多代理人网络中信任与可信度的实验研究

Experimental study of trust and trustworthiness in multi-agent network

在经典的1位委托人对1位代理人的信任博弈实验的基础上设计了一位委托人对两位代理人的信任博弈实验,以观察存在多位代理人时委托人和代理人之间的信任水平和可信度.通过与经典单代理人信任博弈实验对比,发现多代理人信任实验中的委托人在面对2位陌生代理人的时候表现出更高的信任水平,并且委托人倾向于在2位代理人之间平均分配投资总额.回归分析结果表明委托代理关系网络结构的确对委托人的信任水平有显著影响,另外,委托人的风险偏好和成长环境等因素也对其信任水平产生显著影响.总之,尽管不同网络结构中代理人的可信度之间并没有明显差异,社会整体的效率在多代理人情境下得到显著提升.

A three-node trust experiment which contains one principle and two agents is designed on the basis of the BDM trust game. Experimental results reveal that principals send more to agents in the three-node trust game than in the two-node trust game, and the amount sent to both agents are equal in order to diversify risk. Besides the game structure, the principals＇ risk preference and the family environment also have a significant influence on trust behavior. After all, the total efficiency of the three-node trust game is higher than that of the two-node one, though the trustworthiness of the receivers in both two structures is almost the same.