The Path Of Least Resistance
What desire paths can teach us about the psychology of recycling
By Katie Merriman
Every morning, I walk to university. I have done this same walk so many times now that it is permanently engraved into my subconscious. Come rain or shine, I follow the same paths, cross the same roads and take the same turns.
Along the way, I have come to notice specific features, and they now form landmarks in my journey. One such landmark becomes visible as I cross the road. A zebra crossing encourages me to briefly change direction before rejoining the original footpath I was walking on. But over time it has become clear that many people choose not to follow this design, and instead have worn their own narrow path through the grass, directly towards the next road crossing 100 metres along the path.
This is a ‘desire path’ - a path created out of convenience rather than planning. The British author Robert Macfarlane describes this idea as “paths and tracks made over time by the wishes and feet of walkers, especially those paths that run contrary to design or planning.”
The path reveals something surprisingly simple about human behaviour. When given the choice of a purposefully designed path or a slightly easier route, most people will choose the latter. Even though this option will only save them a few seconds, that is enough.
This preference for convenience extends far beyond my walk to university. From ready meals to next-day delivery, modern life is filled with ways of reducing the time and effort required to do things. Convenience is not an invisible force acting upon our behaviours without us knowing; it has now become something that most people actively seek in their day-to-day lives. In fact, it has become so embedded in everyday life that we rarely stop to think about how much influence it has on our decisions.
But what happens when the most convenient choice conflicts with the choice we believe is right?
Recycling provides a perfect example. Most of us know that recycling is important, yet knowing what we should do does not always determine what we actually do. So what makes us more likely to recycle? How much of the decision happens subconsciously? And, perhaps most importantly, could understanding the psychology behind our behaviour help us design better recycling systems?
The Bin Dilemma
Just imagine for a minute that you are out for lunch with some friends at the park. Each of you has brought a meal deal to enjoy whilst soaking up the sun. Eventually, though, it’s time to leave.
After a quick look at the packaging, you realise that some components of the meal deal can be recycled.
But then you look up and notice that the recycling bin is on the opposite side of the park from where you are sitting.
At first you consider walking over, but your friends are already walking to the nearest park exit. There is a general waste bin a few metres away. Your decision only takes a few seconds: You follow your friends and throw all the rubbish in the general waste bin.
Does this make you an environmentally careless person?
Not necessarily.
You can be someone who recycles diligently at home but also throws rubbish in the general waste when the alternative requires you to go out of your way. This decision doesn't automatically reflect how strongly you care about the environment. Instead, there are a number of psychological forces that can impact your decision-making at this moment.
Convenience is one of them. Social pressures are another. For some people, these decisions are controlled by the way they make them feel, whilst others need external incentives or intentional design to help them along.
Together, these influences can affect our behaviour and turn a small decision into a complex psychological conundrum.
At Your Earliest Convenience
The first of these influences is perhaps the most obvious: convenience. In a fast-moving world, people are incredibly sensitive to the level of effort needed for even the smallest tasks. Given the choice between two actions that result in the same outcome, people will often choose the one which requires less time, effort or movement.
This principle has been demonstrated a number of times in recycling experiments. In a 2021 study, researchers gave 272 students plastic pots after a yoghurt-tasting task. The environment around them gave access to both a recycling bin and a general waste bin. When the general waste bin was moved further away, and therefore made less convenient, the use of the recycling bin roughly tripled.
At first glance, these findings might seem to reveal an element of laziness amongst participants. But in reality, they show how small changes to the environment around us can alter our behaviour. The participants had not suddenly begun to care more about recycling; instead, the amount of effort required to recycle had changed.
This is what psychologists refer to as the ‘value-action gap’. This concept describes the difference between what people say or believe and what they actually do. Even if we intend to act in environmentally conscious ways, that intention has to compete with the effort involved in each action.
However, convenience is not simply a matter of metres. A systematic review of 44 studies found that absolute distance was not the most important factor of a bin's location, but instead it was the location along the natural path. In other words, the recycling bin does not need to be the closest option; it just needs to be the easiest option along a journey someone is already making.
This brings us back to desire paths.
The path through the grass exists because it gives people an easier option along a route they are already walking. The same principle can be applied to recycling. If the choice to recycle requires us to journey off of our existing path, then it is asking us to fight against the natural human instinct for efficiency. But if the recycling bin is placed along our natural route, or right next to the general waste option, our behaviour can change.
Follow The Crowd
Convenience is not the only force at play when we are making decisions. As humans, we are inherently social, which means that the behaviour of others can have just as much of an influence as the physical world around us.
Now, think back to the park and the bin dilemma we discussed earlier. But this time imagine that as you get up to leave, your friends choose to walk to the other side of the park and put their rubbish in the recycling bin. Suddenly, you have a different decision on your hands. Rather than taking you away from your group of friends, the act of recycling now keeps you with them, making it feel more worthwhile. You are no longer making a decision in isolation but instead reacting to a decision already made by others.
Psychologists refer to these unwritten expectations as social norms. The influence of social norms on recycling has also been demonstrated in research. Surveys from a study commissioned by Beyond the Box found that a third of people (33%) are more likely to recycle when they know someone else is watching, whilst 35% said they were more likely to recycle after seeing someone else doing it.
Social norms are typically divided into two types. A descriptive norm tells us what other people are actually doing. If you see your friends or neighbours separating all their rubbish into recycling bins, you learn that recycling is the behaviour people around you tend to follow. On the other hand, an injunctive norm tells us what behaviour people consider to be acceptable or unacceptable. Even when no one is watching, you might hesitate to put recyclable rubbish into the general waste bin because it feels like a violation of the ‘right’/’acceptable’ behaviour.
The influence of social norms can be both a good thing and a bad thing. If everyone around us recycles, it becomes difficult to see it as anything other than the right choice. But if nobody does, the opposite is true. Suddenly, choosing the recycling bin is the unique choice. This suggests that individual behaviour is partly shaped by the behaviour people see around them.
Doing good, feeling good
So far, the decisions we have considered have been influenced by things outside of ourselves. We recycle because the bin is convenient, or because the people around us are doing it. But sometimes the motivation comes from somewhere much closer: how the decision makes us feel.
This is where the ‘warm glow effect’ comes in. This refers to the idea that people often do good deeds not just because they care about the action itself but because they enjoy the feeling it gives them. In terms of recycling, there is usually no immediate benefit to putting a bottle in the recycling bin, but we can still experience a small sense of satisfaction from knowing we’ve made the environmentally conscious choice.
This effect was developed and explored by the economist James Andreoni, who often described the “warm glow” as personal pleasure that comes from “doing good” rather than the actual outcome of the action. This internal reward can be motivation for a number of behaviours, including voting, charitable giving and pro-environmental behaviour such as recycling.
A 2026 study published in the Journal of Environmental Psychology found that pro-environmental behaviours generated positive warm glow feelings, while anticipating the feeling predicted greater environmental effort. Experiencing the warm glow also strengthened people’s intentions to behave environmentally in the future. This creates an interesting feedback loop: do something environmentally positive → feel good about it → become more inclined to do it again.
It is because of influences like this that recycling cannot be reduced to just a calculation of effort. Sometimes people will be willing to put more effort into a behaviour that gives them something in return, in this case a “warm glow”. The question then becomes whether the internal reward is enough to truly motivate behaviour or whether an external reward is more effective.
What’s in it for me?
So, what happens when just feeling good about an action isn't enough? One way to encourage behaviour is to offer something in return. Unlike the warm glow effect, which is completely internal, incentives provide tangible reasons to recycle.
The most common example of an incentive is money. Deposit return schemes (DRS), for instance, offer people money for recycling different types of packaging. This takes the action of recycling from a purely environmental choice to something that comes with a financial reward. This is particularly effective because the reward is immediate and physical, whereas the environmental benefit is often distant and hard to see. In fact, deposit return schemes have been associated with much higher collection rates for the types of containers they cover than systems without the schemes. Many countries in Europe have successfully implemented DRS and now have collection rates higher than 75%, with many reaching >90% according to the waste solutions company Sensoneo.
However, this also raises difficult questions: what happens when the reward disappears? Is it moral to encourage environmental behaviour through financial rewards? If we become accustomed to receiving a reward for recycling, will we start to see the behaviour as worthwhile only when there is something in it for us?
Incentives may encourage or trigger behaviour in the short term, but whether they create lasting changes is another question. This is another example of why multiple motivations contribute to the decision to recycle or not. Convenience can make it easy. Social norms can make it feel like the only acceptable choice. The warm glow effect can make it feel good. And incentives can give us something tangible in return. The combination of these forces can make recycling an easier behaviour to incorporate into everyday life.
Designing better choices
Perhaps the most effective way to influence behaviour is to stop asking people to change and instead change the environment around them. This is where design becomes important. A recycling system can be convenient in theory, but if people cannot see the bin, understand what goes into it or easily access it, the system is still creating friction.
Ellipsis' analysis of more than 7,380 bins across 361 sites provides an insight into just how important these details can be. Bins with poor or no signage recorded 55% lower overall performance and 73% poorer capture of food and drink litter. Damaged bins also captured 20% less litter. Simply providing a bin, therefore, does not guarantee that people will use it.
Location matters too. Bins at bus stops and car parks captured 4-5x more litter than average, suggesting that waste infrastructure is most effective when it is placed where disposal decisions actually happen. In parks, visibility appeared particularly important, with more visible bins able to influence litter over a wider area.
Perhaps the most interesting example is what Ellipsis describes as ‘tidy littering’. On average, 12.48% of litter was found within five metres of a bin. These people have carried their waste almost all the way to its intended destination, yet something has stopped them from completing the final step. The problem, therefore, may not always be a lack of willingness to dispose of waste properly. Sometimes, the system itself creates enough friction to prevent people from finishing the job. When a bin is overflowing, visibly dirty or damaged, people become less likely to use it. In these instances, the perceived responsibility to recycle is transferred from the individual to the authority responsible for maintaining the bins.
This brings together everything we have explored so far. Convenience, social norms, the warm glow and incentives. But none of these influences can work particularly well if the physical environment makes the desired behaviour difficult to understand or carry out.
This brings us back to the desire path. People have repeatedly chosen the route through the grass because it feels natural and requires less effort. The same principle can be applied to recycling. If people naturally seek convenience, follow social norms, and respond to rewards, why design a system that works against these tendencies? The goal should be to make the sustainable choice not just the ‘right’ choice, but the easiest, most obvious and most natural one.
Rather than changing the person, maybe we need to change the path.
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