ITHACA, N.Y. — Cornell University researchers are using technology, in the form of a mirror-equipped robot, to help bring people together.
Members of the Architectural Robotics Lab, led by Keith Evan Green , built a 4-foot-tall robot — dubbed MirrorBot — with dual mirrors that, when placed in front of a pair of strangers, lets each participant see themself in one mirror and the other person in the other.
In a study involving participants in a waiting-room setting, MirrorBot spurred conversations, playful exchanges and other interactions between strangers. The findings suggest that robots can act not only as conversational partners, but also as spatial mediators.
"We weren't just trying to trigger conversations, but to support the very first moment of social connection, which is the eye contact," said Serena Guo, lead author of the paper .
"What have the most popular forms of computing done? Mostly pulled people apart, through social media, and contributed to a lot of mental health issues," Green said. "And so we thought, maybe we can use computational things to bring people together."
"I became interested in our everyday environments — everyday moments between strangers — when people are physically close but socially disconnected," said Guo. "We saw a lot of the scenarios in waiting rooms, in public parks and other shared environments, where everyone is on their phone. People may be physically together, but socially apart."
For their experiment, Guo and the research team recruited 32 individuals, ages 18 to 50, and told them they were participants in an experiment involving a short-term memory task (they were later told the true nature of the experiment). Pairs were ushered into a waiting room, with three chairs along one wall of the approximately 12-by-12-foot space.
After a few moments, MirrorBot appeared from behind a screen, teleoperated by Guo, who controlled the robot's movement and selected from pre-programmed mirror positions until each participant could see reflections of both themself and the other person.
MirrorBot — purposefully small and covered in soft material, so as not to intimidate — elicited a range of behaviors, with 12 of the 16 groups reporting that the first meaningful contact with the other person was through the mirrors and not face-to-face. Some pairs tried to mutually make sense of the robot, others engaged with it, and some used the mirrors as a way to cautiously gauge the receptiveness of the other person.
Guo said that for a related paper, she and her collaborators tested other devices — a robot without mirrors, a wall-mounted mirror, and no device at all — to see how interpersonal connections might develop. With a larger participant pool (40 pairs of individuals), they found that MirrorBot was most effective because of the eye contact it facilitated.
They also wondered if any object could serve as an icebreaker.
"Unusual or novel objects can make people talk," Guo said, "but people often end up talking about the object itself, rather than becoming curious about each other. We feel MirrorBot is different, because the focus is not on the robot — it's on the other human."
Green, Guo and the team will present the related paper at the Association for Computing Machinery Conference on Human Factors in Computing Systems (CHI '26), April 13-17 in Barcelona, Spain.
