Increasing anthropomorphic robot behavioral design could affect trust and cooperation positively. However, studies have shown contradicting results and suggest a task-dependent relationship between robots that display emotions and trust. Therefore, this study analyzes the effect of robots that display human-like emotions on trust, cooperation, and participants' emotions. In the between-group study, participants play the coin entrustment game with an emotional and a non-emotional robot. The results show that the robot that displays emotions induces more anxiety than the neutral robot. Accordingly, the participants trust the emotional robot less and are less likely to cooperate. Furthermore, the perceived intelligence of a robot increases trust, while a desire to outcompete the robot can reduce trust and cooperation. Thus, the design of robots expressing emotions should be task dependent to avoid adverse effects that reduce trust and cooperation.

翻译：抽象：增加拟人化机器人的行为设计可能会对信任与合作产生积极影响。然而，已有研究显示出矛盾的结果，并表明能够表达情感的机器人与信任之间存在任务依赖关系。因此，本研究分析了能够展现人类情感的机器人对信任、合作以及参与者情绪的影响。在一项分组研究中，参与者与一个情感型机器人和一个非情感型机器人进行硬币委托游戏。结果表明，与中性机器人相比，表达情感的机器人引发了更多的焦虑情绪。相应地，参与者对情感型机器人的信任度较低，且合作意愿降低。此外，机器人的感知智能会增加信任，而超越机器人的竞争欲望则会降低信任与合作。因此，表达情感的机器人设计应依赖于具体任务，以避免产生降低信任与合作的负面影响。