1. Frontier Knowledge and Scientific Production: Evidence from the Collapse of International Science (with Alessandro Iaria and Fabian Waldinger)
    [Quarterly Journal of Economics 133(2), pp. 927–991, 2018.]
    Selected Media Coverage: Eurasiareview, Times Higher Education, MyScience,,, Centre Piece

  2. ldagibbs: A command for Topic Modeling in Stata using Latent Dirichlet Allocation
    [Stata Journal 18(1), pp. 101–117, 2018.] [Code Files]

  3. lsemantica: A Stata Command for Text Similarity based on Latent Semantic Analysis
    [Stata Journal 19(1), pp. 129–142, 2019.] [Code Files]

Working Papers

  1. From Hashtag to Hate Crime: Twitter and Anti-Minority Sentiment
    (with Karsten Müller)
    Selected Media Coverage: Southern Poverty Law Center, NY Times Interpreter, Scientific American,, Stepfeed, ProMarket, The Daily Beast, Big Think, Religion News Service, The Canary, The National, The Week

  2. Fanning the Flames of Hate: Social Media and Hate Crime
    (with Karsten Müller)
    [Conditionally Accepted: Journal of the European Economic Association]
    Selected Media Coverage: The Economist, New York Times (1), New York Times (2), Financial Times, Guardian (1), Guardian (2), Times, VRT (Belgium Television), Bloomberg, Huffington Post, Deutsche Welle, Handelsblatt, Wirtschaftswoche, Pro Asyl,, Belltower News, The New European, TechCrunch, der Standard, Tagesspiegel, Golem, Luzerner Zeitung, EU Observer

  3. How Polarized are Citizens? Measuring Ideology from the Ground-Up
    (with Mirko Draca)
    Selected Media Coverage: New Statesman, Prospect Magazine,

  4. Tariffs and Politics: Evidence from Trump’s Trade Wars
    (with Thiemo Fetzer)
    [Conditionally Accepted: Economic Journal]
    Selected Media Coverage: The Economist, Forbes, Frankfurter Allgemeine Zeitung, Handelsblatt, Breitbart , Financial Post, El Mundo