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Publications

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      • 2022
      • Working Paper

      Product2Vec: Leveraging Representation Learning to Model Consumer Product Choice in Large Assortments

      By: Fanglin Chen, Xiao Liu, Davide Proserpio and Isamar Troncoso
      We propose a method, Product2Vec, based on representation learning, that can automatically learn latent product attributes that drive consumer choices, to study product-level competition when the number of products is large. We demonstrate Product2Vec’s...  View Details
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      Chen, Fanglin, Xiao Liu, Davide Proserpio, and Isamar Troncoso. "Product2Vec: Leveraging Representation Learning to Model Consumer Product Choice in Large Assortments." NYU Stern School of Business Research Paper Series, July 2022.
      • July, 2022
      • Article

      Telehealth Visits After Shoulder Surgery: Higher Patient Satisfaction and Lower Costs

      By: Evan A. O'Donnell, Jillian E. Haberli, Andres Muniz Martinez, Daniel Yagoda, Robert S. Kaplan and Jon J.P. Warner
      Purpose and Methods: The study compared the cost of telemedicine visits with in-person clinic visits for routine follow-up after common shoulder surgeries. It also evaluated the safety and patient experience with telemedicine visits. Time-driven activity-based costing...  View Details
      Keywords: Health Care and Treatment; Communication Technology; Health Industry
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      O'Donnell, Evan A., Jillian E. Haberli, Andres Muniz Martinez, Daniel Yagoda, Robert S. Kaplan, and Jon J.P. Warner. "Telehealth Visits After Shoulder Surgery: Higher Patient Satisfaction and Lower Costs." Journal of the American Academy of Orthopedic Surgeons Global Research and Reviews 6, no. 7 (July, 2022).
      • July 2022
      • Article

      When Alterations Are Violations: Moral Outrage and Punishment in Response to (Even Minor) Alterations to Rituals

      By: Daniel H. Stein, Juliana Schroeder, Nicholas M. Hobson, Francesca Gino and Michael I. Norton
      From Catholics performing the sign of the cross since the 4th century to Americans reciting the Pledge of Allegiance since the 1890s, group rituals (i.e., predefined sequences of symbolic actions) have strikingly consistent features over time. Seven studies (N = 4,213)...  View Details
      Keywords: Ritual; Morality; Groups; Norms; Commitment; Groups and Teams; Values and Beliefs; Change; Moral Sensibility; Behavior
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      Stein, Daniel H., Juliana Schroeder, Nicholas M. Hobson, Francesca Gino, and Michael I. Norton. "When Alterations Are Violations: Moral Outrage and Punishment in Response to (Even Minor) Alterations to Rituals." Journal of Personality and Social Psychology 123, no. 1 (July 2022): 123–153.
      • 2022
      • Working Paper

      Punishing Without Looking for Reputational Gain

      By: Jillian J. Jordan and Nour S. Kteily
      Critics of “outrage culture” allege that “virtue signaling” drives people to punish alleged wrongdoers without due consideration. But do people actually “punish without looking” for reputational gain? And if so, is this because unquestioning punishment looks...  View Details
      Keywords: Opposing Perspectives; Outrage Culture; Signaling; Ideology; Moralistic Punishment; Perspective; Behavior; Reputation; Decision Making
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      Jordan, Jillian J., and Nour S. Kteily. "Punishing Without Looking for Reputational Gain." Harvard Business School Working Paper, No. 22-073, June 2022.
      • June 2022
      • Article

      The Welfare Effects of Peer Entry in the Accommodation Market: The Case of Airbnb and the Accommodation Industry

      By: Chiara Farronato and Andrey Fradkin
      We study the effects of enabling peer supply through Airbnb in the accommodation industry. We present a model of competition between flexible and dedicated sellers—peer hosts and hotels—who provide differentiated products. We estimate this model using data from major...  View Details
      Keywords: Peer To Peer; Airbnb; Digital Platforms; Market Entry and Exit; Competition; Accommodations Industry
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      Farronato, Chiara, and Andrey Fradkin. "The Welfare Effects of Peer Entry in the Accommodation Market: The Case of Airbnb and the Accommodation Industry." American Economic Review 112, no. 6 (June 2022): 1782–1817.
      • May 2022
      • Supplement

      Maestro Pizza (B): The Competition Awakens

      By: Ramon Casadesus-Masanell and Fares Khrais
      Maestro pizza opened its first store in 2013 after its founder, Khalid Al Omran, recognized an opportunity in Saudi Arabia to offer high quality pizza at affordable prices. The business grew rapidly and under the radar at first, but soon enough caught the attention of...  View Details
      Keywords: Competitive Strategy; Competitive Advantage; Competition; Market Entry and Exit; Emerging Markets; Business Startups; Corporate Entrepreneurship; Product Positioning; Disruption; Disruptive Innovation; Advertising; Advertising Campaigns; Social Media; Forecasting and Prediction; Crisis Management; Growth and Development Strategy; Brands and Branding; Product Development; Production; Service Delivery; Business Growth and Maturation; Financial Statements; Cost Management; Analysis; Quality; Performance Consistency; Customer Satisfaction; Profit; Family Ownership; Food and Beverage Industry; Saudi Arabia; Middle East
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      Casadesus-Masanell, Ramon, and Fares Khrais. "Maestro Pizza (B): The Competition Awakens." Harvard Business School Supplement 722-400, May 2022.
      • May 2022
      • Supplement

      Maestro Pizza (C): Taking the Fight Outside

      By: Ramon Casadesus-Masanell and Fares Khrais
      Maestro pizza opened its first store in 2013 after its founder, Khalid Al Omran, recognized an opportunity in Saudi Arabia to offer high quality pizza at affordable prices. The business grew rapidly and under the radar at first, but soon enough caught the attention of...  View Details
      Keywords: Competitive Strategy; Competitive Advantage; Competition; Market Entry and Exit; Emerging Markets; Business Startups; Corporate Entrepreneurship; Product Positioning; Disruption; Disruptive Innovation; Advertising; Advertising Campaigns; Social Media; Forecasting and Prediction; Crisis Management; Growth and Development Strategy; Brands and Branding; Product Development; Production; Service Delivery; Business Growth and Maturation; Financial Statements; Cost Management; Analysis; Quality; Performance Consistency; Customer Satisfaction; Profit; Family Ownership; Food and Beverage Industry; Middle East; Saudi Arabia
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      Casadesus-Masanell, Ramon, and Fares Khrais. "Maestro Pizza (C): Taking the Fight Outside." Harvard Business School Supplement 722-401, May 2022.
      • May 2022
      • Case

      Maestro Pizza: Coming in Hot!

      By: Ramon Casadesus-Masanell and Fares Khrais
      Maestro Pizza opened its first store in 2013 after its founder, Khalid Al Omran, recognized an opportunity in Saudi Arabia to offer high quality pizza at affordable prices. The business grew rapidly and under the radar at first, but soon enough caught the attention of...  View Details
      Keywords: Competitive Strategy; Competitive Advantage; Competition; Market Entry and Exit; Emerging Markets; Business Startups; Corporate Entrepreneurship; Product Positioning; Disruption; Disruptive Innovation; Advertising; Advertising Campaigns; Social Media; Forecasting and Prediction; Crisis Management; Growth and Development Strategy; Brands and Branding; Product Development; Production; Service Delivery; Business Growth and Maturation; Financial Statements; Cost Management; Analysis; Quality; Performance Consistency; Customer Satisfaction; Profit; Family Ownership; Food and Beverage Industry; Middle East; Saudi Arabia
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      Casadesus-Masanell, Ramon, and Fares Khrais. "Maestro Pizza: Coming in Hot!" Harvard Business School Case 722-399, May 2022.
      • May 2022
      • Article

      The Impact of COVID-19 on Digital Communication Patterns

      By: Evan DeFilippis, Stephen Michael Impink, Madison Singell, Jeff Polzer and Raffaella Sadun
      We explore the impact of COVID-19 on employees’ digital communication patterns through an event study of lockdowns in 16 large metropolitan areas in North America, Europe, and the Middle East. Using de-identified, aggregated meeting and email meta-data from 3,143,270...  View Details
      Keywords: Meetings; Email; COVID-19 Pandemic; Communication Technology; Health Pandemics; Time Management
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      DeFilippis, Evan, Stephen Michael Impink, Madison Singell, Jeff Polzer, and Raffaella Sadun. "The Impact of COVID-19 on Digital Communication Patterns." Humanities and Social Sciences Communications 9, no. 180 (May 2022).
      • 2022
      • Working Paper

      Causal Inference During A Pandemic: Evidence on the Effectiveness of Nebulized Ibuprofen as an Unproven Treatment for COVID-19 in Argentina

      By: Sebastian Calonico, Rafael Di Tella and Juan Cruz Lopez Del Valle
      Many medical decisions during the pandemic were made without the support of causal evidence obtained in clinical trials. We study the case of nebulized ibuprofen (NaIHS), a drug that was extensively used on COVID-19 patients in Argentina amidst wild claims about its...  View Details
      Keywords: COVID-19; Drug Treatment; Health Pandemics; Health Care and Treatment; Decision Making; Outcome or Result; Argentina
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      Calonico, Sebastian, Rafael Di Tella, and Juan Cruz Lopez Del Valle. "Causal Inference During A Pandemic: Evidence on the Effectiveness of Nebulized Ibuprofen as an Unproven Treatment for COVID-19 in Argentina." NBER Working Paper Series, No. 30084, May 2022.
      • 2022
      • Working Paper

      Small Campaign Donors

      By: Laurent Bouton, Julia Cagé, Edgard Dewitte and Vincent Pons
      In this paper, we study the characteristics and behavior of small donors, and compare them to those of large donors. We first build a novel dataset including all the 340 million individual contributions reported to the U.S. Federal Election Commission between 2005 and...  View Details
      Keywords: Campaign Finance; Campaign Contributions; Small Donations; ActBlue; WinRed; TV Advertising; Political Elections; Finance; Demographics; Advertising; Analysis; Analytics and Data Science
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      Bouton, Laurent, Julia Cagé, Edgard Dewitte, and Vincent Pons. "Small Campaign Donors." NBER Working Paper Series, No. 30050, May 2022.
      • 2022
      • Working Paper

      Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers

      By: Magie Cheng and Shunyuan Zhang
      The growth of the influencer marketing industry warrants an empirical examination of the effect of posting sponsored videos on an influencer’s reputation. We collect a novel dataset of user-generated YouTube videos created by prominent English-speaking influencers in...  View Details
      Keywords: Influencer Marketing; Social Influencers; Brand; Sponsorship; Video Analytics; Marketing; Brands and Branding; Media; Reputation
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      Cheng, Magie, and Shunyuan Zhang. "Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers." Harvard Business School Working Paper, No. 22-067, April 2022.
      • 2022
      • Working Paper

      A Linear Panel Model with Heterogeneous Coefficients and Variation in Exposure

      By: Jesse M. Shapiro and Liyang Sun
      Linear panel models featuring unit and time fixed effects appear in many areas of empirical economics. An active literature studies the interpretation of the ordinary least squares estimator of the model, commonly called the two-way fixed effects (TWFE) estimator, in...  View Details
      Keywords: Econometric Models; Mathematical Methods
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      Shapiro, Jesse M., and Liyang Sun. "A Linear Panel Model with Heterogeneous Coefficients and Variation in Exposure." NBER Working Paper Series, No. 29976, April 2022.
      • March 2022 (Revised May 2022)
      • Case

      Winning Business at Russell Reynolds (A)

      By: Ethan Bernstein and Cara Mazzucco
      In an effort to make compensation drive collaboration, Russell Reynolds Associates’ (RRA) CEO Clarke Murphy sought to re-engineer the bonus system for his executive search consultants in 2016. As his HR analytics guru, Kelly Smith, points out, that risks upsetting–and...  View Details
      Keywords: Compensation; Collaboration; Executive Search Firms; Consulting Firms; Compensation and Benefits; Restructuring; Human Resources; Human Capital; Management Practices and Processes; Organizational Culture; Organizational Change and Adaptation; Social and Collaborative Networks; Recruitment; Selection and Staffing; Talent and Talent Management; Consulting Industry; Employment Industry; Asia; Europe; Latin America; Middle East; North and Central America; South America; Oceania
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      Bernstein, Ethan, and Cara Mazzucco. "Winning Business at Russell Reynolds (A)." Harvard Business School Case 422-045, March 2022. (Revised May 2022.)
      • March 2022
      • Supplement

      Winning Business at Russell Reynolds (B)

      By: Ethan Bernstein and Cara Mazzucco
      In an effort to make compensation drive collaboration, Russell Reynolds Associates’ (RRA) CEO Clarke Murphy sought to re-engineer the bonus system for his executive search consultants in 2016. As his HR analytics guru, Kelly Smith, points out, that risks upsetting–and...  View Details
      Keywords: Compensation; Collaboration; Executive Search Firms; Consulting Firms; Compensation and Benefits; Restructuring; Human Resources; Human Capital; Management Practices and Processes; Organizational Culture; Organizational Change and Adaptation; Social and Collaborative Networks; Recruitment; Selection and Staffing; Talent and Talent Management; Consulting Industry; Employment Industry; Asia; Europe; Latin America; Middle East; North and Central America; South America; Oceania
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      Bernstein, Ethan, and Cara Mazzucco. "Winning Business at Russell Reynolds (B)." Harvard Business School Supplement 422-046, March 2022.
      • Article

      Health App Policy: International Comparison of Nine Countries' Approaches

      By: Anna Essén, Ariel Dora Stern, Christoffer Bjerre Haase, Josip Car, Felix Greaves, Dragana Paparova, Steven Vandeput, Rik Wehrens and David W. Bates
      An abundant and growing supply of digital health applications (apps) exists in the commercial tech-sector, which can be bewildering for clinicians, patients, and payers. A growing challenge for the health care system is therefore to facilitate the identification of...  View Details
      Keywords: Digital Health; Apps; Health Care and Treatment; Internet and the Web; Policy; Global Range; Applications and Software
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      Essén, Anna, Ariel Dora Stern, Christoffer Bjerre Haase, Josip Car, Felix Greaves, Dragana Paparova, Steven Vandeput, Rik Wehrens, and David W. Bates. "Health App Policy: International Comparison of Nine Countries' Approaches." npj Digital Medicine 5, no. 31 (2022).
      • Article

      The Messy but Essential Pursuit of Purpose

      By: Ranjay Gulati
      Most forward-thinking executives have embraced the notion that purpose-driven companies can solve social and environmental problems while also generating wealth, creating win-win outcomes that benefit everyone. But ideal solutions are rare. Many purpose-driven...  View Details
      Keywords: Purpose; Sustainability; Mission and Purpose; Social Issues; Environmental Sustainability; Profit; Business and Stakeholder Relations; Decision Making
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      Gulati, Ranjay. "The Messy but Essential Pursuit of Purpose." Harvard Business Review 100, no. 2 (March–April 2022): 45–55.
      • March 2022
      • Article

      When Less Is More: Consumers Prefer Brands that Donate More in Relative versus Absolute Terms

      By: Elizabeth A. Keenan, Anne V. Wilson and Leslie K. John
      When trying to make a good impression on consumers through charitable giving, is it better for brands to maximize the overall dollars they donate or how much they give in relative terms; for example, the proportion of profits? Across five studies we show that consumers...  View Details
      Keywords: Cause-related Marketing; Charitable Donations; Generosity; Altruism; Philanthropy and Charitable Giving; Brands and Branding; Consumer Behavior
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      Keenan, Elizabeth A., Anne V. Wilson, and Leslie K. John. "When Less Is More: Consumers Prefer Brands that Donate More in Relative versus Absolute Terms." Marketing Letters 33, no. 1 (March 2022): 31–43.
      • February 2022
      • Supplement

      SpartanNash Company: The Amazon Warrants (A)

      By: Benjamin C. Esty, E. Scott Mayfield and Daniel Fisher
      As of 12/31/21, Amazon held $22 billion of equity and warrants in related companies. In fact, it often requests a free grant of warrants when it enters into a new commercial agreement with a supplier. Over the past 20 years, Amazon has gotten warrants almost 20...  View Details
      Keywords: Valuation; Value Creation; Consumer Behavior; Negotiation; Distribution; Ownership; Partners and Partnerships; Business Strategy; Equity; Distribution Industry; Food and Beverage Industry; United States
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      Esty, Benjamin C., E. Scott Mayfield, and Daniel Fisher. "SpartanNash Company: The Amazon Warrants (A)." Harvard Business School Spreadsheet Supplement 222-704, 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).
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