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      • March 2022
      • Article

      Learning to Rank an Assortment of Products

      By: Kris Ferreira, Sunanda Parthasarathy and Shreyas Sekar
      We consider the product ranking challenge that online retailers face when their customers typically behave as “window shoppers”: they form an impression of the assortment after browsing products ranked in the initial positions and then decide whether to continue... View Details
      Keywords: Online Learning; Product Ranking; Assortment Optimization; Learning; Internet and the Web; Product Marketing; Consumer Behavior; E-commerce
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      Ferreira, Kris, Sunanda Parthasarathy, and Shreyas Sekar. "Learning to Rank an Assortment of Products." Management Science 68, no. 3 (March 2022): 1828–1848.
      • March 2022
      • Article

      Sensitivity Analysis of Agent-based Models: A New Protocol

      By: Emanuele Borgonovo, Marco Pangallo, Jan Rivkin, Leonardo Rizzo and Nicolaj Siggelkow
      Agent-based models (ABMs) are increasingly used in the management sciences. Though useful, ABMs are often critiqued: it is hard to discern why they produce the results they do and whether other assumptions would yield similar results. To help researchers address such... View Details
      Keywords: Agent-based Modeling; Sensitivity Analysis; Design Of Experiments; Total Order Sensitivity Indices; Organizations; Behavior; Decision Making; Mathematical Methods
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      Borgonovo, Emanuele, Marco Pangallo, Jan Rivkin, Leonardo Rizzo, and Nicolaj Siggelkow. "Sensitivity Analysis of Agent-based Models: A New Protocol." Computational and Mathematical Organization Theory 28, no. 1 (March 2022): 52–94.
      • 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
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      Serafeim, George, and Aaron Yoon. "Which Corporate ESG News Does the Market React To?" Financial Analysts Journal 78, no. 1 (2022): 59–78.
      • March 2022
      • Article

      Winner Takes All? Tech Clusters, Population Centers, and the Spatial Transformation of U.S. Invention

      By: Brad Chattergoon and William R. Kerr
      U.S. invention has become increasingly concentrated around major tech centers since the 1970s, with implications for how much cities across the country share in concomitant local benefits. Is invention becoming a winner-takes-all race? We explore the rising spatial... View Details
      Keywords: Clusters; Invention; Agglomeration; Artificial Intelligence; Innovation and Invention; Patents; Applications and Software; Industry Clusters; AI and Machine Learning
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      Chattergoon, Brad, and William R. Kerr. "Winner Takes All? Tech Clusters, Population Centers, and the Spatial Transformation of U.S. Invention." Art. 104418. Research Policy 51, no. 2 (March 2022).
      • February 18, 2022
      • Article

      Transparency as a Solution for COVID-19 Related Hospital Capacity Issues

      By: Regina E. Herzlinger and Richard Boxer
      In the initial phases of the COVID-19 pandemic, many U.S. hospitals could not provide an adequate supply of beds to meet demand. Solving the problem of hospital bed capacity is of great importance in the “new normal,” which requires recognizing that SARS-CoV-2 is but... View Details
      Keywords: COVID; COVID-19 Pandemic; Health Care; Health Care Demand; Health Care Delivery; Health Care Industry; Health Care Operations; Health Care Policy; Transparency; Hospital; Hospital Management; Hospitals; Health Pandemics; Health Care and Treatment; Service Delivery; Operations; Performance Capacity; Policy; Health Industry
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      Herzlinger, Regina E., and Richard Boxer. "Transparency as a Solution for COVID-19 Related Hospital Capacity Issues." Health Affairs Forefront (February 18, 2022).
      • February 2022
      • Case

      Paul Polman

      By: Elizabeth A. Keenan, Youngme Moon and Susie Ma
      Over his 40-year career, Paul Polman had led some of the world’s largest consumer goods companies, making his biggest mark as CEO of Unilever—a multi-national corporation that produced everything from soap to soup. Polman was also well-regarded as a leader in corporate... View Details
      Keywords: Marketing; Brands and Branding; Marketing Communications; Marketing Strategy; Leadership; Corporate Accountability; Personal Development and Career; Corporate Social Responsibility and Impact; Ethics; Values and Beliefs; Social Issues; Philanthropy and Charitable Giving
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      Keenan, Elizabeth A., Youngme Moon, and Susie Ma. "Paul Polman." Harvard Business School Case 322-098, February 2022.
      • February 8, 2022
      • Article

      Time-Driven Activity-Based Cost Comparison of Treating Five Acute, Low-Severity Conditions

      By: Alan Yang, Andy Hung-Yi Lee, Joseph W. Kopp, Katherine D. Rose, Adam M. Licurse, Philip D. Anderson and Robert S. Kaplan
      In 2017, patients made 145 million visits to emergency departments (EDs), generating $76.3 billion in charges. About a third of ED visits, however, were for conditions that were treatable in lower-resourced settings. We used time-driven activity-based costing (TDABC)... View Details
      Keywords: Time-Driven ABC; Health Care Costs; Activity Based Costing and Management; Health Care and Treatment
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      Yang, Alan, Andy Hung-Yi Lee, Joseph W. Kopp, Katherine D. Rose, Adam M. Licurse, Philip D. Anderson, and Robert S. Kaplan. "Time-Driven Activity-Based Cost Comparison of Treating Five Acute, Low-Severity Conditions." NEJM Catalyst (February 8, 2022).
      • 2022
      • Working Paper

      The Routledge Handbook of Digital Consumption, Chapter 41: The Internet’s Effects on Consumption: Useful, Harmful, Playful

      By: John A. Deighton and Leora Kornfeld
      This chapter considers how digital culture has changed over the past decade, as the internet has grown its scope and user base. Billions around the world connect daily to an ever-expanding set of applications. A framework for thinking about digital effects is offered:... View Details
      Keywords: Digital Culture; Internet and the Web; Consumer Behavior; Society
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      Deighton, John A., and Leora Kornfeld. "The Routledge Handbook of Digital Consumption, Chapter 41: The Internet’s Effects on Consumption: Useful, Harmful, Playful." Harvard Business School Working Paper, No. 22-049, January 2022.
      • 2022
      • Working Paper

      The Transformation of Self Employment

      By: Innessa Colaiacovo, Margaret Dalton, Sari Pekkala Kerr and William R. Kerr
      Over the past half-century, while self-employment has consistently accounted for around one in ten of the United States workforce, its composition has changed. Since 1970, industries with high startup capital requirements have declined from 53% of self-employment to... View Details
      Keywords: Self-employment; Startup Investment; Occupational Choice; Financing; Small Business; Entrepreneurship; Business Startups; Financing and Loans
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      Colaiacovo, Innessa, Margaret Dalton, Sari Pekkala Kerr, and William R. Kerr. "The Transformation of Self Employment." Harvard Business School Working Paper, No. 22-051, January 2022.
      • February 2022
      • Case

      Business Roundtable 2019 Statement: A New Paradigm or Business as Usual?

      By: Charles C.Y. Wang and Amram Migdal
      This note focuses on the antecedents of, reactions to, and clarifications about The Business Roundtable’s August 19, 2019, “Statement on the Purpose of a Corporation.” The note includes background information on corporate governance as practiced in the United States in... View Details
      Keywords: Corporate Accountability; Corporate Governance; Business History; Mission and Purpose; Agency Theory; Business and Shareholder Relations; Business and Stakeholder Relations; Corporate Social Responsibility and Impact; United States
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      Wang, Charles C.Y., and Amram Migdal. "Business Roundtable 2019 Statement: A New Paradigm or Business as Usual?" Harvard Business School Case 122-023, February 2022.
      • 2022
      • Working Paper

      Hate Crime Increases with Minoritized Group Rank

      By: Marco E. Tabellini
      People are on the move in unprecedented numbers within and between countries. How does demographic change affect local intergroup dynamics? In complement to accounts that emphasize stereotypical features of groups as determinants of their treatment, we propose the... View Details
      Keywords: Prejudice; Minority; Hate Crimes; Reference Dependence; Demographics; Rank and Position; Prejudice and Bias; Crime and Corruption
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      Cikara, Mina, Vasiliki Fouka, and Marco Tabellini. "Hate Crime Increases with Minoritized Group Rank." Harvard Business School Working Paper, No. 21-075, February 2022. (Permanent link here. Forthcoming at Nature Human Behaviour.)
      • 2024
      • Working Paper

      What Triggers National Stock Market Jumps?

      By: Scott R. Baker, Nicholas Bloom, Steven J. Davis and Marco Sammon
      We examine newspapers the day after major stock-market jumps to evaluate the proximate cause, geographic source, and clarity of these events from 1900 in the US, 1930 in the UK and 1980 in 12 other countries. We find four main results. First, the United States plays an... View Details
      Keywords: Uncertainty; Policy Uncertainty; Stock Market; Financial Markets; Volatility; Risk and Uncertainty; Policy; Newspapers
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      Baker, Scott R., Nicholas Bloom, Steven J. Davis, and Marco Sammon. "What Triggers National Stock Market Jumps?" Working Paper, December 2024.
      • January 2022
      • Background Note

      The Florange Law: Encouraging Long-Termism in Equity Markets?

      By: Charles C.Y. Wang and Tonia Labruyere
      This note provides background information on a French law (“the Florange law”) passed in 2014 that the French government said would encourage long-term shareholdings. The note describes the law, what led to it, the reactions it evoked, and similar initiatives in other... View Details
      Keywords: Equity; Financial Markets; Investment Activism; Institutional Investing; Corporate Governance; Policy; Rights; Laws and Statutes; Business and Government Relations; Accounting Industry; France
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      Wang, Charles C.Y., and Tonia Labruyere. "The Florange Law: Encouraging Long-Termism in Equity Markets?" Harvard Business School Background Note 122-065, January 2022.
      • January 2022
      • Technical Note

      Introduction to Capital Structure Analytics

      By: Samuel Antill and Ted Berk
      This technical note provides an overview of key analytical approaches that are useful in assessing the appropriateness of a firm’s capital structure and funding plan. This note introduces basic quantitative tools and metrics that are commonly used as inputs to this... View Details
      Keywords: Budgets and Budgeting; Business Plan; Forecasting and Prediction; Borrowing and Debt; Corporate Finance; Capital Structure; Cash Flow; Financial Liquidity; Financial Management; Financing and Loans
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      Antill, Samuel, and Ted Berk. "Introduction to Capital Structure Analytics." Harvard Business School Technical Note 222-061, January 2022.
      • January 2022 (Revised March 2022)
      • Module Note

      Analysis of Financial and Non-Financial Information for Forecasting Performance

      By: Charles C.Y. Wang
      This note describes the main themes and cases of a teaching module on the analysis of information from, and outside of, financial statements for forecasting firms’ future financial performance. The module’s pedagogical goal is to deepen students’ understanding of the... View Details
      Keywords: Financial Reporting; Performance; Analysis; Valuation; Accounting; Finance
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      Wang, Charles C.Y. "Analysis of Financial and Non-Financial Information for Forecasting Performance." Harvard Business School Module Note 122-071, January 2022. (Revised March 2022.)
      • January 2022 (Revised February 2022)
      • Case

      Introducing EVA at ISS: A Better Way to Evaluate CEO Performance and Compensation?

      By: Jonas Heese, Charles C.Y. Wang and James Weber
      In early 2019, Anthony Campagna, the global director of fundamental research at ISS EVA, a unit of the proxy advisory firm Institutional Shareholder Services (ISS), was preparing to release ISS's analyses of public company performance and CEO compensation ahead of Say... View Details
      Keywords: Jobs and Positions; Compensation and Benefits; Performance; Performance Productivity; Measurement and Metrics; Analytics and Data Science; Value; Business or Company Management; Performance Evaluation; Business and Shareholder Relations
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      Heese, Jonas, Charles C.Y. Wang, and James Weber. "Introducing EVA at ISS: A Better Way to Evaluate CEO Performance and Compensation?" Harvard Business School Case 122-061, January 2022. (Revised February 2022.)
      • January 2022
      • Background Note

      Residual Income Valuation Model

      By: Charles C.Y. Wang and Albert Shin
      This note explains the residual income valuation model (RIM), how it relates to "traditional" valuation models, the intuition behind its use, and empirical research related to its value relevance. RIM is theoretically equivalent to the dividend discount model and the... View Details
      Keywords: Residual Income Valuation; Valuation; Research; Theory; Measurement and Metrics; Performance; Financial Management; Business Strategy
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      Wang, Charles C.Y., and Albert Shin. "Residual Income Valuation Model." Harvard Business School Background Note 122-070, January 2022.
      • February 2022
      • Article

      Client Concerns about Information Spillovers from Sharing Audit Partners

      By: Jung Koo Kang, Clive Lennox and Vivek Pandey
      We hypothesize that companies in the same product market avoid sharing the same audit partner when they are concerned about possible information spillovers. Consistent with our hypothesis, we find that product market rivals are less likely to share the same partner... View Details
      Keywords: Information Spillovers; Audit Partners; Proprietary Costs; Product Market Rivals; Audit Fee; Audit Quality; Information; Accounting Audits
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      Kang, Jung Koo, Clive Lennox, and Vivek Pandey. "Client Concerns about Information Spillovers from Sharing Audit Partners." Art. 101434. Journal of Accounting & Economics 73, no. 1 (February 2022).
      • January 2022
      • Article

      Artificial Intelligence, Data-Driven Learning, and the Decentralized Structure of Platform Ecosystems

      By: David R. Clough and Andy Wu
      Gregory, Henfridsson, Kaganer, and Kyriakou (2020) highlight the important role of data and AI as strategic resources that platforms may use to enhance user value. However, their article overlooks a significant conceptual distinction: the installed base of... View Details
      Keywords: Artificial Intelligence; Data Strategy; Ecosystem; Value Capture; Digital Platforms; Analytics and Data Science; Strategy; Learning; Value Creation; AI and Machine Learning; Technology Industry; Information Technology Industry; Video Game Industry; Advertising Industry
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      Clough, David R., and Andy Wu. "Artificial Intelligence, Data-Driven Learning, and the Decentralized Structure of Platform Ecosystems." Academy of Management Review 47, no. 1 (January 2022): 184–189.
      • 2022
      • Article

      Improving Efficiency and Reducing Costs of MRI-Guided Prostate Brachytherapy Using Time-Driven Activity-Based Costing

      By: Nikhil G. Thaker, Rajat J. Kudchadker, James R. Incalcaterra, Tharakeswara K. Bathala, Robert S. Kaplan, Ankit Agarwal, Deborah A. Kuban, Benjamin D. Frank, Prajnan Das, Thomas W. Feeley and Steven J. Frank
      Integrated quality improvement (QI) and cost reduction strategies can help increase value in cancer care. We applied standard QI and TDABC methods to improve workflow efficiency and reduce costs for MRI-guided prostate brachytherapy. We constructed process maps,... View Details
      Keywords: Brachytherapy; Quality Improvement; Prostate; Time-Driven Activity-Based Costing; Cost Accounting; Health Care and Treatment; Performance Efficiency; Health Industry
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      Thaker, Nikhil G., Rajat J. Kudchadker, James R. Incalcaterra, Tharakeswara K. Bathala, Robert S. Kaplan, Ankit Agarwal, Deborah A. Kuban, Benjamin D. Frank, Prajnan Das, Thomas W. Feeley, and Steven J. Frank. "Improving Efficiency and Reducing Costs of MRI-Guided Prostate Brachytherapy Using Time-Driven Activity-Based Costing." Brachytherapy 21, no. 1 (2022): 49–54.
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