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Filter Results: (137) Arrow Down
Filter Results: (137) Arrow Down Arrow Up

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  • All HBS Web  (137)
    • News  (4)
    • Research  (119)
    • Events  (1)
  • Faculty Publications  (56)

Show Results For

  • All HBS Web  (137)
    • News  (4)
    • Research  (119)
    • Events  (1)
  • Faculty Publications  (56)
← Page 3 of 137 Results →
  • March–April 2023
  • Article

Market Segmentation Trees

By: Ali Aouad, Adam Elmachtoub, Kris J. Ferreira and Ryan McNellis
Problem definition: We seek to provide an interpretable framework for segmenting users in a population for personalized decision making. Methodology/results: We propose a general methodology, market segmentation trees (MSTs), for learning market... View Details
Keywords: Decision Trees; Computational Advertising; Market Segmentation; Analytics and Data Science; E-commerce; Consumer Behavior; Marketplace Matching; Marketing Channels; Digital Marketing
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Aouad, Ali, Adam Elmachtoub, Kris J. Ferreira, and Ryan McNellis. "Market Segmentation Trees." Manufacturing & Service Operations Management 25, no. 2 (March–April 2023): 648–667.
  • September 2011
  • Article

Political Instability: Effects on Financial Development, Roots in the Severity of Economic Inequality

By: Mark J. Roe and Jordan I. Siegel
We here bring forward strong evidence that political instability impedes financial development, with its variation a primary determinant of differences in financial development around the world. As such, it needs to be added to the short list of major determinants of... View Details
Keywords: Financial Development; Political Instability; Government and Politics; Finance; Growth and Development; Economics; Equality and Inequality
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Roe, Mark J., and Jordan I. Siegel. "Political Instability: Effects on Financial Development, Roots in the Severity of Economic Inequality." Journal of Comparative Economics 39, no. 3 (September 2011): 279–309. (We here bring forward strong evidence that political instability impedes financial development, with its variation a primary determinant of differences in financial development around the world. As such, it needs to be added to the short list of major determinants of financial development. First, structural conditions first postulated by Engerman and Sokoloff (2002) as generating long-term inequality are shown here empirically to be exogenous determinants of political instability. Second, that exogenously-determined political instability in turn holds back financial development, even when we control for factors prominent in the last decade's cross-country studies of financial development. The findings indicate that inequality-perpetuating conditions that result in political instability are fundamental roadblocks for international organizations like the World Bank that seek to promote financial development. The evidence here includes country fixed effect regressions and an instrumental model inspired by Engerman and Sokoloff's (2002) work, which to our knowledge has not yet been used in finance and which is consistent with current tests as valid instruments. Four conventional measures of national political instability — Alesina and Perotti's (1996) well-known index of instability, a subsequent index derived from Banks' (2005) work, and two indices of managerial perceptions of nation-by-nation political instability — persistently predict a wide range of national financial development outcomes for recent decades. Political instability's significance is time consistent in cross-sectional regressions back to the 1960's, the period when the key data becomes available, robust in both country fixed-effects and instrumental variable regressions, and consistent across multiple measures of instability and of financial development. Overall, the results indicate the existence of an important channel running from structural inequality to political instability, principally in nondemocratic settings, and then to financial backwardness. The robust significance of that channel extends existing work demonstrating the importance of political economy explanations for financial development and financial backwardness. It should help to better understand which policies will work for financial development, because political instability has causes, cures, and effects quite distinct from those of many of the key institutions most studied in the past decade as explaining financial backwardness.)
  • Research Summary

Communication (and Coordination?) in a Modern, Complex Organization

This is a descriptive study of the structure of communications in a modern organization. We analyze a dataset with millions of electronic mail messages, calendar meetings and teleconferences for many thousands of employees of a single, multidivisional firm during a... View Details

    Best-selling and New Cases by Ben Esty

    Best-Selling Cases:  

      1) Eaton: Portfolio Transformation & Cost of... View Details

    • 2025
    • Working Paper

    Extractive Taxation and the French Revolution

    By: Tommaso Giommoni, Gabriel Loumeau and Marco Tabellini
    We study the fiscal determinants of the French Revolution, exploiting plausibly exogenous variation in the salt tax—a large source of royal revenues and one of the most extractive forms of taxation of the Ancien Régime. Implementing a Regression Discontinuity... View Details
    Keywords: Extractive Taxation; Regime Change; French Revolution; State Capacity; Taxation; History; Government Administration; Attitudes; Public Opinion
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    Giommoni, Tommaso, Gabriel Loumeau, and Marco Tabellini. "Extractive Taxation and the French Revolution." Harvard Business School Working Paper, No. 25-047, April 2025. (Featured at VoxEU.)
    • 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
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    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).
    • 2021
    • Working Paper

    An Empirical Study of Time Allotment and Delays in E-commerce Delivery

    By: M. Balakrishnan, MoonSoo Choi and Natalie Epstein
    Problem definition: We study how having more time allotted to deliver an order affects the speed of the delivery process. Furthermore, we seek to predict orders that are likely to be delayed early in the delivery process so that actions can be taken to avoid delays.... View Details
    Keywords: Logistics; E-commerce; Mathematical Methods; AI and Machine Learning; Performance Productivity
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    Balakrishnan, M., MoonSoo Choi, and Natalie Epstein. "An Empirical Study of Time Allotment and Delays in E-commerce Delivery." Working Paper, December 2021.
    • March 2022
    • Article

    Assessing the Impact of the COVID-19 Pandemic on Clinician Ambulatory Electronic Health Record Use

    By: A Jay Holmgren, Lance Downing, Mitchell Tang, Christopher Sharp, Christopher Longhurst and Robert S. Huckman
    Objective: The COVID-19 pandemic changed clinician electronic health record (EHR) work in a multitude of ways. To evaluate how, we measure ambulatory clinician EHR use in the United States throughout the COVID-19 pandemic.

    Materials and Methods: We use EHR... View Details
    Keywords: Health Care; Electronic Health Records; Productivity; COVID-19 Pandemic; Health Care and Treatment; Health Pandemics; Information Technology; Performance Productivity; United States
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    Holmgren, A Jay, Lance Downing, Mitchell Tang, Christopher Sharp, Christopher Longhurst, and Robert S. Huckman. "Assessing the Impact of the COVID-19 Pandemic on Clinician Ambulatory Electronic Health Record Use." Journal of the American Medical Informatics Association 29, no. 3 (March 2022): 453–460.
    • May 2021
    • Article

    Choice Architecture in Physician–patient Communication: A Mixed-methods Assessment of Physicians' Competency

    By: J. Hart, K. Yadav, S. Szymanski, A. Summer, A. Tannenbaum, J. Zlatev, D. Daniels and S.D. Halpern
    Background: Clinicians’ use of choice architecture, or how they present options, systematically influences the choices made by patients and their surrogate decision makers. However, clinicians may incompletely understand this influence.... View Details
    Keywords: Choice Architecture; Health Care and Treatment; Interpersonal Communication; Decision Choices and Conditions; Competency and Skills
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    Hart, J., K. Yadav, S. Szymanski, A. Summer, A. Tannenbaum, J. Zlatev, D. Daniels, and S.D. Halpern. "Choice Architecture in Physician–patient Communication: A Mixed-methods Assessment of Physicians' Competency." BMJ Quality & Safety 30, no. 5 (May 2021).
    • Article

    Are All Certified EHRs Created Equal? Assessing the Relationship between EHR Vendor and Hospital Meaningful Use Performance

    By: A Jay Holmgren, Julia Adler-Milstein and Jeffrey McCullough
    Objective
    The federal electronic health record (EHR) certification process was intended to ensure a baseline level of system quality and the ability to support meaningful use criteria. We sought to assess whether there was variation across EHR vendors in the... View Details
    Keywords: Hospitals; Electronic Health Records; Digital Health; Health Care and Treatment; Information Technology; Service Delivery; Performance Evaluation
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    Holmgren, A Jay, Julia Adler-Milstein, and Jeffrey McCullough. "Are All Certified EHRs Created Equal? Assessing the Relationship between EHR Vendor and Hospital Meaningful Use Performance." Journal of the American Medical Informatics Association 25, no. 6 (June 2018): 654–660. (Editor's Choice.)
    • 30 Mar 2010
    • First Look

    First Look: March 30

    people believe the risk decreases (negative recency) but at the same time exhibit more cautious behavior (positive recency). The rest of the difference is consistent with two well established mechanisms: judgment error and the use of small samples in choice.... View Details
    Keywords: Sean Silverthorne
    • 16 May 2017
    • First Look

    First Look at New Ideas and Research, May 16

    Markets By: Menon, Anoop R., and Dennis Yao Abstract—This paper explores how mental models affect the analysis of dynamic strategic interactions. We develop an explanation-based view of mental models founded... View Details
    Keywords: Re: Multiple Faculty
    • Web

    Business, Government & the International Economy - Faculty & Research

    extractive forms of taxation of the Ancien Régime. Implementing a Regression Discontinuity design (RDD), we find that parts of France subject to a higher salt tax experienced more revolts against the monarchy between 1750 and 1789. These... View Details
    • Web

    Online Business Analytics Course | HBS Online

    using Excel and interpret the output 8 hrs Module 5 Multiple Regression Identify relationships among three or more variables to improve understanding of data and provide better forecasts. Highlights Single Versus Multiple View Details
    • Web

    Business & Environment - Faculty & Research

    path from dirty to clean technology. We then estimate the model using a combination of regression analysis on the relationship between R&D and patents, and simulated method of moments using microdata on... View Details
    • Web

    Entrepreneurship - Faculty & Research

    over small changes in their collective interest levels to implement a regression discontinuity approach. We confirm the positive effects for venture operations, with qualitative support for a higher likelihood of successful exits. On the... View Details
    • 19 Jan 2016
    • First Look

    January 19, 2016

    forthcoming Cambridge, MA: MIT Press Revolutionizing Innovation: Users, Communities, and Open Innovation By: Harhoff, Dietmar, and Karim R. Lakhani, eds. Abstract—The last two decades have witnessed an extraordinary growth of new models... View Details
    Keywords: Sean Silverthorne
    • Web

    Training Materials - Research Computing Services

    Sciences Stanford's full-day R workshop using Open Policing / Traffic Stop data R Graphics with ggplot2 Static notes with code examples and results All workshop materials as downloadable archive Main site for all R materials Regression... View Details
    • 23 Dec 2014
    • First Look

    First Look: December 23

    dirty to clean technology. We then estimate the model using a combination of regression analysis on the relationship between R&D and patents, and simulated method of moments using microdata on... View Details
    Keywords: Carmen Nobel
    • 02 Feb 2010
    • First Look

    First Look: Feb. 2

    and Finance (forthcoming). (Also Harvard Business School Working Paper No. 05-053 and NBER Working Paper No. 13131.) Abstract The main arguments in favor of and against nominal and indexed debt are the incentive to default through inflation versus hedging against... View Details
    Keywords: Martha Lagace
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