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Closing the Loop in Minimally Supervised Human-Robot Interaction: Formative and Summative Feedback

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Mohan,  Mayumi
Dept. Haptic Intelligence, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Nunez,  Cara M.
Dept. Haptic Intelligence, Max Planck Institute for Intelligent Systems, Max Planck Society;
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Kuchenbecker,  Katherine J.       
Dept. Haptic Intelligence, Max Planck Institute for Intelligent Systems, Max Planck Society;

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Citation

Mohan, M., Nunez, C. M., & Kuchenbecker, K. J. (2024). Closing the Loop in Minimally Supervised Human-Robot Interaction: Formative and Summative Feedback. Scientific Reports, 14: 10564. doi:10.1038/s41598-024-60905-x.


Cite as: https://hdl.handle.net/21.11116/0000-0010-79D0-B
Abstract
Human instructors fluidly communicate with hand gestures, head and body movements, and facial expressions, but robots rarely leverage these complementary cues. A minimally supervised social robot with such skills could help people exercise and learn new activities. Thus, we investigated how nonverbal feedback from a humanoid robot affects human behavior. Inspired by the education literature, we evaluated formative feedback (real-time corrections) and summative feedback (post-task scores) for three distinct tasks: positioning in the room, mimicking the robot's arm pose, and contacting the robot's hands. Twenty-eight adults completed seventy-five 30-second-long trials with no explicit instructions or experimenter help. Motion-capture data analysis shows that both formative and summative feedback from the robot significantly aided user performance. Additionally, formative feedback improved task understanding. These results show the power of nonverbal cues based on human movement and the utility of viewing feedback through formative and summative lenses.