s to the early 2000s and, similarly, that... View Details

Keywords: Patents; Geographic Location; Internet and the Web; Innovation and Invention

Find at Harvard

2010
Working Paper

Banking Market Concentration and Consumer Credit Constraints: Evidence from the 1983 Survey of Consumer Finances

This paper uses data from the 1983 Survey of Consumer Finances to test the relationship between the banks' market power and households' self-reported levels of credit constraints. The 1983 Survey was the last to identify households' geographic location, making it... View Details

Keywords: Age Characteristics; Household Characteristics; Borrowing and Debt; Credit; Banks and Banking; Interest Rates; Geographic Location; Banking Industry

2020
Working Paper

Demystifying the Math of the Coronavirus

By: Elon Kohlberg and Abraham Neyman

We provide an elementary mathematical description of the spread of the coronavirus. We explain two fundamental relationships: How the rate of growth in new infections is determined by the “effective reproductive number” and how the effective reproductive number is... View Details

Keywords: Coronavirus; Health Pandemics; Mathematical Methods

September 1992 (Revised October 1992)
Case

Acid Rain: The Southern Co. (B)

By: Forest L. Reinhardt

In addition to the issues of expected cost minimization elucidated in Acid Rain: The Southern Co. (A), problems involving regulatory uncertainty are critical to the firm's Clean Air Act compliance strategy. The regulatory uncertainty affects, and is affected by, the... View Details

Keywords: Energy Generation; Business Strategy; Environmental Sustainability; Cost vs Benefits; Risk and Uncertainty; Strategic Planning; Investment Return; Government Legislation; Wastes and Waste Processing; Business and Government Relations; Utilities Industry; Energy Industry; United States

August 1995 (Revised September 1995)
Case

Hutton Branch Manager (A)

By: Lynn S. Paine and Jane Palley Katz

The manager of an E.F. Hutton branch office must decide how best to approach a colleague whose aggressive and ethically problematic cash management practices have cost the branch a major institutional client. These practices had been encouraged by top management at... View Details

Keywords: Ethics; Business or Company Management; Decisions; Management Skills; Cash Flow; Financial Management; Investment; Management Teams; Financial Services Industry

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23 Sep 2013
News

Give Yourself 5 Stars? Online, It Might Cost You

03 Feb 2020
News

A Warning about the Combination of Management Culture & Surveillance

May 2022
Case

Rawbank's Illico Cash: Can 'Fast Money' Overcome Cash Dependency in the DRC?

By: Lauren Cohen and Grace Headinger

Thomas de Dreux-Brézé, the Head of Strategy and Project Management at Rawbank Congo in the Democratic Republic of the Congo (DRC), was perplexed as he reviewed annual adoption rates for the bank’s launch of Illico Cash 2.0. As the bank’s mobile money app, Illico Cash... View Details

15 Sep 2015
First Look

September 15, 2015

counties that were leaders in patenting in the early 1990s produced relatively more patents by the early 2000s. Second, we compare the extent of invention in counties that were leaders in Internet adoption to those that were not. We see little difference in the growth... View Details

Keywords: Sean Silverthorne

05 Feb 2015
Working Paper Summaries

Does Front-Loading Taxation Increase Savings? Evidence from Roth 401(k) Introductions

Keywords: by John Beshears, James J. Choi, David Laibson & Brigitte C. Madrian

Article

Potentially Long-Lasting Effects of the Pandemic on Scientists

By: Jian Gao, Yian Yin, Kyle R. Myers, Karim R. Lakhani and Dashun Wang

Two surveys of principal investigators conducted between April 2020 and January 2021 reveal that while the COVID-19 pandemic’s initial impacts on scientists’ research time seem alleviated, there has been a decline in the rate of initiating new projects. This dimension... View Details

Keywords: COVID-19; Scientists; Scientific Research; Health Pandemics; Research; Gender

05 Feb 2014
News

Awful Weather Makes for Better Workers (and More Mouse Trap Sales)

03 Oct 2016
News

Immigrants Play a Disproportionate Role in American Entrepreneurship

February 2010 (Revised April 2010)
Case

China: Getting Richer Still

By: Diego A. Comin and Richard H. K. Vietor

In the last quarter of 2009, China's GDP growth rate again approached 10%. While the global financial crisis had certainly hurt - causing layoffs of as many as 20 million factory workers - a huge stimulus package on top of continuing domestic demand had restored... View Details

Keywords: History; Resource Allocation; Corporate Social Responsibility and Impact; Social Issues; Policy; Business and Government Relations; Macroeconomics; Demand and Consumers; Leading Change; Economic Growth; China

February 2010
Supplement

Marketing Analysis Toolkit: Market Size and Market Share Analysis (CW)

By: Thomas J. Steenburgh and Jill Avery

This Excel worksheet contains sample problems, prebuilt Excel models to run market sizing and market share analyses, and charts and graphs which help visualize the results. It is designed to accompany Marketing Analysis Tookit: Market Size and Market Share Analysis.... View Details

Keywords: Mathematical Methods; Marketing Strategy; Decisions; Strategic Planning; Market Participation; Sales; Forecasting and Prediction; Management Analysis, Tools, and Techniques