As empathy is important for the emotional interaction between a human and a robot, the design factors which induce human empathy toward robots need to be explored. Human empathy toward a robot can be affected by the presence of a robot. Thus, we focused on the levels of agency and the physical embodiment of a robot, which are influential factors pertaining to social presence, by executing two experiments. In the first experiment, in a 2 (levels of agency: mediated vs. simulated) between-participants experiment, participants interacted with either a mediated robot which delivers the emotional state of a remote user or a simulated robot which expresses its own emotion. Participants empathized more with the mediated robot than with the simulated robot, demonstrating that the proper form of an emotional robot is as a mediator during emotional interaction between people. In the second study, in a 2 (physical embodiment: physically embodied vs. physically disembodied) between-participants experiment design, participants interacted with either a physically embodied robot or a physically disembodied robot. The results showed that participants empathized more with a physically embodied robot than with a physically disembodied robot, indicating the impact of physical embodiment on human empathy. Implications for the design of human-robot interactions are discussed.

In this paper, we explore the possibility of using animal robot for teaching social behaviors, especially caregiving behavior to children with Autistic Spectrum Disorders (ASD) and Pervasive Development Disorder (PDD).