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Jack Frederick Fitzgerald

External PhD Candidate, School of Business and Economics, Ethics, Governance and Society

Personal information

I am a PhD candidate in economics at Vrije Universiteit (VU) Amsterdam. I work on issues in applied econometrics, replication, and economics of science.

I am positioned in the Behavioral Social Sciences group within the Department of Ethics, Governance, and Society in the School of Business and Economics. I also teach at the Department of Criminology in the Faculty of Law.

Research

I am dedicated to improving methods in scientific research. My research can broadly be categorized as follows:

Replication-based methods research. I work to evidence the importance of methodological improvements through re-analyzing the replication data of large numbers of published articles that use similar methods. My job market paper evidences the importance of equivalence testing in 81 articles that advertise null results, my paper on log-like specifications re-analyzes 46 articles that use such specifications, and my paper on manipulation tests in regression discontinuity design re-analyzes 36 published articles using such designs.
Equivalence testing and practical significance testing. My job market paper introduces methods that can provide statistically significant evidence that economic relationships are practically equal to zero. In their absence, error rates in top economics journals are quite high. I’ve also employed these tests in empirical applications, such as my article in Journal of Business Ethics, and in extended methodological applications, such as in my tutorial on three-sided testing.
Robustness tests for causal inference. I work on methods for testing critical assumptions in causal designs, including manipulation tests in regression discontinuity design and hypothetical bias experiments.
Replication. I have reproduced over 140 papers throughout my PhD, and I have published replication work in Nature Human Behaviour, Journal of Political Economy: Microeconomics, and two times in the Proceedings of the National Academy of Sciences. I have several comments under invited (re)submission concerning publications in American Economic Journal: Applied Economics and Management Science.