Robots were traditionally designed to operate independently for human, often performing tasks in hazardous environments. Recently, a new range of application domains such as taking care of old people and helping them, are driving the development of robots that can interact and cooperate with humans. Most of research in field of these so called humanoid robots concentrates on questions such as how to design the robot as similar as possible to a human regarding it outer appearance as well as its communicative behavior. In contrast, the present study concentrates on human attitude and communicative strategies. Several questions regarding the social aspects of human-robot communication and the human-like style of the robot’s speech still remain unresolved.
Does the communication strategy influence the success of the human robot communication? How does the communication with a robot resemble the communication with another human? And how are these aspects related to subjective and objective success of the communication?
A specific challenge in human-robot interaction concerns the evaluation of communicative success. Here, different evaluation methodologies using a reference answer to the most prominent approach for evaluations called Paradise. In the present study, objective measures were calculated from the participant responses and success measures were assessed after each block in form of a survey to get a deeper insight in the relationship between subjective and objective measures of success.
To concentrate on dialogue problems of the robot, we use a text based interface, because the present investigation was concerned with communicative strategies and task success. We are aware of the fact that the findings can not be directly applied to spoken communication with the real robot.
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