The seeds of success: the pivotal role of first round cooperation in public goods games

Mehmet Y. Gürdal1, Orhan Torul1, Mustafa Yahşi2
1Department of Economics , Boğaziçi University , Istanbul , Turkey
2Department of Economics, Koç University, Istanbul, TURKEY

Tóm tắt

This paper examines cooperation and punishment in a public goods game in Istanbul. Unlike prior within-subject designs, we use a between-subject design with separate no-punishment and punishment conditions. This approach reveals that punishment significantly increases contributions, demonstrating the detrimental effect of having prior experience without sanctions. We highlight two critical factors—heterogeneous initial contributions across groups and how subjects update their contributions based on prior contributions and received punishment. An agent-based model verifies that the interaction between these two factors leads to a strong persistence of contributions over time. Analysis of related data from comparable cities shows similar patterns, suggesting our findings likely generalize if using a between-subject design. We conclude that overlooking within-group heterogeneity biases cross-society comparisons and subsequent policy implications.

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