Humans Naturally Prefer Walking Anticlockwise, Study Reveals
New research indicates a subconscious human tendency to drift counterclockwise when moving in public spaces. Scientists observed this bias in diverse settings and cultures, though the exact cause remains elusive.
Scientists have discovered a pervasive subconscious bias in humans to naturally favor walking in an anticlockwise direction, a tendency observed across various environments and cultures. The finding, which emerged from pandemic-era crowd studies at the University of Navarra in Spain, suggests that when individuals or groups navigate spaces like museums, supermarkets, or even empty rooms, they are significantly more likely to drift to the left.
Dr. Iñaki Echeverría Huarte, a researcher at the University of Navarra, noted the surprising consistency of this behavior. "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," he stated. What began as an observation during experiments designed to maintain safe distancing during the COVID-19 pandemic quickly evolved into a dedicated research project.
During the initial pandemic studies, researchers noticed a distinct pattern in video footage: crowds overwhelmingly moved in a counterclockwise direction. This unexpected observation prompted a series of more focused experiments. In these trials, both individuals and small groups were asked to move around enclosed spaces. Repeatedly, the researchers documented the persistent anticlockwise walking preference. To investigate whether cultural norms influenced this behavior, the team collaborated with Dr. Claudio Feliciani from the University of Tokyo, who confirmed the same results in Japan.
Understanding the Bias: Biomechanics or Something More?
The research team meticulously accounted for factors such as right-handedness, right-footedness, and right-eye dominance, finding that the bias persisted regardless of these individual predispositions. Interestingly, a more pronounced anticlockwise leaning was observed in children compared to adults. Dr. Echeverría Huarte theorized, "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."
While the exact origin of this subtle yet pervasive directional preference remains unclear, researchers are exploring various hypotheses. Further experiments using virtual reality and scenarios where participants mimicked a leg injury are underway in hopes of uncovering the underlying mechanisms. Some team members humorously speculated about the Coriolis effect, influenced by Earth's rotation, or a reversed trend in Australia, but these were dismissed as unlikely by the lead scientists.
Dr. Feliciani emphasized the potential significance of understanding this bias: "We don’t know why it happens, but we think that by understanding the reasons, we could better understand how we perceive the world. It can help us make other discoveries which may be more important than this one." This research could have practical applications, enhancing the realism of crowd simulation models and informing the design of public spaces to better accommodate pedestrian flow, according to Dr. Echeverría Huarte.
This tendency is not unique to humans. Studies on rock ants in Bristol have shown a similar left-turn bias when exploring new nests. The prevailing hypothesis points toward biomechanics, suggesting that human asymmetry plays a role. "None of us is perfectly symmetrical, and the way each person’s brain gathers sensory information and coordinates it with the muscles seems to tip them gently to one side," explained Dr. Echeverría Huarte. He admitted, "We have tested several ideas and the bias stubbornly keeps showing up, so the exact mechanism is still an open question."
The implications extend beyond casual ambulation. Historically, the direction of athletic track races provides a fascinating parallel. In the first modern Olympics in 1896, athletes ran clockwise. However, this was reversed by 1913 after a majority of athletes found the direction unnatural. Running anticlockwise is now standard in the Laws of Athletics. Professor Gareth Irwin, head of sport and exercise biomechanics at Cardiff Metropolitan University, suggests this might stem from the population's right-leg dominance. "Running around the bend in an anticlockwise direction puts more internal force on the right side of the body," he commented. He further posited that this preference might be less about pure biomechanics and more about the social dominance associated with right-sidedness, which influences everything from supermarket design to how companies aim to direct consumer movement.