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Show Results For
- All HBS Web
(1,560)
- People (2)
- News (230)
- Research (1,212)
- Events (29)
- Multimedia (1)
- Faculty Publications (587)
- Article
The Importance of Being Causal
By: Iavor I Bojinov, Albert Chen and Min Liu
Causal inference is the study of how actions, interventions, or treatments affect outcomes of interest. The methods that have received the lion’s share of attention in the data science literature for establishing causation are variations of randomized experiments.... View Details
Keywords: Causal Inference; Observational Studies; Cross-sectional Studies; Panel Studies; Interrupted Time-series; Instrumental Variables
Bojinov, Iavor I., Albert Chen, and Min Liu. "The Importance of Being Causal." Harvard Data Science Review 2.3 (July 30, 2020).
- Forthcoming
- Article
Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers
By: Mengjie Cheng and Shunyuan Zhang
The growth of the influencer marketing industry warrants an empirical examination of the effect of posting sponsored videos on influencers' reputations. We collected a novel dataset of user-generated YouTube videos created by prominent English-speaking influencers in... View Details
Keywords: Reputation; Mathematical Methods; Marketing Reference Programs; Social Media; Brands and Branding
Cheng, Mengjie, and Shunyuan Zhang. "Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers." Management Science (forthcoming). (Pre-published online October 18, 2024.)
- 2019
- Working Paper
Persuasive Propaganda During the 2015 Argentine Ballotage
By: Rafael Di Tella, Sebastian Galiani and Ernesto Schargrodsky
We study a propaganda campaign sponsored by the government against the main political challenger in the days preceding the 2015 Argentine runoff presidential election. Subjects in the treatment group watched an “ad” initially aired during soccer transmissions that was... View Details
Keywords: Propaganda; Persuasion; Voting; Political Elections; Government and Politics; Communication Strategy; Power and Influence; Public Opinion; Argentina
Di Tella, Rafael, Sebastian Galiani, and Ernesto Schargrodsky. "Persuasive Propaganda During the 2015 Argentine Ballotage." Harvard Business School Working Paper, No. 20-030, September 2019. (Revised November 2019.)
- April 2017
- Supplement
Imprimis (B)
By: Ramon Casadesus-Masanell, Karen Elterman and Marc Appel
This case is a supplement to Imprimis (A). It describes the company’s decision to enter into the pharmaceutical compounding business in 2013–2014. Imprimis purchased a compounded ophthalmological medication called Dropless Therapy, which was injected into patients’... View Details
Keywords: Healthcare; Drug Compounding; Drug Development; Pharmaceuticals; Small Business; Decision-making, Business Model; Mark Baum; Imprimis; Decision Making; Strategy; Health Care and Treatment; Policy; Pharmaceutical Industry; United States
Casadesus-Masanell, Ramon, Karen Elterman, and Marc Appel. "Imprimis (B)." Harvard Business School Supplement 717-496, April 2017.
- 2021
- Working Paper
Venture Capital's 'Me Too' Moment
By: Sophie Calder-Wang, Paul A. Gompers and Patrick Sweeney
In this paper, we document the historically low rate of hiring of women in the venture capital sector. We find that the high-profile Ellen Pao v. Kleiner Perkins gender discrimination trial had dramatic treatment effects. In difference-in-differences regressions, we... View Details
Keywords: Gender Discrimination; Founders; Venture Capital; Selection and Staffing; Gender; Lawsuits and Litigation
Calder-Wang, Sophie, Paul A. Gompers, and Patrick Sweeney. "Venture Capital's 'Me Too' Moment." NBER Working Paper Series, No. 28679, April 2021.
- 02 Nov 2016
- HBS Seminar
Antoinette Schoar, MIT Sloan School of Management
- May 2023 (Revised June 2023)
- Supplement
Novartis (C): Reimagining Medicine
By: Ramon Casadesus-Masanell, Claudio Feser, Karolin Frankenberger and David Redaschi
This case unfolds around the first-ever approved personalized cancer treatment, how Novartis wrapped it into a new business model design, and how Novartis scaled it. Novartis — one of the largest pharmaceutical companies in the world — is, among other ventures,... View Details
Keywords: Health Testing and Trials; Health Care and Treatment; Business Model; Problems and Challenges; Pharmaceutical Industry; Switzerland
Casadesus-Masanell, Ramon, Claudio Feser, Karolin Frankenberger, and David Redaschi. "Novartis (C): Reimagining Medicine." Harvard Business School Supplement 723-445, May 2023. (Revised June 2023.)
- April 1993 (Revised May 1994)
- Case
Genzyme Corporation: Strategic Challenges with Ceredase
Genzyme Corp., one of the largest biotechnology companies, has succeeded in developing, manufacturing, and commercializing its first therapeutic, a treatment for a rare genetic disease. Analysis of the case requires students to identify and understand how Genzyme has... View Details
Keywords: Risk Management; Risk and Uncertainty; Corporate Strategy; Technology; Health; Product Development; Biotechnology Industry; Pharmaceutical Industry; United States
Teisberg, Elizabeth O., and Sharon L. Rossi. "Genzyme Corporation: Strategic Challenges with Ceredase." Harvard Business School Case 793-120, April 1993. (Revised May 1994.)
- 2018
- Working Paper
OTC Intermediaries
By: Andrea L. Eisfeldt, Bernard Herskovic, Sriram Rajan and Emil Siriwardane
Over-the-counter (OTC) markets for financial assets are dominated by a relatively small number of core intermediaries and a large number of peripheral customers. In this paper, we develop a model of trade in a core-periphery network and estimate its key structural... View Details
Keywords: OTC Markets; Intermediaries; Dealers; Credit Default Swaps; Risk Sharing; Networks; Price; Risk and Uncertainty
Eisfeldt, Andrea L., Bernard Herskovic, Sriram Rajan, and Emil Siriwardane. "OTC Intermediaries." Working Paper, August 2018.
- Article
On the Causality and Cause of Returns to Organizational Status: Evidence from the Grands Crus Classés of the Médoc
By: Daniel Malter
This paper identifies the causal symbolic effect of status on the prices organizations charge for their products. I exploit the classification of the châteaux of the Médoc, which sorted 61 wine producers into five growth classes in 1855, as a fixed hierarchical symbol... View Details
Keywords: Organizational Status; Quality Signals; Conspicuous Consumption; Wine Classification Of 1855; Grand Cru; Status and Position; Quality; Reputation; Price; France
Malter, Daniel. "On the Causality and Cause of Returns to Organizational Status: Evidence from the Grands Crus Classés of the Médoc." Administrative Science Quarterly 59, no. 2 (June 2014): 271–300.
- 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
Athey, Susan, Kristen Grabarz, Michael Luca, and Nils Wernerfelt. "Digital Public Health Interventions at Scale: The Impact of Social Media Advertising on Beliefs and Outcomes Related to COVID Vaccines." e2208110120. Proceedings of the National Academy of Sciences 120, no. 5 (January 23, 2023).
- 2023
- Working Paper
Money, Time, and Grant Design
By: Kyle Myers and Wei Yang Tham
The design of research grants has been hypothesized to be a useful tool for
influencing researchers and their science. We test this by conducting two thought
experiments in a nationally representative survey of academic researchers. First,
we offer participants a... View Details
Myers, Kyle, and Wei Yang Tham. "Money, Time, and Grant Design." Harvard Business School Working Paper, No. 24-037, December 2023.
- Article
What We Can Learn from Five Naturalistic Field Experiments that Failed to Shift Commuter Behaviour
By: Ariella S. Kristal and A.V. Whillans
Across five field experiments with employees of a large organization (n = 68,915), we examined whether standard behavioural interventions (“nudges”) successfully reduced single-occupancy vehicle commutes. In Studies 1 and 2, we sent letters and emails with nudges... View Details
Kristal, Ariella S., and A.V. Whillans. "What We Can Learn from Five Naturalistic Field Experiments That Failed to Shift Commuter Behaviour." Nature Human Behaviour 4, no. 2 (February 2020): 169–176. (This article was featured on the cover as the lead article.)
- May 2023 (Revised June 2023)
- Supplement
Novartis (B): Reimagining Medicine
By: Ramon Casadesus-Masanell, Claudio Feser, Karolin Frankenberger and David Redaschi
This case unfolds around the first-ever approved personalized cancer treatment, how Novartis wrapped it into a new business model design, and how Novartis scaled it. Novartis — one of the largest pharmaceutical companies in the world — is, among other ventures,... View Details
Keywords: Health Care and Treatment; Business Model; Production; Business Strategy; Pharmaceutical Industry
Casadesus-Masanell, Ramon, Claudio Feser, Karolin Frankenberger, and David Redaschi. "Novartis (B): Reimagining Medicine." Harvard Business School Supplement 723-444, May 2023. (Revised June 2023.)
- May 2023 (Revised June 2023)
- Case
Novartis (A): Reimagining Medicine
By: Ramon Casadesus-Masanell, Claudio Feser, Karolin Frankenberger and David Redaschi
This case unfolds around the first-ever approved personalized cancer treatment, how Novartis wrapped it into a new business model design, and how Novartis scaled it. Novartis — one of the largest pharmaceutical companies in the world — is, among other ventures,... View Details
Keywords: Health Care and Treatment; Business Model; Leadership; Pharmaceutical Industry; Switzerland
Casadesus-Masanell, Ramon, Claudio Feser, Karolin Frankenberger, and David Redaschi. "Novartis (A): Reimagining Medicine." Harvard Business School Case 723-443, May 2023. (Revised June 2023.)
- 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.
- 2021
- Working Paper
Diagnosing Quality: Learning, Amenities, and the Demand for Health Care
By: Achyuta Adhvaryu, Emilio Gutierrez, Anant Nyshadham and Jorge Tamayo
We study the role of amenities in increasing demand for underutilized healthcare services. We evaluate the offer of a high-amenity diagnostic consultation for cataracts with a randomized price and find that a lower price for the high-amenity consultation increases... View Details
Keywords: Health Care Demand; Amenities; Health Care Quality; Cataracts; Surgery; Health Care and Treatment; Demand and Consumers; Quality; Learning; Mexico
Adhvaryu, Achyuta, Emilio Gutierrez, Anant Nyshadham, and Jorge Tamayo. "Diagnosing Quality: Learning, Amenities, and the Demand for Health Care." Harvard Business School Working Paper, No. 21-110, March 2021.
- 10 Jun 2022
- News
Consumer Responses to Corporate Bankruptcy
- 2021
- Working Paper
Stock Investors' Returns Are Exaggerated
By: Jesse M. Fried, Paul Ma and Charles C.Y. Wang
The stock market generates less wealth than it appears. We show that total shareholder return (TSR), the standard measure of stock investor performance, substantially exaggerates returns earned by these investors in aggregate, and thus by most investors. The main... View Details
Keywords: All-shareholder Returns; Capital Flows; Dividend Reinvestment; Equity Premium; Total Shareholder Returns; Stocks; Investment Return; Market Timing
Fried, Jesse M., Paul Ma, and Charles C.Y. Wang. "Stock Investors' Returns Are Exaggerated." Harvard Business School Working Paper, No. 22-036, November 2021.
- Research Summary
Credit Supply Shocks, Network Effects, and the Real Economy
By: Laura Alfaro
We consider the real effects of bank lending shocks and how they permeate the economy through buyer-supplier linkages. We combine administrative data on all firms in Spain with a matched bank-firm-loan dataset with information on the universe of corporate loans for... View Details