I am a Research Associate at the IZA and a PhD candidate at the Bonn Graduate School of Economics.

My research interests are Behavioral Economics, Organizational Economics, Labour Economics and Public Policy.

Contact Information:

e-mail: radbruch(at)iza.org

address: Schaumburg-Lippe-Straße 5-9, 53113 Bonn, Germany



Do Teams Procrastinate? Strategic Procrastination in a Dynamic Environment (with Sebastian J. Goerg, Sebastian Kube, and Philipp Weinschenk) Experiments in Organizational Economics (Research in Experimental Economics, Volume 19), Sebastian J. Goerg , John R. Hamman (Eds.) Emerald Group Publishing

The effectiveness of incentive schemes in the presence of implicit effort costs (with Sebastian J. Goerg, Sebastian Kube) Management Science (forthcoming)

[earlier version as IZA Discussion Paper No. 10546 (2017)]

Working Papers

The impact of self-selection on performance

(with Lukas Kießling and Sebastian Schaube) IZA Discussion Paper No. 11365 (2018)

Abstract: In many natural environments, carefully chosen peers influence individual behavior. In this paper, we examine how self-selected peers affect performance in contrast to randomly assigned ones. We conduct a field experiment in physical education classes at secondary schools. Students participate in a running task twice: first, the students run alone, then with a peer. Before the second run,we elicit preferences for peers. We experimentally vary the matching in the second run and form pairs either randomly or based on elicited preferences. Self-selected peers improve individual performance by .14-.15 SD relative to randomly assigned peers. While self-selection leads to more social ties and lower performance differences within pairs, this altered peer composition does not explain performance improvements. Rather, we provide evidence that self-selection has a direct effect on performance and provide several markers that the social interaction has changed.

Passive Choices and Cognitive Spillovers

(with Steffen Altmann and Andreas Grunewald) [available upon request]

Abstract: Passive behavior is ubiquitous|even when facing various alternatives to choose from, people fail to take decisions. This paper provides evidence on the cognitive foundations of such "passive choices" and studies the resulting consequences for policies that encourage active decision-making. In an experiment designed to study passive behavior, we document three main results. First, we demonstrate that scarcity of cognitive resources leads to passive behavior by inducing individuals to disregard certain decisions. Second, policies that encourage active choice succeed in reducing passivity and improve decisions in the targeted domain. Third, however, these benefits of choice-promoting policies come at the cost of negative cognitive spillovers to other domains.

Work in Progress

To whom you may compare — Preferences for Peers (with Lukas Kießling and Sebastian Schaube) [available upon request]

Determinants of subjective performance evaluations (with Amelie Schiprowski)

Popular Writing

Radbruch, J., "Alle sind Mitte", DIE ZEIT, 08/2018

Altmann S., Falk A., Heuser U. J., Radbruch J., "Wer zahlen soll" , DIE ZEIT, 09/2018

Both articles are part of a larger project about economic literacy with Altmann S., Falk A. and Heuser U. J.. All articles of the series can be found here and more information about the project can be found here in the briq newsroom.