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  • 2016
  • Working Paper

Reviews, Reputation, and Revenue: The Case of Yelp.com

By: Michael Luca
Do online consumer reviews affect restaurant demand? I investigate this question using a novel dataset combining reviews from the website Yelp.com and restaurant data from the Washington State Department of Revenue. Because Yelp prominently displays a restaurant's... View Details
Keywords: Revenue; Network Effects; Reputation; Social and Collaborative Networks; Food and Beverage Industry; Service Industry; Washington (state, US)
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  • January 2017
  • Article

Impact Evaluation Methods in Public Economics: A Brief Introduction to Randomized Evaluations and Comparison with Other Methods

By: Dina Pomeranz
Recent years have seen a large expansion in the use of rigorous impact evaluation techniques. Increasingly, public administrations are collaborating with academic economists and other quantitative social scientists to apply such rigorous methods to the study of public... View Details
Keywords: Practice; Public Sector; Research; Policy; Performance Evaluation
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  • 2011
  • Working Paper

Divide and Rule or the Rule of the Divided? Evidence from Africa

By: Stelios Michalopoulos and Elias Papaioannou
We investigate jointly the importance of contemporary country-level institutional structures and local ethnic-specific pre-colonial institutions in shaping comparative regional development in Africa. We utilize information on the spatial distribution of African... View Details
Keywords: Ethnicity; Development Economics; Geography; Government and Politics; Africa
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  • 30 Mar 2010
  • First Look

First Look: March 30

features that became commonplace prior to the financial crisis. Download the paper: http://www.hbs.edu/research/pdf/10-083.pdf The Consequences of Entrepreneurial Finance: A Regression Discontinuity Analysis... View Details
Keywords: Sean Silverthorne
  • 2022
  • Working Paper

The Impact of Campaign Finance Rules on Candidate Selection and Electoral Outcomes: Evidence from France

By: Nikolaj Broberg, Vincent Pons and Clémence Tricaud
This paper investigates the effects of campaign finance rules on electoral outcomes. In French departmental and municipal elections, candidates competing in districts above 9,000 inhabitants face spending limits and are eligible for public reimbursement if they obtain... View Details
Keywords: Political Elections; Finance; Governing Rules, Regulations, and Reforms; Outcome or Result; France
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  • October 2023
  • Article

Innovation on Wings: When Do Nonstop Flights Matter for Global Innovation?

By: Dany Bahar, Prithwiraj Choudhury, Do Yoon Kim and Wesley Koo
We study whether, when, and how better connectivity through nonstop flights leads to positive innovation outcomes for firms in the global context. Using unique data of all flights emanating from 5,015 airports around the globe from 2005 to 2015 and exploiting a... View Details
Keywords: Nonstop Flights; Collaborative Innovation and Invention; Patents; Research and Development; Air Transportation Industry
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    Innovation on Wings: Nonstop Flights and Firm Innovation in the Global Context

    We study whether, when, and how better connectivity through nonstop flights leads to positive innovation outcomes for firms in the global context. Using unique data of all flights emanating from 5,015 airports around the globe from 2005 to 2015 and exploiting a... View Details
    • 2022
    • Working Paper

    Coordination and Incumbency Advantage in Multi-Party Systems: Evidence from French Elections

    By: Kevin Dano, Francesco Ferlenga, Vincenzo Galasso, Caroline Le Pennec and Vincent Pons
    In theory, free and fair elections can improve the selection of politicians and incentivize them to exert effort. In practice, incumbency advantage and coordination issues may lead to the (re)election of bad politicians. We ask whether these two forces compound each... View Details
    Keywords: Political Parties; Incumbent Politicians; Democracy; Political Elections; Competitive Advantage
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    • 2024
    • Working Paper

    Generative AI and the Nature of Work

    By: Manuel Hoffmann, Sam Boysel, Frank Nagle, Sida Peng and Kevin Xu
    Recent advances in artificial intelligence (AI) technology demonstrate considerable potential to complement human capital intensive activities. While an emerging literature documents wide-ranging productivity effects of AI, relatively little attention has been paid... View Details
    Keywords: Generative Ai; Digital Work; Open Source Software; Knowledge Economy; AI and Machine Learning; Open Source Distribution; Organizational Structure; Performance Productivity; Labor
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    • 2023
    • Working Paper

    Keep Your Enemies Closer: Strategic Platform Adjustments during U.S. and French Elections

    By: Rafael Di Tella, Randy Kotti, Caroline Le Pennec and Vincent Pons
    A key tenet of representative democracy is that politicians' discourse and policies should follow voters' preferences. In the median voter theorem, this outcome emerges as candidates strategically adjust their platform to get closer to their opponent. Despite its... View Details
    Keywords: Political Ideology; Political Elections; United States; France
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    • 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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    • 21 Feb 2018
    • Research & Ideas

    When a Competitor Abandons the Market, Should You Advance or Retreat?

    projects is higher quality than in technology areas without failure news." Based on regression analyses, Krieger estimates at least 129 of the terminated projects in his study would have continued if not for learning about... View Details
    Keywords: by Rachel Layne; Pharmaceutical; Health
    • 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... View Details
    • 24 Oct 2011
    • Research & Ideas

    The Yelp Factor: Are Consumer Reviews Good for Business?

    displayed to consumers. By applying a regression discontinuity analysis, Luca could study how revenues jumped when star thresholds were crossed and compare these with the more steady changes over time. The... View Details
    Keywords: by Michael Blanding; Food & Beverage
    • Web

    Faculty & Researchers - Managing the Future of Work

    Nicholas Torres. Formal Employment and Organized Crime: Regression Discontinuity Evidence from Colombia , Article, Economic Journal, August 2023. With Gaurav Khanna, Carlos Medina, Anant Nyshadham, and... View Details
    • 03 Jan 2011
    • Research & Ideas

    Most Popular Articles of 2010

    and innovate in their business models. HBS professor Ramon Casadesus-Masanell and Joan Enric Ricart present an integrative framework to distinguish and relate the concepts of business model, strategy, and tactics. The Consequences of Entrepreneurial Finance: A View Details
    Keywords: by Staff
    • 16 Aug 2011
    • First Look

    First Look: August 16

    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... View Details
    Keywords: Sean Silverthorne
    • 07 Jun 2016
    • First Look

    June 7, 2016

    avoidance (Slemrod, 2004; Crocker and Slemrod, 2005; Chen and Chu, 2005) by showing that increases in institutional ownership are associated with increases in tax avoidance. Using the Russell index reconstitution setting to isolate exogenous shocks to institutional... View Details
    Keywords: Sean Silverthorne
    • 19 Nov 2013
    • First Look

    First Look: November 19

    paper analyzes the effect of a woman's electoral victory on women's subsequent political participation. Using the regression discontinuity afforded by close elections between women and men in India's state... View Details
    Keywords: Sean Silverthorne
    • 19 Mar 2019
    • First Look

    New Research and Ideas, March 19, 2019

    of them can account for a quantitatively relevant fraction of our results. Download working paper: https://www.hbs.edu/faculty/Pages/item.aspx?num=54796 Formal Employment and Organized Crime: Regression View Details
    Keywords: Dina Gerdeman