Humans Prefer To Walk Anticlockwise, Scientists Find

fjo3 shares a report from The Guardian: Tests reveal that when people are ambling about, they have a natural tendency to turn to the left and walk in an anticlockwise direction. "If you simply ask someone to start walking, whether they are wandering around a museum, a supermarket, or even an empty room, it is surprisingly likely that they will drift counterclockwise," said Dr Inaki Echeverria Huarte at University of Navarra in Spain. As with many critical discoveries in science, the revelation owes a debt to serendipity. During the pandemic, the researchers ran experiments to see how many people could share a space while keeping a safe distance. On reviewing the video, they noticed that crowds overwhelmingly walked in an anticlockwise direction. The surprise set in motion an entire research project. The scientists conducted a series of experiments in which individual pedestrians or small crowds roamed around enclosed spaces. Time and again, the researchers observed the tendency to walk in an anticlockwise direction. Suspecting that cultural norms might play a role, the team joined forces with Dr Claudio Feliciani at the University of Tokyo. He found the same results in Japan. The finding held when the researchers accounted for people being right-handed, right-footed and right-eye dominant, and was seen in both male and female walkers. The only difference they spotted was a more pronounced bias in children. "Each of us carries a small personal bias to turn slightly to one side, and when many people share a space, those tiny biases add up into a net counterclockwise rotation," said Echeverria Huarte. Researchers think the tendency may be tied to biomechanics: people are not perfectly symmetrical, and the way the brain processes sensory information and coordinates muscles may gently tip walkers toward one side. Right-side dominance may also play a role, especially in running, where anticlockwise movement puts more internal force on the right side of the body and may feel more natural to right-leg-dominant athletes. "We have tested several ideas and the bias stubbornly keeps showing up, so the exact mechanism is still an open question," said Echeverria Huarte. The findings have been published in Nature Communications. Read more of this story at Slashdot.