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Author:
Simon Baghomian
Category:
Article · Behavioural design
Date:
9 October 2026
Read:
7 min

Loss aversion, used honestly

A drop of water falling from a chrome tap against a brick wall

People feel a loss more sharply than an equal gain. Used badly, that becomes pressure. Used honestly, it shows someone a cost they are already paying.

In this article

Losing something hurts more than gaining the same thing pleases. It is one of the most familiar findings in behavioural science, and most marketing ignores it. It leads with the upside, the growth, the opportunity, and says nothing about what the reader is losing right now by doing nothing.

That is a missed trick, and an easy one to misuse. Loss aversion done badly is just fear: manufactured urgency, invented scarcity, the countdown timer. It works once and corrodes trust. Done honestly, it simply makes a real cost visible, the one people are already paying but have not named.

What loss aversion is, in plain terms

Imagine finding £50 in a coat pocket, then losing £50 on the way home. Most people feel the loss more sharply than they enjoy the find. Daniel Kahneman and Amos Tversky built this into prospect theory in 1979, and in 1992 they put a number on it.

  • 2.25 timesthe weight a loss carried against a gain of the same size, the median estimate from a small study of choices between gambles for moneyTversky and Kahneman, Journal of Risk and Uncertainty, 1992

That is where the familiar "about twice as much" comes from. Treat it as a rule of thumb, not a law. The effect varies with the stakes and the person, and some researchers, among them David Gal and Derek Rucker in a 2018 paper in the Journal of Consumer Psychology, argue it is far less universal than its reputation. The useful part holds: a possible loss tends to get more attention than an equal gain.

Its close relative matters just as much. People tend to stay with what they have, because changing means giving something up. Behavioural scientists call this status quo bias. Together they explain why "here is what you could gain" so often lands softly, and why doing nothing is the real competitor in so many decisions.

The dishonest version, and why it backfires

Most of us have met loss aversion used badly. The timer that restarts when you reload the page. "Only two left" on something that never runs out. The offer that ends at midnight, every midnight.

These work on a few people, once. Then the reader notices, and everything you send after that is read with suspicion. For anyone who wants a customer, a donor or a candidate to come back, that is a bad trade.

The alternative to pressure is usually presence. When we interviewed the intermediaries who recommend and buy HCML's corporate health services, they told us they want to hear from a provider all year round rather than be bombarded. That shaped a year of content built on ethical, behavioural nudges, not bursts of urgency. See the HCML work.

The honest version reveals a loss

The honest version does not threaten a loss. It shows one. The enquiries quietly leaking through a confusing website. The pitches lost to a competitor who explains themselves more clearly. The good people who never apply because the brand does not speak to them. Putting a number or a name to costs like these moves a cautious buyer more than any amount of upside, because the loss is already happening and now they can see it.

Don't invent a loss to create fear. Reveal the one they're already paying and haven't noticed.

Staffline shows what that looks like. The UK's largest provider of blue-collar recruitment was finding it increasingly hard to source candidates. Our analysis found why: its job adverts were barely optimised for search, and its job search was flawed and cumbersome, so candidates struggled first to find the jobs and then to apply. Nobody needed a deadline. The cost was already being paid, in people who wanted the work and could not get to it. With that in plain view, a total overhaul of the site and its technology was agreed.

A montage of Staffline's social campaign photos: workers in hi-vis in the fields, a food production line, and staff holding up Instagram frames
Social campaign photos from the content we created for Staffline's launch: workers in the fields and on a food production line. See the Staffline work

Their consultative approach unveiled to us a multitude of improvements we could make to our digital strategy.

Mark Underwood, Managing Director, Staffline Recruitment

Side by side, the two versions are easy to tell apart.

Manufactured lossRevealed loss
Where it comes fromThe seller's need to closeThe reader's own situation
What it sounds like"Offer ends tonight""This is where your enquiries drop out"
Can they check it?Rarely, and it falls apart when they doYes, and checking makes it stronger
How it feels afterwardsPushedHelped
What it does to trustSpends itBuilds it

Loss aversion cuts both ways

Here is the part most marketing forgets. To the person deciding, choosing you is also a possible loss: something known given up, and time, money and their own standing at risk if it goes wrong. It often keeps people with the provider they already have.

We heard exactly this when we interviewed the solicitors and insurers who choose Bush & Co. Relationships were built on the quality and personality of the case managers, and solicitors searched by geography first. They were also cautious by nature, so trying someone new needed a push.

The honest push was not fear. It was taking the risk out of trying. We built a consultant finder on a visual map, where solicitors filter by specialism, geography and experience, shortlist, download CVs and save their searches. A cautious solicitor can see who they would be trusting before picking up the phone.

The Bush and Co consultant finder on a laptop, showing case managers pinned on a map of the UK
The Bush & Co consultant finder, with case managers pinned on a map of the UK. See the Bush & Co work

So when someone hesitates, do not reach for a scarier message. Ask what they would be giving up by choosing you, and make it smaller. Show the people and the work, make the first step small, and say plainly what happens next. Our piece on why defaults quietly decide more than your sales pitch comes at the same idea from another side.

A test for any loss-framed message

Ask one thing of any message that leans on loss: is the loss real and already happening, or manufactured to apply pressure? If it is real, you are doing the reader a service by making it visible. If it is manufactured, you are spending trust for a short-term nudge, and they will feel it.

  1. 01Find the cost they are already paying

    Look at where people drop out, stall or choose someone else. Better still, ask a few of them.

  2. 02Check it is real

    If you cannot show where a number came from, leave it out.

  3. 03Name it in their words

    Describe the loss the way the people paying it would, not in your sector's language.

  4. 04Pair it with a way out

    A cost with no next step is just worry. Follow it with one clear, low-risk action.

  5. 05Remove anything manufactured

    Deadlines that are not real, stock that never runs out. If it is not true, it goes.

Persuasion helps someone see their situation more clearly. Pressure hopes they will not look too closely. The first is what behavioural design is for, and it starts by listening to the people you want to reach, the heart of human-centred design.

Common questions

Is using loss aversion in marketing manipulative?

Only when the loss is invented or exaggerated. Showing someone a real cost they are already paying helps them decide. Inventing one to rush them does not. A good test is whether they would thank you once they saw the full picture.

Does loss aversion apply to organisations as well as consumers?

Yes. Someone choosing for a business, a charity or a public body often carries the risk of a bad choice personally, in front of colleagues. That makes the fear of switching strong, so lowering the risk of choosing you usually matters more than warning them what they stand to lose.

What is the difference between loss aversion and FOMO?

Fear of missing out is a loss frame aimed at an opportunity: act now, or others get what you did not. It is honest when the opportunity really is limited. In marketing it is often manufactured, which is why it wears thin so quickly.