Customers say one thing and do another, mostly because the vast majority of purchase decisions run automatically through System 1: fast, intuitive and context-dependent, rather than out of unwillingness. You design consumer behaviour by changing the choice environment: the defaults, the social proof and the framing of the choice. That's what you learn with Behavioural Design.
"We have the best price-quality ratio. Customers still pick the competitor."
10,000+ professionals trained, including people from
They are documented by Kahneman, Cialdini and Thaler. They apply to your customers in the shop, on the website and on the phone. And they are all designable. As long as you leave them untouched, every sales argument loses to the brain on autopilot.
Ask a customer why they bought something and they'll give you a logical story. That story is constructed after the fact. The real decision was already made, automatically, before the rational brain had an opinion.
In research, 80% say quality matters most. At the checkout, the lowest price or easiest option often wins. Intentions and behaviour run through different systems in the brain.
Too many variants, features or price points don't help customers choose better, they make customers drop out. Every extra option demands cognitive energy most people are unwilling to spend.
Whoever designs the default subscription, the default packaging or the default delivery slot effectively designs the behaviour of 80% of customers. Most people don't deviate from what's pre-set.
"Thousands of customers already did this" convinces faster than a product argument. Uncertain customers look at what others do, not at what's objectively best.
"95% fat free" sells better than "5% fat", even though it's the same message. The packaging of information drives choice just as hard as its content.
Most sales arguments address the conscious, rational mind. But buying behaviour largely runs on autopilot. Rational arguments never reach it.
Designing consumer behaviour is the process by which an organisation shapes the choice environment so that the desired purchase decision becomes the easy, obvious choice. Not by convincing customers with more arguments, features or discounts, but by designing the defaults, social proof and the framing of the choice so that the desired behaviour becomes the path of least resistance.
The consumer behaviour and marketing professionals among our 10,000+ alumni have one thing in common.
This course is great. As a researcher, I keep up-to-date on the field of consumer behaviour. In this way, I can help my clients with the right insights. But now, I also learned (and practised) how to make new steps with this framework to create practical solutions. I was searching for this for a while now.

At the Academy you learn a lot about behavioural change and how to apply it in a short period of time. The training flew by and was very well put together. Amazing how complicated material comes to life in a fun and interactive course. I am definitely going to apply it in my work.

The programme with SUE taught me the importance of thinking about the human behind the client, because a client will not act from expected rational thinking patterns. As an organisation it is important that we start thinking outside-in at the right moments to create that much needed added value.

The Deep Dive Behavioural Marketing Foundations teaches you in one day to translate the principles behind consumer behaviour into campaigns that genuinely move people. Follow it online at your own pace, or as a Masterclass with your team.
Prefer to learn the full method first? View the Fundamentals Course →
Already know the basics? Also check out Behavioural Marketing Advanced → €690
Want to tackle it with your whole team or organisation? See the in-company formats ↓
Three in-company formats, depending on how deep you want to go and how long you want to build. Always applied to your own customer or sales challenge.
Most behavioural science knowledge sits locked in academic papers. SUE built the Influence Framework, a practical step-by-step method that any marketer, CX professional or sales professional can apply without a scientific background.
“ SUE Behavioural Design was a real experience that led me to look differently at behaviour. They take you along a very pragmatic way under challenging themes. I think the Influence Framework will solve many problems in the world. It is more than just a method, it is a fundamentally different way of thinking.
In-depth articles on the behavioural science behind purchase decisions, written from SUE's practice.
How a third, less attractive option steers the choice between the other two, and why that works exactly the same in pricing tables and packages.
Read article →Same message, different packaging, different behaviour. Why how you say something matters just as much as what you say.
Read article →The order, the defaults and the presentation of options decide what customers choose, before they've read a single argument.
Read article →Why customers (and organisations) keep sticking to a choice already made, even when it's no longer the best one.
Read article →Because they address the wrong brain. System 2, the rational and analytical brain, is slow and lazy. It only kicks in with high involvement or uncertainty, and then tires quickly. Most purchase decisions are made by System 1: based on ease, habits and social cues. If you only communicate rationally, you miss 96% of the decision moments.
The say-do gap is the difference between what customers say matters to them and what they actually buy. In research, quality often scores highest, at the checkout the lowest price or the easiest option often wins. The difference is not dishonesty but context: intentions and behaviour run through different systems in the brain.
We use three proven behavioural principles: defaults, which make the desired option the standard, social proof, which makes visible that other customers already choose what you want to show, and framing, which presents the same information so the desired choice feels logical. No extra arguments, just smart design of the choice environment.
Yes. Most organisations choose an in-company programme, where we apply the Behavioural Design method on site to your own customer or sales challenge. That can be a one-day Masterclass for a team, a multi-day Sprint, or an organisation-wide Learning Journey. Your team works on the behaviour that is actually stuck in your organisation, not a case study from a book.
It depends on the format. An individual Deep Dive starts from €690 and the two-day Fundamentals Course from €1,190. For teams and organisation-wide programmes, we design an in-company Masterclass (€7,990), a Sprint or a Learning Journey. In a no-obligation call we look together at which format fits your challenge and scale.
From sales argument to choice architecture. The Behavioural Design Method gives you the framework to design it.