Under the assumption of rational people and limited common pool resources, individuals will extract as many common pool resources as possible in order to maximize their interests. Marine resources are typical common pool resources. As the number of marine catches increases year by year, the marine environment has been severely damaged. In order to protect marine biological resources and reduce the occurrence of excessive extraction, this paper employs the method of experimental economics to study the individual's extraction behavior of common pool resources by setting up a two-stage experiment in the selection of resources entering the common pool and the number of resources extracted. We also introduce two important factors, information and risk, in the experiment, and study the individual's common pool resource extraction behavior in the face of various risk changes. The experimental results show that the process of information disclosure and risk changes will affect the selection of individual resources and the number of resources extracted to a certain extent. The conclusion can provide policy enlightenment for public governance. For example, disclosing the information on the number of resource extractions can help individuals adjust the number of resource extractions, and formulating corresponding resource management policies according to weather changes can prevent individuals from misjudging risks and leading to irrational extraction behaviors.

With the changes in consumption views and the convenience of credit payments, the phenomenon of excessive borrowing has become more and more prominent, and people's non-optimal decisions when repaying multiple debts have exacerbated the emergence of bad credit. This study focuses on the irrational behavior of repaying credit cards with lower debts in preference to credit cards with lower interest rates during the credit card repayment process, and tries to explore the mechanism of this behavior and intervention measures. We use laboratory experiments to examine individuals' repayment decisions in the face of different goals forms, and introduce social norms and external incentives to study the effect of these interventions on the individual repayment decisionmaking process. The experimental results show that people will choose credit cards with high interest rates and low debt to repay; we can intervene irrational repayment behavior through different goals forms and information.