4.4 Article

Body Form Modulates the Prediction of Human and Artificial Behaviour from Gaze Observation

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SPRINGER
DOI: 10.1007/s12369-022-00962-2

Keywords

Gaze perception; Body perception; Action prediction; Human-robot interaction; Mentalising

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The future of human-robot collaboration depends on people's understanding and prediction of robots' actions. The appearance of robots and contextual information may influence people's ability to anticipate robot behavior. Our research investigated how spatial cues and task instructions modulate people's ability to understand robot actions. The findings suggest that biasing attention towards objects that a robot can interact with can improve people's understanding of humanoid robot behavior.
The future of human-robot collaboration relies on people's ability to understand and predict robots' actions. The machine-like appearance of robots, as well as contextual information, may influence people's ability to anticipate the behaviour of robots. We conducted six separate experiments to investigate how spatial cues and task instructions modulate people's ability to understand what a robot is doing. Participants observed goal-directed and non-goal directed gaze shifts made by human and robot agents, as well as directional cues displayed by a triangle. We report that biasing an observer's attention, by showing just one object an agent can interact with, can improve people's ability to understand what humanoid robots will do. Crucially, this cue had no impact on people's ability to predict the upcoming behaviour of the triangle. Moreover, task instructions that focus on the visual and motor consequences of the observed gaze were found to influence mentalising abilities. We suggest that the human-like shape of an agent and its physical capabilities facilitate the prediction of an upcoming action. The reported findings expand current models of gaze perception and may have important implications for human-human and human-robot collaboration.

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