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- Faculty Publications (50)
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- All HBS Web (234)
- Faculty Publications (50)
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- 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
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.
- Article
Do Post-menopausal Women Provide More Care to Their Kin?: Evidence of Grandparental Caregiving from Two Large-scale National Surveys
By: Marlise Hofer, Hanne Collins, Gita D. Mishra and Mark Schaller
Drawing on the logical principles of life-history theory, it may be hypothesized that—compared to pre-menopausal women—post-menopausal women will spend more time caring for grandchildren and other kin. This hypothesis was tested in two studies, on results obtained from... View Details
Hofer, Marlise, Hanne Collins, Gita D. Mishra, and Mark Schaller. "Do Post-menopausal Women Provide More Care to Their Kin?: Evidence of Grandparental Caregiving from Two Large-scale National Surveys." Evolution and Human Behavior 40, no. 4 (July 2019): 355–364.
- July 31, 2017
- Article
A Commitment Contract to Achieve Virologic Suppression in Poorly Adherent Patients with HIV/AIDS
By: Marcella Alsan, John Beshears, Wendy S. Armstrong, James J. Choi, Brigitte C. Madrian, Minh Ly T. Nguyen, Carlos Del Rio, David Laibson and Vincent C. Marconi
Objective: Assess whether a commitment contract informed by behavioral economics leads to persistent virologic suppression among HIV-positive patients with poor antiretroviral therapy (ART) adherence.
Design: Single-center pilot randomized clinical trial and a... View Details
Keywords: Adherence; Antiretroviral Therapy; Behavioral Economics; Commitment Contract; Financial Incentives; HIV-1 Virologic Suppression; Health Disorders; Motivation and Incentives
Alsan, Marcella, John Beshears, Wendy S. Armstrong, James J. Choi, Brigitte C. Madrian, Minh Ly T. Nguyen, Carlos Del Rio, David Laibson, and Vincent C. Marconi. "A Commitment Contract to Achieve Virologic Suppression in Poorly Adherent Patients with HIV/AIDS." AIDS 31, no. 12 (July 31, 2017): 1765–1769.
- 2000
- Other Unpublished Work
Do Executive Stock Options Encourage Risk-Taking?
Executive stock options create incentives for executives to manage firms in ways that maximize firm market value. Since options increase in value with the volatility of the underlying stock, executive stock options provide managers with incentives to take actions that... View Details
Cohen, Randolph B., Brian J. Hall, and Luis M. Viceira. "Do Executive Stock Options Encourage Risk-Taking?" 2000.
- 2018
- Working Paper
Corporate Tax Cuts Increase Income Inequality
By: Suresh Nallareddy, Ethan Rouen and Juan Carlos Suárez Serrato
This paper studies the effects of corporate tax changes on income inequality. Using state corporate tax rate changes as a setting, we show that cutting state corporate tax rates leads to increases in income inequality. This result is robust to using regression and... View Details
Nallareddy, Suresh, Ethan Rouen, and Juan Carlos Suárez Serrato. "Corporate Tax Cuts Increase Income Inequality." Harvard Business School Working Paper, No. 18-101, May 2018.
- June 2024
- Article
Redistributive Allocation Mechanisms
By: Mohammad Akbarpour, Piotr Dworczak and Scott Duke Kominers
Many scarce public resources are allocated at below-market-clearing prices, and sometimes for free. Such "non-market" mechanisms sacrifice some surplus, yet they can potentially improve equity. We develop a model of mechanism design with redistributive concerns. Agents... View Details
Akbarpour, Mohammad, Piotr Dworczak, and Scott Duke Kominers. "Redistributive Allocation Mechanisms." Journal of Political Economy 132, no. 6 (June 2024): 1831–1875. (Authors' names are in certified random order.)
- May 2017
- Article
Agent-based Modeling: A Guide for Social Psychologists
By: Joshua Conrad Jackson, David Rand, Kevin Lewis, Michael I. Norton and Kurt Gray
Agent-based modeling is a longstanding but underused method that allows researchers to simulate artificial worlds for hypothesis testing and theory building. Agent-based models (ABMs) offer unprecedented control and statistical power by allowing researchers to... View Details
Jackson, Joshua Conrad, David Rand, Kevin Lewis, Michael I. Norton, and Kurt Gray. "Agent-based Modeling: A Guide for Social Psychologists." Social Psychological & Personality Science 8, no. 4 (May 2017): 387–395.
- spring 2006
- Article
All's Fair in Love, War & Bankruptcy?: Corporate Governance Implications of CEO Turnover in Financial Distress
Prior discussions of management turnover during financial distress have examined bankrupt and non-bankrupt firms as distinct groupings with little overlap. Separately investigating rates of turnover in-bankruptcy and out-of-bankruptcy, without a direct comparison... View Details
Bernstein, Ethan S. "All's Fair in Love, War & Bankruptcy?: Corporate Governance Implications of CEO Turnover in Financial Distress." Stanford Journal of Law, Business & Finance 11, no. 2 (spring 2006): 228–325.
- spring 2006
- Article
All's Fair in Love, War, & Bankruptcy: Corporate Governance Implications of CEO Turnover in Financial Distress
Prior discussions of management turnover during financial distress have examined bankrupt and non-bankrupt firms as distinct groupings with little overlap. Separately investigating rates of turnover in-bankruptcy and out-of-bankruptcy, without a direct comparison... View Details
Keywords: CEO Turnover; Bankruptcy; Restructuring; Shadow Of Bankruptcy; Borrowing and Debt; Credit; Financing and Loans; Corporate Governance; Finance; Theory; Markets; United States
Bernstein, Ethan S. "All's Fair in Love, War, & Bankruptcy: Corporate Governance Implications of CEO Turnover in Financial Distress." Stanford Journal of Law, Business & Finance 11, no. 2 (spring 2006): 299–325.
- 22 Aug 2012
- Working Paper Summaries
A Randomized Field Study of a Leadership WalkRounds™-Based Intervention
agreed to implement an 18-month long WalkRounds -based program to improve safety. We compared their results to 138 work areas in 48 randomly selected control hospitals. Participants: We conducted the program in four types of clinical work... View Details
- 2023
- Working Paper
Nailing Prediction: Experimental Evidence on the Value of Tools in Predictive Model Development
By: Daniel Yue, Paul Hamilton and Iavor Bojinov
Predictive model development is understudied despite its centrality in modern artificial
intelligence and machine learning business applications. Although prior discussions
highlight advances in methods (along the dimensions of data, computing power, and
algorithms)... View Details
Keywords: Analytics and Data Science
Yue, Daniel, Paul Hamilton, and Iavor Bojinov. "Nailing Prediction: Experimental Evidence on the Value of Tools in Predictive Model Development." Harvard Business School Working Paper, No. 23-029, December 2022. (Revised April 2023.)
- 2023
- Working Paper
An Experimental Design for Anytime-Valid Causal Inference on Multi-Armed Bandits
By: Biyonka Liang and Iavor I. Bojinov
Typically, multi-armed bandit (MAB) experiments are analyzed at the end of the study and thus require the analyst to specify a fixed sample size in advance. However, in many online learning applications, it is advantageous to continuously produce inference on the... View Details
Liang, Biyonka, and Iavor I. Bojinov. "An Experimental Design for Anytime-Valid Causal Inference on Multi-Armed Bandits." Harvard Business School Working Paper, No. 24-057, March 2024.
- Research Summary
Do Appearances Matter? The Impact of EPS Accretion and Dilution on Stock Prices
There is a widespread concern among practitioners and corporate managers that transactions which result in changes in future earnings-per-share (EPS) have real effects on stock prices, irrespective of whether these changes reflect differences in future cash flows. As... View Details
- 2013
- Working Paper
Cross-Border Reverse Mergers: Causes and Consequences
By: Jordan Siegel and Yanbo Wang
We study non-U.S. companies that have used reverse mergers as a means to adopt U.S. corporate law (and sometimes U.S. securities law as well). Early adopters of cross-border reverse mergers and those firms that hired a Big Four auditor exhibited superior corporate... View Details
Siegel, Jordan, and Yanbo Wang. "Cross-Border Reverse Mergers: Causes and Consequences." Harvard Business School Working Paper, No. 12-089, April 2012. (Revised December 2012, March 2013, September 2013.)
- Article
Do the Right Firms Survive Bankruptcy?
By: Samuel Antill
In U.S. Chapter 11 bankruptcy cases, firms are either reorganized, acquired, or liquidated. I show that decisions to liquidate often reduce creditor recovery, costing creditors billions of dollars every year. I exploit the within-district random assignment of... View Details
Keywords: Bankruptcy; Bankruptcy Reorganization; Recovery Rate; Structural Estimation; Roy Model; 363 Sales; Insolvency and Bankruptcy; Governing Rules, Regulations, and Reforms
Antill, Samuel. "Do the Right Firms Survive Bankruptcy?" Journal of Financial Economics 144, no. 2 (May 2022): 523–546.
- September–October 2013
- Article
The Dynamic Advertising Effect of Collegiate Athletics
By: Doug J. Chung
I measure the spillover effect of intercollegiate athletics on the quantity and quality of applicants to institutions of higher education in the United States, popularly known as the "Flutie Effect." I treat athletic success as a stock of goodwill that decays over... View Details
Keywords: Choice Modeling; Entertainment Marketing; Heterogeneity; Panel Data; Structural Modeling; Rights; Analytics and Data Science; Higher Education; Ethics; Consumer Behavior; Advertising; Sports; Advertising Industry; Education Industry
Chung, Doug J. "The Dynamic Advertising Effect of Collegiate Athletics." Marketing Science 32, no. 5 (September–October 2013): 679–698. (Lead article. Featured in HBS Working Knowledge.)
- August 2004
- Article
Inequality and Happiness: Are Europeans and Americans Different?
By: Rafael Di Tella, Alberto Alesina and Robert MacCulloch
We study the effect of the level of inequality in society on individual well-being using a total of 123,668 answers to a survey question about “happiness”. We find that individuals have a lower tendency to report themselves happy when inequality is high, even after... View Details
Di Tella, Rafael, Alberto Alesina, and Robert MacCulloch. "Inequality and Happiness: Are Europeans and Americans Different?" Journal of Public Economics 88, nos. 9-10 (August 2004): 2009–42.
- January–February 2011
- Article
Adverse Selection in Online 'Trust' Certifications and Search Results
By: Benjamin Edelman
Widely used online "trust" authorities issue certifications without substantial verification of recipients' actual trustworthiness. This lax approach gives rise to adverse selection: the sites that seek and obtain trust certifications are actually less trustworthy than... View Details
Keywords: Online Advertising; Governing Rules, Regulations, and Reforms; Policy; Safety; Trust; Internet; Search Technology; Web Sites
Edelman, Benjamin. "Adverse Selection in Online 'Trust' Certifications and Search Results." Electronic Commerce Research and Applications 10, no. 1 (January–February 2011): 17–25.
- January 2020
- Article
The Market Reacts Quickly: Changes in Paclitaxel Vascular Device Purchasing Within the Ascension Healthcare System
By: Peter P. Monteleone, Subhash Banerjee, Priya Kothapalli, Ariel Dora Stern, Daniel Fehder, Ron Ginor, Dominic Vollmar, Edward T. A. Fry and Mark J. Pirwitz
Background. A meta-analysis of trials in endovascular therapy suggested an increased mortality associated with treatment exposure to paclitaxel. Multiple publications and corrections of prior data were performed, and the United States Food and Drug Administration has... View Details
Monteleone, Peter P., Subhash Banerjee, Priya Kothapalli, Ariel Dora Stern, Daniel Fehder, Ron Ginor, Dominic Vollmar, Edward T. A. Fry, and Mark J. Pirwitz. "The Market Reacts Quickly: Changes in Paclitaxel Vascular Device Purchasing Within the Ascension Healthcare System." Journal of Invasive Cardiology 32, no. 1 (January 2020).
- 2018
- Working Paper
Show or Tell? Improving Agent Decision Making in a Tanzanian Mobile Money Field Experiment
By: Jason Acimovic, Chris Parker, David F. Drake and Karthik Balasubramanian
When workers make operational decisions, the firm's global knowledge and the workers’ domain-specific knowledge complement each other. Oftentimes workers have the final decision-making power. Two key decisions a firm makes when designing systems to support these... View Details
Keywords: Employees; Decision Making; Training; Performance Improvement; Money; Mobile Technology; Developing Countries and Economies; Financial Services Industry
Acimovic, Jason, Chris Parker, David F. Drake, and Karthik Balasubramanian. "Show or Tell? Improving Agent Decision Making in a Tanzanian Mobile Money Field Experiment." Harvard Business School Working Paper, No. 18-106, May 2018.