Publications

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2016
Working Paper

Reviews, Reputation, and Revenue: The Case of Yelp.com

By: Michael Luca

Do online consumer reviews affect restaurant demand? I investigate this question using a novel dataset combining reviews from the website Yelp.com and restaurant data from the Washington State Department of Revenue. Because Yelp prominently displays a restaurant's... View Details

Keywords: Revenue; Network Effects; Reputation; Social and Collaborative Networks; Food and Beverage Industry; Service Industry; Washington (state, US)

2021
Working Paper

Accounting for Product Impact in the Interactive Media and Services Industry

By: DG Park, George Serafeim and Katie Trinh

We apply the product impact measurement framework of the Impact-Weighted Accounts Initiative (IWAI) in two competitor companies within the interactive media and services industry. We design a monetization methodology that allows us to calculate monetary impact... View Details

2021
Working Paper

Accounting for Product Impact in the Telecommunications Industry

By: George Serafeim and Katie Trinh

We apply the product impact measurement framework of the Impact-Weighted Accounts Initiative (IWAI) in two competitor companies within the telecommunications industry. We design a monetization methodology that allows us to calculate monetary impact estimates of network... View Details

January 2013 (Revised October 2014)
Case

Barclays and the LIBOR Scandal

By: Clayton S. Rose and Aldo Sesia

In June of 2012, Barclays plc admitted that it had manipulated LIBOR—a benchmark interest rate that was fundamental to the operation of international financial markets and that was the basis for trillions of dollars of financial transactions. Between 2005 and 2009... View Details

Keywords: Financial Systems; Financial Services; Corruption; Regulation; General Management; Management; Leadership; Economic Systems; Crime and Corruption; Ethics; Culture; Banking Industry; Financial Services Industry; United Kingdom

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14 Mar 2023
In Practice

What Does the Failure of Silicon Valley Bank Say About the State of Finance?

crisis—and was the second-biggest to fail ever. Analysts say SVB was largely unprepared for the Federal Reserve’s aggressive interest rate increases, which shrank the value of its investments. As word spread quickly online that the bank... View Details

Keywords: by Dina Gerdeman; Financial Services; Banking

September–October 2020
Article

Social-Impact Efforts That Create Real Value

By: George Serafeim

Until the mid-2010s few investors paid attention to environmental, social, and governance (ESG) data—information about companies’ carbon footprints, labor policies, board makeup, and so forth. Today the data is widely used by investors. How can organizations create... View Details

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2021
Article

Decarbonizing Everything

By: Alex Cheema-Fox, Bridget LaPerla, George Serafeim, David Turkington and Hui (Stacie) Wang

We analyze how the use of different climate risk measures leads to different portfolio carbon outcomes and risk-adjusted returns. Our findings are synthesized in a rules-based investment framework, which selects a different type of climate metric across industries and... View Details

Keywords: Climate Risk; ESG; ESG (Environmental, Social, Governance) Performance; ESG Disclosure; ESG Disclosure Metrics; ESG Ratings; Investing; Investing For Impact; Investment Strategy; Environment; Decarbonization; Climate Change; Environmental Sustainability; Environmental Management; Environmental Accounting; Investment; Strategy; Investment Portfolio; Investment Return

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24 Oct 2011
Research & Ideas

The Yelp Factor: Are Consumer Reviews Good for Business?

common uses of online ratings: restaurants. "Restaurants are a classic example in economics where the consumer has to make a decision based on very little information," he says. In theory, ratings sites fill in the gaps by... View Details

Keywords: by Michael Blanding; Food & Beverage

2010
Working Paper

Men as Cultural Ideals: How Culture Shapes Gender Stereotypes

By: Amy J.C. Cuddy, Susan Crotty, Jihye Chong and Michael I. Norton

Three studies demonstrate how culture shapes the contents of gender stereotypes, such that men are perceived as possessing more of whatever traits are culturally valued. In Study 1, Americans rated men as less interdependent than women; Koreans, however, showed the... View Details

Keywords: Prejudice and Bias; Perception; Values and Beliefs; Gender; Culture; Power and Influence

2021
Working Paper

Accounting for Product Impact in the Water Utilities Industry

By: George Serafeim and Katie Trinh

We apply the product impact measurement framework of the Impact-Weighted Accounts Initiative (IWAI) in two competitor companies within the water utilities industry. We design a monetization methodology that allows us to calculate monetary impact estimates of water... View Details

March 2005 (Revised March 2006)
Background Note

Activity-Based Costing and Capacity

By: Robert S. Kaplan

Discusses the use of budgeted rather than historical data in an activity-based costing (ABC) model and argues for calculating rates using practical capacity, not actual utilization. An ABC model need not be limited to analysis of historical data. When cost driver rates... View Details

Keywords: Activity Based Costing and Management; Accounting Industry

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November 2016
Article

Corporate Sustainability: First Evidence on Materiality

By: Mozaffar Khan, George Serafeim and Aaron Yoon

Using newly available materiality classifications of sustainability topics, we develop a novel dataset by hand-mapping sustainability investments classified as material for each industry into firm-specific sustainability ratings. This allows us to present new evidence... View Details

Keywords: Sustainability; Investments; Corporate Social Responsibility; Accounting; Corporate Reporting; Regulation; Corporate Social Responsibility and Impact; Integrated Corporate Reporting; Investment; Corporate Governance

17 Jan 2024
HBS Case

Psychological Pricing Tactics to Fight the Inflation Blues

Many consumers recovering from the worst inflation in 40 years continue to closely watch their spending—they want to know that every expense is worth it. Now companies must confront a major challenge: gauging how much, if any, of their own higher costs customers are... View Details

Keywords: by Jay Fitzgerald; Consumer Products; Retail

2021
Working Paper

Accounting for Product Impact in the Airlines Industry

By: George Serafeim and Katie Trinh

We apply the product impact measurement framework of the Impact-Weighted Accounts Initiative (IWAI) in two competitor companies within the airlines industry. We design a monetization methodology that allows us to calculate monetary impact estimates of fare... View Details

2024
Working Paper

When Insurers Exit: Climate Losses, Fragile Insurers, and Mortgage Markets

By: Ishita Sen, Pari Sastry and Ana-Maria Tenekedjieva

This paper studies how homeowners insurance markets respond to growing climate losses and how this impacts mortgage market dynamics. Using Florida as a case study, we show that traditional insurers are exiting high risk areas, and new lower quality insurers are... View Details

Keywords: Insurance; Natural Disasters; Governing Rules, Regulations, and Reforms; Insurance Industry; Florida

24 May 2021
News

White Airbnb Hosts Earn More. Can AI Shrink the Racial Gap?

16 May 2023
In Practice

After Silicon Valley Bank's Flameout, What's Next for Entrepreneurs?

The collapse of Silicon Valley Bank (SVB) in March left the startup world reeling. The biggest lender to fail since the 2008 financial crisis, SVB had become the preferred funder of the startup, tech, and venture capital worlds. Its quick and sudden fall, as higher... View Details

Keywords: by Avery Forman; Technology; Financial Services

April 2015 (Revised January 2020)
Case

Japan's Missing Arrow?

By: Laura Alfaro and Hilary White

In late December 2014, Shinzo Abe was elected to another term as the prime minister of Japan. His re-election was largely interpreted as a vote of confidence for his economics policies, collectively referred to as "Abenomics." Comprised of three "arrows," including... View Details