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- All HBS Web
(1,593)
- Faculty Publications (279)
- March 2022 (Revised April 2023)
- Case
Pittsburgh: A Successful City?
Pittsburgh, PA, was once the crown jewel of American heavy industry. During the 19th and 20th centuries, the city was an undisputed leader in steel production, boasting some of the largest companies and wealthiest individuals in the world. Its abundance of... View Details
Keywords: Economic And Social Disparities; Economic Development; Local Economic Development; Contextual Intelligence; Contextual Knowledge; Context; City Growth; City Innovation; City Leadership; Pittsburgh; Local Government; Local Stakeholders; Business And Community; Business And Community Relations; Community Engagement; Community Relations; Cross-sector Collaboration; Innovation; Innovation Economy; Innovation Clusters; Innovation Ecosystems; Shared Prosperity; Equality Of Opportunity; Equity; Inclusion; Business And Government; Business & Government Relations; Business And Government Relations; Business And Society; Neighborhoods; Race And Ethnicity; Innovation & Entrepreneurship; Diversity; Ethnicity; Race; Household; Income; Economic Growth; Economic Sectors; Economics; Local Range; Urban Development; Urban Scope; City; Cross-Cultural and Cross-Border Issues; Government and Politics; Government Administration; Growth and Development; History; Leadership; Goals and Objectives; Philanthropy and Charitable Giving; Society; Civil Society or Community; Culture; Human Needs; Public Opinion; Public Sector; Social Issues; Poverty; Equality and Inequality; Manufacturing Industry; Steel Industry; Education Industry; Medical Devices and Supplies Industry; Technology Industry; United States; Pittsburgh; Pennsylvania
Mills, Karen, Caroline Elkins, Vikram Gandhi, Gabriella Elanbeck, and Zeke Gillman. "Pittsburgh: A Successful City?" Harvard Business School Case 322-080, March 2022. (Revised April 2023.)
- Article
Expected Stock Returns Worldwide: A Log-Linear Present-Value Approach
By: Akash Chattopadhyay, Matthew R. Lyle and Charles C.Y. Wang
This study provides the first large-scale study of the performance of expected-return proxies (ERPs) internationally. Analyst-forecast-based ICCs are sparsely populated and not robustly associated with future returns. Earnings-model-forecast-based ICCs are... View Details
Keywords: Expected Returns; Discount Rates; Fundamental Valuation; Implied Cost Of Capital; International Equity Markets; Present Value; Investment Return; Equity; Markets; Global Range
Chattopadhyay, Akash, Matthew R. Lyle, and Charles C.Y. Wang. "Expected Stock Returns Worldwide: A Log-Linear Present-Value Approach." Accounting Review 97, no. 2 (March 2022): 107–133.
- 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... View Details
Fouka, Vasiliki, Soumyajit Mazumder, and Marco Tabellini. "From Immigrants to Americans: Race and Assimilation During the Great Migration." Review of Economic Studies 89, no. 2 (March 2022): 811–842. (Also appears in VoxEU, The New York Times, Broadstreet, the Skepticast, and Oxford University Press Blog.)
- Article
Policies to Influence Perceptions about COVID-19 Risk: The Case of Maps
By: Claudia Engel, Jonathan Rodden and Marco Tabellini
Choropleth disease maps have become an important tool for informing the public about the risks posed by COVID-19. In a survey conducted in the U.S. state of Georgia in June 2020, we randomly assigned respondents to view either of two maps. The first one reported... View Details
Engel, Claudia, Jonathan Rodden, and Marco Tabellini. "Policies to Influence Perceptions about COVID-19 Risk: The Case of Maps." Science Advances 8, no. 11 (March 18, 2022).
- 2022
- Article
Which Corporate ESG News Does the Market React To?
By: George Serafeim and Aaron Yoon
Using a dataset that classifies firm-level ESG news as positive and negative, we examine how stock prices react to different types of ESG news. We analyze 111,020 firm-day observations for 3,126 companies and find that prices react only to issues identified as... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Ratings; Social Capital; Environment; Sustainability; CSR; Stock Price; Stock Market Expectations; Materiality; Market Reaction; Environmental Sustainability; Governance; Social Issues; Performance; News
Serafeim, George, and Aaron Yoon. "Which Corporate ESG News Does the Market React To?" Financial Analysts Journal 78, no. 1 (2022): 59–78.
- February 2022
- Article
Sugar-sweetened Beverage Purchases and Intake at Event Arenas with and without a Portion Size Cap
By: Sheri Volger, James Scott Parrott, Brian Elbel, Leslie K. John, Jason P. Block, Pamela Rothpletz-Puglia and Christina A. Roberto
This is the first real-world study to examine the association between a voluntary 16-ounce (oz.) portion-size cap on sugar-sweetened beverages (SSB) at a sporting arena on volume of SSBs and food calories purchased and consumed during basketball games. Cross-sectional... View Details
Keywords: Sugar-sweetened Beverages; Nutrition Policy; Obesity Prevention; Portion Sizes; Nutrition; Policy; Health; Behavior
Volger, Sheri, James Scott Parrott, Brian Elbel, Leslie K. John, Jason P. Block, Pamela Rothpletz-Puglia, and Christina A. Roberto. "Sugar-sweetened Beverage Purchases and Intake at Event Arenas with and without a Portion Size Cap." Art. 101661. Preventative Medicine Reports 25 (February 2022).
- January 2022
- Article
Global Behaviors, Perceptions, and the Emergence of Social Norms at the Onset of the COVID-19 Pandemic
By: Lukas Hensel, Marc Witte, Stefano Caria, Thiemo Fetzer, Stefano Fiorin, Friedrich M. Goetz, Margarita Gomez, Johannes Haushofer, Andriy Ivchenko, Gordon T. Kraft-Todd, Elena Reutskaja, Christopher Roth, Erez Yoeli and Jon M. Jachimowicz
We conducted a large-scale survey covering 58 countries and over 100,000 respondents between late March and early April 2020 to study beliefs and attitudes towards citizens' and governments' responses at the onset of the COVID-19 pandemic. Most respondents reported... View Details
Keywords: COVID-19; Government Regulation; Social Norms; Health Pandemics; Governing Rules, Regulations, and Reforms; Behavior; Perception; Global Range; Surveys
Hensel, Lukas, Marc Witte, Stefano Caria, Thiemo Fetzer, Stefano Fiorin, Friedrich M. Goetz, Margarita Gomez, Johannes Haushofer, Andriy Ivchenko, Gordon T. Kraft-Todd, Elena Reutskaja, Christopher Roth, Erez Yoeli, and Jon M. Jachimowicz. "Global Behaviors, Perceptions, and the Emergence of Social Norms at the Onset of the COVID-19 Pandemic." Journal of Economic Behavior & Organization 193 (January 2022): 473–496.
- January 2022
- Article
Why Is Corporate Virtue in the Eye of the Beholder? The Case of ESG Ratings
By: Dane Christensen, George Serafeim and Anywhere Sikochi
Despite the rising use of environmental, social, and governance (ESG) ratings, there is substantial disagreement across rating agencies regarding what rating to give to individual firms. As what drives this disagreement is unclear, we examine whether a firm’s ESG... View Details
Keywords: ESG Ratings; Rating Agency Disagreement; ESG Disclosure; Corporate Social Responsibility; Sustainability; Corporate Social Responsibility and Impact; Environmental Sustainability; Corporate Disclosure
Christensen, Dane, George Serafeim, and Anywhere Sikochi. "Why Is Corporate Virtue in the Eye of the Beholder? The Case of ESG Ratings." Accounting Review 97, no. 1 (January 2022): 147–175.
- December 2021
- Article
Partisan Professionals: Evidence from Credit Rating Analysts
By: Elisabeth Kempf and Margarita Tsoutsoura
Partisan perception affects the actions of professionals in the financial sector. Using a novel dataset linking credit rating analysts to party affiliations from voter records, we show that analysts who are not affiliated with the U.S. president’s party downward-adjust... View Details
Keywords: Political Affiliation; Credit Rating Agencies; Political Partisanship; Political Elections; Perception; Credit
Kempf, Elisabeth, and Margarita Tsoutsoura. "Partisan Professionals: Evidence from Credit Rating Analysts." Journal of Finance 76, no. 6 (December 2021): 2805–2856.
- 2022
- Working Paper
ESG: Hyperboles and Reality
By: George Serafeim
ESG has rapidly become a household name leading to both confusion about what it means and creating unrealistic expectations about its effects. In this paper, I draw on more than a decade of research to dispel several myths about ESG and provide answers to important... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Disclosure; ESG Reporting; ESG Ratings; Sustainability; Corporate Social Responsibility and Impact; Environmental Sustainability; Performance; Corporate Disclosure; Reports
Serafeim, George. "ESG: Hyperboles and Reality." Harvard Business School Working Paper, No. 22-031, November 2021.
- November 2021
- Article
Ratings, Reviews, and the Marketing of New Products
By: Itay P. Fainmesser, Dominique Olié Lauga and Elie Ofek
We study how user-generated content (UGC) about new products impacts a firm's advertising and pricing decisions and the effect on profits and market dynamics. We construct a two-period model where consumers value quality and are heterogeneous in their taste for the new... View Details
Keywords: Online Reviews; Product Ratings; Social Networks; Word Of Mouth; Pricing; User-generated Content; Advertising; Product Marketing; Price; Consumer Behavior; Product Positioning; Social Media
Fainmesser, Itay P., Dominique Olié Lauga, and Elie Ofek. "Ratings, Reviews, and the Marketing of New Products." Management Science 67, no. 11 (November 2021): 7023–7045.
- 2023
- Working Paper
Cognitive Uncertainty in Intertemporal Choice
By: Benjamin Enke and Thomas Graeber
This paper studies the relevance of cognitive uncertainty – subjective uncertainty over one's utility-maximizing action – for understanding and predicting intertemporal choice. The main idea is that when people are cognitively noisy, such as when a decision is complex,... View Details
Keywords: Cognitive Uncertainty; Intertemporal Choice; Cognition and Thinking; Complexity; Decision Choices and Conditions
Enke, Benjamin, and Thomas Graeber. "Cognitive Uncertainty in Intertemporal Choice." NBER Working Paper Series, No. 29577, December 2021. (R&R at The Quarterly Journal of Economics.)
- September–October 2021
- Article
Frontiers: Can an AI Algorithm Mitigate Racial Economic Inequality? An Analysis in the Context of Airbnb
By: Shunyuan Zhang, Nitin Mehta, Param Singh and Kannan Srinivasan
We study the effect of Airbnb’s smart-pricing algorithm on the racial disparity in the daily revenue earned by Airbnb hosts. Our empirical strategy exploits Airbnb’s introduction of the algorithm and its voluntary adoption by hosts as a quasi-natural experiment. Among... View Details
Keywords: Smart Pricing; Pricing Algorithm; Machine Bias; Discrimination; Racial Disparity; Social Inequality; Airbnb Revenue; Revenue; Race; Equality and Inequality; Prejudice and Bias; Price; Mathematical Methods; Accommodations Industry
Zhang, Shunyuan, Nitin Mehta, Param Singh, and Kannan Srinivasan. "Frontiers: Can an AI Algorithm Mitigate Racial Economic Inequality? An Analysis in the Context of Airbnb." Marketing Science 40, no. 5 (September–October 2021): 813–820.
- September 17, 2021
- Article
AI Can Help Address Inequity—If Companies Earn Users' Trust
By: Shunyuan Zhang, Kannan Srinivasan, Param Singh and Nitin Mehta
While companies may spend a lot of time testing models before launch, many spend too little time considering how they will work in the wild. In particular, they fail to fully consider how rates of adoption can warp developers’ intent. For instance, Airbnb launched a... View Details
Keywords: Artificial Intelligence; Algorithmic Bias; Technological Innovation; Perception; Diversity; Equality and Inequality; Trust; AI and Machine Learning
Zhang, Shunyuan, Kannan Srinivasan, Param Singh, and Nitin Mehta. "AI Can Help Address Inequity—If Companies Earn Users' Trust." Harvard Business Review Digital Articles (September 17, 2021).
- July 2021
- Article
Creating Exercise Habits Using Incentives: The Trade-off Between Flexibility and Routinization
By: John Beshears, Hae Nim Lee, Katherine L. Milkman, Robert Mislavsky and Jessica Wisdom
Habits involve regular, cue-triggered routines. In a field experiment, we tested whether incentivizing exercise routines—paying participants each time they visit the gym within a planned, daily two-hour window—leads to more persistent exercise than offering flexible... View Details
Keywords: Behavior And Behavioral Decision Making; Healthcare; Exercise; Habit; Routine; Health; Behavior; Decision Making
Beshears, John, Hae Nim Lee, Katherine L. Milkman, Robert Mislavsky, and Jessica Wisdom. "Creating Exercise Habits Using Incentives: The Trade-off Between Flexibility and Routinization." Management Science 67, no. 7 (July 2021): 4139–4171.
- July 2021
- Article
How Trust and Distrust Shape Perception and Memory
By: Ann-Christin Posten and Francesca Gino
Trust is a key ingredient in decision making, as it allows us to rely on the information we receive. Although trust is usually viewed as a positive element of decision making, we suggest that its effects on memory are costly rather than beneficial. Across nine studies... View Details
Posten, Ann-Christin, and Francesca Gino. "How Trust and Distrust Shape Perception and Memory." Journal of Personality and Social Psychology 121, no. 1 (July 2021): 43–58.
- 2021
- Working Paper
Accounting for Product Impact in the Oil and Gas Industry
By: Katie Panella, 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 oil and gas industry. We design a monetization methodology that allows us to calculate monetary product impact estimates of... View Details
Keywords: Product Innovation; Impact; Impact Investing; Impact Measurement; ESG; ESG (Environmental, Social, Governance) Performance; ESG Ratings; Social Corporate Responsibility; Corporate Social Responsibility; Social Impact; Oil; Oil & Gas; Oil And Gas; IWAI; Impact-Weighted Accounts; Product Design; Product Positioning; Society; Environmental Sustainability; Corporate Social Responsibility and Impact; Product
Panella, Katie, George Serafeim, and Katie Trinh. "Accounting for Product Impact in the Oil and Gas Industry." Harvard Business School Working Paper, No. 21-140, June 2021.
- 2021
- Working Paper
Accounting for Product Impact in the Pharmaceuticals Industry
By: Amanda Rischbieth, 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 pharmaceuticals industry. We design a monetization methodology that allows us to calculate monetary impact estimates of accessible... View Details
Keywords: Product Innovation; Impact; Impact Investing; Impact Measurement; ESG; ESG (Environmental, Social, Governance) Performance; ESG Ratings; Social Corporate Responsibility; Corporate Social Responsibility; Social Impact; Pharmaceutical Companies; Pharmaceuticals; IWAI; Product Design; Product Positioning; Society; Environmental Sustainability; Corporate Social Responsibility and Impact; Product; Safety; Pharmaceutical Industry
Rischbieth, Amanda, George Serafeim, and Katie Trinh. "Accounting for Product Impact in the Pharmaceuticals Industry." Harvard Business School Working Paper, No. 21-139, June 2021.
- 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
Keywords: Product Innovation; Impact; Impact Investing; Impact Measurement; ESG; ESG (Environmental, Social, Governance) Performance; ESG Ratings; Social Corporate Responsibility; Corporate Social Responsibility; Social Impact; Product Design; Product Positioning; Society; Product; Environmental Sustainability; Measurement and Metrics; Framework; Corporate Social Responsibility and Impact; Social Media; Technology Industry
Park, DG, George Serafeim, and Katie Trinh. "Accounting for Product Impact in the Interactive Media and Services Industry." Harvard Business School Working Paper, No. 21-134, June 2021.
- June 2021 (Revised November 2021)
- Case
Asian Corporate Governance Association: Stemming a 'Race to the Bottom' by Stock Exchanges?
By: Charles C.Y. Wang and Billy Chan
This case describes the movement towards dual-class listings on Asian stock exchanges and the efforts of the Asian Corporate Governance Association (ACGA), a not-for-profit shareholder advocacy group, to discourage this trend. As a not-for-profit organization with no... View Details
Keywords: Corporate Governance; Governance Controls; Nonprofit Organizations; Stocks; Financial Markets; Financial Services Industry; Hong Kong; China; Asia
Wang, Charles C.Y., and Billy Chan. "Asian Corporate Governance Association: Stemming a 'Race to the Bottom' by Stock Exchanges?" Harvard Business School Case 121-073, June 2021. (Revised November 2021.)