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Published online by Cambridge University Press: 14 March 2025
We report results from standard minimum-effort experiments conducted in Copenhagen (Denmark). Our subjects frequently coordinate on the Pareto-efficient equilibrium even in groups of six. This is in stark contrast to the previous literature, as we show in a detailed analysis of experiments which had the same design but were held in different countries. The subject-pool effect is substantiated by the finding that, the higher the share of Danish subjects in a group, the higher the minimum-effort levels. These findings suggest that the prevalent coordination failures previously observed are affected by significant subject-pool effects.
Dirk Engelmann is also an Affiliate of the Center for Experimental Economics at the University of Copenhagen and a Senior Researcher at the Economics Institute of the Academy of Sciences of the Czech Republic, v.v.i.
Hans-Theo Normann is also a Senior Research Fellow at the Max-Planck Institute for Research on Collective Goods and a fellow at ENCORE.
Electronic supplementary material The online version of this article (doi: 10.1007/s10683-010-9239-3) contains supplementary material, which is available to authorized users.