Comparison of Rating Scale and Pairwise Comparison Methods for Measuring Human Co-worker Subjective Impression of Robot during Physical Human-Robot Collaboration

Publisher:
IEEE
Publication Type:
Conference Proceeding
Citation:
2024 IEEE International Conference on Robotics and Automation (ICRA), 2024, 00, pp. 907-913
Issue Date:
2024-01-01
Full metadata record
The Rating Scale method has been long deemed the standard for measuring subjective perceptions However in the field of physical human robot collaboration pHRC its aptness should be put under scrutiny due to inherent challenges such as response bias between subject variations and the granularity nature Individual variances can introduce significant bias in the rating scale results A high granularity in the scale could overwhelm participants leading to unclear and biased responses while a low granularity may gloss over the fine nuances of human feelings Additionally there s a notable risk of receiving careless responses which compromise data reliability Recognizing these challenges this paper proposes the application of Pairwise Comparison PC in pHRC an alternative survey technique that emphasizes direct comparisons between items on the defined criteria By using the NASA Task Load Index NASA TLX as a template RS and PC questionnaires are designed and used in a series of pHRC experiments Our preliminary findings suggest that PC is more precise and robust than the rating scale method Compared to RS PC fosters authentic participant interests in the experiment by intuitive question design and reducing the experimental duration Besides the accuracy and reliability of PC are also found to be consistent regardless of the variations in our experimental procedure design
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