Arnold obtained his Bachelor degree in Economics from the University of Bielefeld and completed his Doctorate in Quantitative Economics at the University of Alicante. He then held a postdoctoral research position at the University of Minnesota. Before joining the UEA, he lectured at Queen’s University Belfast. Arnold's research interests are mainly in socio-economic networks, game theory, financial economics with occasional ventures into other areas.

Key Publications in the last 5 years

Polanski, A., Sikora, J. , 2025, What Can We Learn from Applying Machine Learning to Bargaining?. Computational Economics. https://doi.org/10.1007/s10614-025-11014-y

Polanski, A. 2024, Close-knit neighborhoods: Stability of cooperation in networks, Journal of Economic Theory, 215

Polanski, A. & Vega-Redondo, F. 2023, Homophily and influence, Journal of Economic Theory, 207

Polanski, A., 2019, Communication networks, externalities and the price of information. Rand Journal of Economics. 50, 2, p. 481-502

Polanski, A., Stoja, E. & Windmeijer, F., 2019, Telling tales from the tails: high-dimensional tail interdependence, Journal of Applied Econometrics. 34, 5, p. 779-794

Work in progress

Polanski, A.,  Cortes Corrales, S., 2025, Stability and resilience of alliances: A network approach, R&R Journal of Public Economics

Polanski, A. Stoja, E., & A.-F. Allard, 2025, Asymmetric Quantile Interdependence - An Axiomatic Approach, submitted to Journal of Business & Economic Statistics

Stoja, E., Polanski, A. and L.H. Nguyen, 2025, Tails of the Unexpected: What Drives the Negative Tail Risk Premium Anomaly?, submitted to Management Science

Polanski, A.,  Cortes Corrales, S., 2025, Survival in Economic Networks

Polanski, A., 2025, Information Flows and the Spread of Conspiracies

09/2007:      Postgraduate Certificate in Higher Education Teaching, Queen’s University Belfast.

1/2005:        Postdoctoral studies at the University of Minnesota

11/2004:      Ph.D. in Economics (European Doctor Mention), University of Alicante. Thesis advisor: Prof. Fernando Vega-Redondo

09/1999:      MSc in Quantitative Economics, University of Alicante

12/1993:      MA in Economics (Diplom-Volkswirt), University Bielefeld

Chair of Faculty Appeals and Complaints Panel

Plagiarism Officer

Lead of the Economic Theory Group

socio-economic networks,

information economics,

game theory,

financial economics,

financial (tail) risk

machine learning

socio-economic networks, game theory, financial tail risk