We designed 3 social behavior experiments involving compensation for real estate expropriation. We recruited 88 students at a university in China as our participants, and investigated the impact of third-party punishment on bilateral cooperation in a laboratory setting. The results showed the heterogeneity of human behavior in the different experiment types. In addition, results showed that the potential impact of punishment became more powerful by adding a third party. Finally, a third party had low punishment costs and a significantly higher probability of actually imposing punishment than did a second party. Results showed that, compared with second-party punishment, third-party punishment is more conducive to the maintenance of bilateral cooperation.

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In the context of corporate environmental investment (EI), this paper designs an experiment on public goods game without punishment and an experiment on that game with third-party punishment (TPP). Then, the influence of IEP and TPP mechanism on corporate EI behaviors was tested in details. The results show that different enterprises vary in IEP and took heterogenous behaviors in the two corporate EI experiments; the introduction of TPP pushed up the environmental resource investment of enterprises and increased the success rate of EI cooperation; IEP and TPP exerted a significantly positive influence on corporate EI behaviors; the introduction of TPP, coupled with the consideration of corporate IEP, can effectively elevate corporate EI and improve the eco-environment.