I am a PhD student in Political Economy at Princeton University. I am interested in explaining variation in the time horizon of investive policies. Specifically, I use formal theory, machine learning- and causal inference methods to understand which factors enable long-term policymaking, with applications ranging from climate policy to AI safety. Methodologically, I am interested in studying when empirical measurements are commensurate with theory, that is studying the theoretical implications of empirical models (TIEM).
I hold a Master's degree in Political Science and Political Economy from the London School of Economics, as well as Bachelor's degree from the Free University of Berlin. From September 2023 through May 2025, I worked in the private sector as a data science and game theory consultant.

Research

Published (Peer-reviewed)

AS Heinze, B Höhne, F Wortmann Callejón. “What Drives the Intra-Party Democracy of the “Alternative for Germany”: Populist Ideology, Low Institutionalisation or Lacking Party Unity?“. Party Politics.
F Wortmann Callejón "Regional election in Berlin, 12 February 2023" Electoral Bulletins of the European Union.

Work-in-progress

A Könneke, F Wortmann Callejón. “Second-Order Effects in German State Elections: Quasi-Experimental Evidence from Berlin.”

Other Publications (Non peer-reviewed)

A Baumgartner, H Klepper, CE Müller, A Paillette-Liettilä, M Wessels, F Wortmann Callejón, A Souris (2022). “Demokratie im Krisenmodus: Parlamente in der Corona-Pandemie“. Refubium FU Berlin. http://dx.doi.org/10.17169/refubium-36176 [pdf]

Talks

08/2025: WZB Transformations of Democracy Junior Scholars Workshop
"Second-Order Effects in German State Elections: Quasi-Experimental Evidence from Berlin.".
09/2024: Tri-Annual Meeting of the GPSA
"Spillovers in Natural Disaster Research".
06/2023: Annual Meeting of the GPSA Analytical Political Theory Group
"Second-Order Effects in German State Elections: Quasi-Experimental Evidence from Berlin." with Anton Könneke.

Resources

In preparation for my Applied Regression Analysis exam at the LSE, I have prepared a cheat sheet on model assumptions, predictions, and coefficient interpretations. It's a compact guide on using OLS, binary-, multinomial-, and ordinal logistic regression, as well as Poisson and Negative-Binomial regression models. Please find it here.
In preparation for my Quantitative Analysis for Political Science exam at the LSE, I have prepared a cheat sheet on canonical models of causal inference. It's a compact guide on potential outcomes, RCTs, selection-on-observables, IV, RD and DD. Please find it here.