The robot called ERWIN (Emotional Robot with Intelligent Network) is the brainchild of Dr John Murray, from the School of Computer Science, University of Lincoln, UK.

It is now being used as part of a study to find out how some of the human-like thought biases in robot characteristics affect the human-robot relationship.

It is hoped the research will not only help scientists to understand and develop better, more realistic relationships between humans and 'companion' robots, but that it could also help to inform how relationships are formed by children with autism, Asperger syndrome or attachment disorder.

"Cognitive biases make humans what they are, fashioning characteristics and personality, complete with errors and imperfections. Therefore, introducing cognitive biases in a robot's characteristics makes the robot imperfect by nature but also more human-like," said PhD student Mriganka Biswas.

"Based on human interactions and relationships, we will introduce 'characteristics' and 'personalities' to the robot. If we can explain how human-to-human long-term relationships begin and develop then it would be easier to plan the human-robot relationship," said Biswas.

When two people interact for the first time, if the two different personalities attract each other, a relationship forms.

But in the case of conventional human-robot interaction, after gathering information about the robot, the robot's lack of identifiable characteristics and personality prevents any relationship bond developing.

ERWIN has the ability to express five basic emotions while interacting with a human.

"Robots are increasingly being used in different fields such as rescuing people from debris, in medical surgeries, elderly support and as an aid for people who have autism," Biswas said.

Scientists will be collecting data from the robot's interactions with humans, while also employing a 3D-printed humanoid robot and Keepon - a small yellow robot designed to study social development by interacting with children.

Its simple appearance and behaviour are intended to help children, particularly, those with developmental disorders such as autism, to understand its attentive and emotive actions.

(Agencies)

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