NDLI: Towards an Affect Space for robots to display emotional body language

Content Provider	IEEE Xplore Digital Library
Author	Beck, A. Cañamero, L. Bard, K.A.
Copyright Year	2010
Description	Author affiliation: Adaptive Systems Research Group, School of Computer Science & STRI, University of Hertfordshire, College Lane, Herts, AL10 9AB, UK (Beck, A.; Cañamero, L.) \|\| Centre for the Study of Emotion, Department of Psychology, University of Portsmouth, PO1 2DY, UK (Bard, K.A.)
Abstract	In order for robots to be socially accepted and generate empathy it is necessary that they display rich emotions. For robots such as Nao, body language is the best medium available given their inability to convey facial expressions. Displaying emotional body language that can be interpreted whilst interacting with the robot should significantly improve its sociability. This research investigates the creation of an Affect Space for the generation of emotional body language to be displayed by robots. To create an Affect Space for body language, one has to establish the contribution of the different positions of the joints to the emotional expression. The experiment reported in this paper investigated the effect of varying a robot's head position on the interpretation, Valence, Arousal and Stance of emotional key poses. It was found that participants were better than chance level in interpreting the key poses. This finding confirms that body language is an appropriate medium for robot to express emotions. Moreover, the results of this study support the conclusion that Head Position is an important body posture variable. Head Position up increased correct identification for some emotion displays (pride, happiness, and excitement), whereas Head Position down increased correct identification for other displays (anger, sadness). Fear, however, was identified well regardless of Head Position. Head up was always evaluated as more highly Aroused than Head straight or down. Evaluations of Valence (degree of negativity to positivity) and Stance (degree to which the robot was aversive to approaching), however, depended on both Head Position and the emotion displayed. The effects of varying this single body posture variable were complex.
Starting Page	464
Ending Page	469
File Size	1221144
Page Count	6
File Format	PDF
ISBN	9781424479917
ISSN	19449445
e-ISBN	9781424479900
DOI	10.1109/ROMAN.2010.5598649
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-13
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Robots Head Joints Analysis of variance Atmospheric measurements Particle measurements Position measurement
Content Type	Text
Resource Type	Article

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