#6056. The Exploration of the Uncanny Valley from the Viewpoint of the Robot’s Nonverbal Behaviour

July 2026publication date
Proposal available till 29-05-2025
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Journal’s subject area:
Philosophy;
Social Psychology;
Computer Science (all);
Electrical and Electronic Engineering;
Control and Systems Engineering;
Human-Computer Interaction;
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Abstract:
Many studies have been conducted to find approaches to overcome the Uncanny Valley. However, the focus on the influence of the robot’s appearance leaves a big missing part: the influence of the robot’s nonverbal behaviour. This impedes the complete exploration of the Uncanny Valley. In this study, we explored the Uncanny Valley from the viewpoint of the robot’s nonverbal behaviour in regard to the Uncanny Valley hypothesis. We observed a relationship between the participants’ ratings on human-likeness of the robot’s nonverbal behavior and affinity toward the robot’s nonverbal behavior, and define the point where the affinity toward the robot’s nonverbal behavior significantly drops down as the Uncanny Valley. In this study, an experiment of human–robot interaction was conducted. The participants were asked to interact with a robot with different nonverbal behaviours, ranging from 0 (no nonverbal behavior, speaking only) to 3 (gaze, head nodding, and gestures) combinations and to rate the perceived human-likeness and affinity toward the robot’s nonverbal behavior by using a questionnaire. Additionally, the participants’ fixation duration was measured during the experiment.
Keywords:
Affinity; Fixation duration; Human-likeness; Robot’s nonverbal behaviours; Uncanny Valley

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