Abstract—Several HRI studies have investigated the use ofinteractive social robots to enhance a variety of activitiesdesigned for children in recent years. Notably, these robots haveshown the ability to facilitate greater engagement withrehabilitative therapy exercises. Yet, very few studies havedirectly compared the performance of a robotic therapist withthat of a human therapist during therapy sessions. This type ofanalysis is even less common for studies involving children. Thiswork presents the experimental results of a between-subjectsthe study conducted with 10 children who interacted with either arobot or a human therapist while playing a virtual realityrehabilitation game. The results are analyzed in terms of userintrinsic motivation and compared to previous work with adultparticipants. Preliminary results show a trend that childrenenjoyed working with the robot therapist more than the humantherapist while playing the game. This finding is consistent withrelated work within the domain of child-robot interaction andsupports the continued investigation of the potential uses of socialrobots in therapeutic rehabilitation protocols for children.Keywords—rehabilitation robotics; assistive technology; roboticplaymate; social robot; child-robot interaction