Future counsellor robots could comfort humans with a simple pat on the hand
Do you think that a robot could be persuasive in any way? You might, after it gives you a comforting pat on the hand. At least, that’s the finding of an intriguing new study that looked at how an android’s physical touch can impact humans.
In the study, which was carried out by researchers from Germany’s University of Duisburg-Essen, 48 students engaged in a one-on-one school counselling conversation with a humanoid robot (Softbank Robotics’ NAO). While the robot simply moved its hand towards some of the participants (the control group), for others it physically patted their hand three times in a ‘touch-release’ action. Interestingly, the scientists noted that while the majority of participants smiled and even laughed at this movement – particularly if performed at the end of the conversation – none of them pulled away from the robot.
Compared to the control group, the touched students reported higher levels of emotional wellbeing (as measured by a post-experiment questionnaire). They also showed more interest in a specific academic course suggested by the robot during the conversation.
Students who were patted were more likely to give the robot a marginally higher score for physical attractiveness (although these participants still only rated poor NOA a 2.5 out of 5 on average).
“A robot’s non-functional touch matters to humans. Slightly tapping human participants’ hands during a conversation resulted in better feelings and more compliance to the request of a humanoid robot,” said the paper’s authors Dr Laura Hoffmann and Prof Nicole Krämer.
“It is furthermore remarkable that simply tapping the back of participants’ hands showed such an effect. Involving more complex and prolonged touching from a robot might increase engagement and compliance.”
As the researchers argue, this small study – one of the first to examine the impact of robot-initiated touch – suggests that through the use of comforting touches, robot counsellors could better persuade patients to engage in healthy activities such as exercise.
However, they caution that much about human-robot interactions are complex, with still more to be learned about the difference between human and robot touch.
People aged 55 to 75 who used the internet more over lockdown, particularly for staying in touch with friends and family, were at lower risk of depression and reported a higher quality of life, a study carried out at the University of Surrey has found.