Psychological impact on human when a robot makes mistakes

In this paper, we develop a robot that sometimes makes mistakes and investigate its impact on users´ mind. Recently, many robots to help people´s daily life have been developed. Although many researchers and system designers aim to develop perfect robots to help people in daily life, such robots make users live a reactive life. On the other hand, some researchers developed robots that depend on users. The robots require users´ assists to do their tasks and users become active due to its dependence like children. By the way, children not only require people´s assists to do their tasks but also make some mistakes. In spite of their mistakes, people come to like children. Based on the idea from these types of interaction, we expect that users may have positive impression on the robot and we can realize continuous interaction when the robots not only need users´ assists, but also make mistakes. To investigate our hypothesis, we developed a robot that sometimes makes mistakes. Throughout the experiments, users have more positive impression on the imperfect robot than the perfect robot when the robot behaves adequately after making mistakes.