The Positive Effect of Negative Feedback in HRI Using a Facial Expression Robot

This research explores the use of facial expressions in robots and their effect in collaborative tasks between humans and robots. The positive effect is determined during a task in human - robot collaboration, derived from a negative facial expression issued as feedback by the robot (sad face) when a failure in the execution of the task occurs. This study analyzes whether or not human intervention exists on the initial presence of an unexpected failure, the response time of the intervention and the accuracy of the task. A comparison with a neutral facial expression is also performed.