You are alone at a crosswalk. The pedestrian light is red. The road is empty enough that you can hear the small scrape of your shoe against the curb.
No cars. No police. No one across the street silently judging your civic character.
Crossing would save time. It would harm no one. And still, something in you hesitates.
That tiny pause is more psychologically interesting than it first appears. It suggests that rules can shape behavior even when the usual explanations — punishment, reputation, social pressure — have been stripped away.
The Empty Crosswalk as a Laboratory
In 2025, Nature Human Behaviour published a large study called “Why people follow rules,” led by Lucas Molleman and colleagues. Across four online experiment series with 14,034 English-speaking participants, the researchers tested a deceptively simple question: why do people follow arbitrary rules when breaking them benefits them, harms no one, and remains anonymous?
Their baseline task worked a little like a traffic light. Participants started with 20 money units. Each second they waited reduced what they could earn. Waiting meant following the rule. Leaving early meant breaking it.
The strange part was that breaking the rule helped the participant and hurt nobody else.
Still, between 55% and 70% of participants complied with the costly arbitrary rule while acting alone. Not everyone waited, which matters. The finding is not that humans are mindless rule-followers. It is more precise than that: obedience survived after many obvious motives disappeared.
When sanctions and social consequences were later added, compliance rose to 78%. That makes intuitive sense. Watchers, fines, and judgment all make obedience easier to explain. But the study’s puzzle is that obedience was already there before those forces arrived.
CRISP: Four Reasons Rules Pull on Us
To explain this, Molleman and colleagues proposed a framework called CRISP: conformity through respect, incentives, social expectations, and preferences.
The familiar piece is incentives. We follow rules because consequences matter. Fines, rewards, promotions, penalties, and social costs all shape behavior. If a workplace rule keeps failing, the first question is often whether the reward structure quietly encourages people to ignore it.
But incentives alone do not explain the empty crosswalk.
The more curious force is respect. In the CRISP framework, respect means the rule has weight because it is a rule. Not because it is useful in the moment. Not because someone is watching. Simply because it carries legitimacy.
You can feel this in small places: a rope barrier you could easily step over, an empty waiting room, a formality everyone knows is inefficient. Some part of the mind may not ask, “Will I be caught?” It asks, “Am I allowed?”
Then there are social expectations. These are not only about what other people actually see. They are about what we imagine decent people are supposed to do. The empty crosswalk becomes populated by internal witnesses: parents, teachers, neighbors, and some idealized version of ourselves.
Finally, there are social preferences. Sometimes we obey because other people’s welfare matters to us. We keep quiet at night, return borrowed things, and wipe down the machine at the gym because unseen people are affected.
The 2025 study separated this prosocial motive from pure rule respect because, in the core task, anonymous rule-breaking harmed no one.
When Rules Become Psychological Gravity
One of the most revealing details came from a summary of the research noting that seeing others break the rule lowered compliance somewhat, but most participants still obeyed.
That is the tender, unsettling part. Even when someone demonstrates that the rule can be broken, the rule does not instantly lose its force.
This is social norms psychology at its most ordinary. A rule can become moralized after its original reason fades. The office microwave instruction no one remembers creating. The queueing ritual that continues even when the system has changed. The form that must be signed because it has always been signed.
Rules can act like compressed social memory. Someone, somewhere, learned a pattern and turned it into an instruction. We inherit the instruction without always reopening the evidence inside it.
That is often useful. A society where nobody internalizes rules becomes exhausting. Every doorway needs a guard. Every promise needs a contract. Every curb needs a camera.
But the opposite problem is real too. A society where rules are too easily internalized becomes brittle. People endure pointless procedures because disobedience feels heavier than inconvenience.
The study has limits, as all studies do. These were minimalist online tasks, not the full emotional complexity of families, schools, governments, culture, and power. Participants brought entire lives of classrooms, traffic lights, airport lines, and childhood instructions into the experiment.
Still, that is partly what makes the finding so interesting. Even in a stripped-down environment, rule-following remained common.
Common, not universal. That phrase leaves room for personality, culture, fatigue, context, and the private courage of shrugging.
The Question Beneath Obedience
The useful question is not “Should I obey rules?” It is more careful: which force is asking for my obedience right now?
Is it fear of punishment? Concern for someone unseen? Respect for a legitimate system? A desire to meet imagined expectations? Or just the echo of a rule whose reason has gone missing?
Naming the CRISP force can separate conscience from habit.
That does not mean every red light should be ignored or every procedure challenged. Many rules are shortcuts for trust. They save us from renegotiating every tiny social encounter from scratch.
But compliance is not proof that a rule is good. It only proves that the rule has gravity.
The next time you wait at an empty crosswalk, do not rush to call yourself timid or virtuous. Notice the competing selves: the practical self seeing the empty road, the social self feeling the rule, and the reflective self watching both.
The question is not whether you should always cross or always wait. It is whether you can hear the reason beneath the rule.
Because once you hear it, obedience becomes less automatic. It becomes something more human: a choice you can examine before the light changes.
