Christoph Walsh

I am a PhD candidate in Economics at Boston University. My primary field of interest is Empirical Industrial Organization, with a secondary interest in Development Economics.

I am currently on the job market and will be available for interviews at the 2018 ASSA meetings in Philadelphia.





B16 264 Bay State Road, Boston, MA 02215
A pdf version of my CV is available here

Contact Information





B16 264 Bay State Road, Boston, MA 02215

Education

  • PhD Economics, Boston University
    Expected 2018
  • MSc. Economics, Trinity College Dublin, 2012
    Distinction
  • BA in Business and Economics, Trinity College Dublin, 2011
    First Class Honours and Gold Medal

Fields of Interest

  • Industrial Organization
  • Development Economics

Work in Progress

  • Branch Location Strategies and Financial Service Access in Thai Banking (with Marc Rysman and Robert M. Townsend).
  • Radio Regulation and Voter Turnout in Benin (with Calixte Ahokpossi).

Conferences and Presentations

  • Federal Communications Commission (Invited Seminar), Washington DC (September, 2017)
  • 15th Annual International Industrial Organization Conference, Boston (April, 2017)
  • 2017 ASSA Annual Meeting, Chicago (coauthor presented) (January, 2017)

Awards and Scholarships

Work Experience

  • Research Assistant for Juan Ortner, Boston University, Boston MA (May 2015-Present)
  • Research Assistant for Lesley Chiou, Occidental College, Los Angeles, CA (Summer 2014)
  • Research Assistant at the Economic and Social Research Institute, Dublin, Ireland (Summer 2011)

Teaching Experience

  • Instructor at Boston University
    Intermediate Microeconomics, Summer Term 2016, Summer Term 2017
  • Teaching Fellow at Boston University
    Principles of Microeconomics, Fall 2013-Spring 2015
  • Teaching Assistant at Trinity College Dublin
    Teaching Assistant for Mathematics and Statistics, Fall 2011-Spring 2012

Other

Languages: English (Native), German, Irish
Software: R, Python, C, Bash/Zsh, LaTeX, Stata

Overview

My primary field of interest is Empirical Industrial Organization, with a secondary interest in Development Economics.

In particular, my research focuses on dynamic oligopoly and regulation in developing countries. I study industries where firms have positive effects on the communities in which they operate, such as media and banking. Using dynamic structural models of entry and competition, I evaluate how counterfactual regulations could encourage entry of firms in rural areas without access.

Job Market Paper

  • Social Impacts of New Radio Markets in Ghana: A Dynamic Structural Analysis

    Abstract:
    Ghana liberalized its radio broadcasting sector in 1992 to allow the entry of commercial stations, where previously the state had a monopoly. I analyze how the broadcasting regulator affects commercial radio stations' decisions to enter and the resulting effects of coverage spillovers in rural areas. I compute the coverage areas of all radio stations to construct a dataset of which stations are available at every point in the country. I exploit random variation in radio coverage caused by coverage spilling through gaps in mountainous areas. I use this to estimate the effects of coverage on social outcomes, in particular malaria incidence and night lights growth. I then estimate a dynamic structural entry model for commercial stations where competition is measured by the overlaps of the stations' coverage areas. In counterfactual simulations using the model, I find that allowing higher transmitter strengths to be a particularly effective policy to deliver the social benefits of radio to new communities.

    Presented at:
    • Federal Communications Commission (Invited Seminar), Washington DC, September 2017
    • 15th Annual International Industrial Organization Conference, Boston, April 2017 (Won best rising star paper)


Work in Progress


  • Branch Location Strategies and Financial Service Access in Thai Banking, coauthored with Marc Rysman and Robert M. Townsend

    Abstract:
    We argue that the effect of financial crises on bank branch location choices provides an unexplored channel by which crises affect access to credit. We study the location strategies of banks in Thailand since the 1990s. We estimate a dynamic structural model of oligopolistic location choice, allowing for complementarity in payoffs for bank branches in nearby locations, as well as competitive effects between rival banks. We predict the evolution of bank branch locations under the counterfactual scenario of no financial crisis in 1997. We use these results to compute the impact of the financial crisis on financial access through the branch channel, based on previous studies of the effect of banking locations on access.

    Presented at:
    • 2017 ASSA Annual Meeting, Chicago (coauthor presented), January 2017



  • Radio Regulation and Voter Turnout in Benin, coauthored with Calixte Ahokpossi

    Abstract:
    We find a non-monotonic relationship between the number of radio stations and voter turnout in Benin. On average, the entry of the first two radio stations in a community increases voter turnout, while increased competition between stations decreases turnout. Motivated by this, we study the inefficiency of the broadcasting regulator in issuing licenses and its effect on the entry decisions of radio stations. We estimate a dynamic structural oligopoly model for radio stations, taking into account the regulatory inefficiency in the market. Counterfactual simulations using the model suggest that either removing regulatory inefficiency or targeted entry subsidies can spur entry in areas without radio stations. Such policies would increase voter turnout in these areas, as well as deliver other benefits of radio.

Previous Teaching

Teaching evaluations are available upon request

Instructor for EC201 Intermediate Microeconomics
Boston University, Summer II 2016 & Summer II 2017
Syllabus
Course webpage


Teaching Fellow for Principles of Microeconomics
Boston University, Fall 2013-Spring 2015


Teaching Assistant for Mathematics and Statistics
Trinity College Dublin, Fall 2011-Spring 2012