A watertight piece of advice that no one follows, a contract no one reads, a code of conduct that gets circumvented. Legally correct and practically worthless. Behavioural Design gives you the second half of your profession. You learn how behaviour works, and how to design it into advice, contracts, compliance and boardroom influence.
10.000+ professionals trained, including people from
Advice, contracts, compliance, negotiation, boardroom: it all comes down to whether people actually do something. Time and again the same pattern shows up: people do what they have always done, even when they know better. The question is not whether you recognise this. The question is how you break the pattern.
The advice is correct. The behaviour around it isn’t. Legally perfect, practically worthless.
Pages of protective clauses, one click to agree. The risk sits in what people accept without reading.
New code, mandatory e-learning, everyone signs. A year later the incidents come from the same corners.
The law has no framing. People do. At the leadership table, what matters most is how something lands.
Cost-benefit doesn’t hold. Loss aversion, ego and framing take over.
Sunk-cost behaviour and overload wreck even the most carefully planned trajectory.
The boardroom wants simple answers, you give nuanced advice. Nuance loses out to clarity.
AI is eating the routine. Margins and relevance are under pressure on the part where the machine can reach.
Your work is valued for its quality, not its outcome. High marks, low follow-through.
Most behavioural science knowledge is locked in academic papers and consultancy reports. SUE built its own method, the Influence Framework, which translates that knowledge into a practical step-by-step process any lawyer can apply, without a scientific background.
Individually, with your whole team, or as self-study. Three formats in which you learn how to design behaviour into advice, contracts, compliance and negotiation. Choose the format that fits your role, schedule and firm.

The foundation of legal thinking in behavioural variables. For lawyers, in-house counsel, compliance officers and notaries who want to learn the second half of their profession: how to design behaviour into advice and contracts.
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One day in which your entire legal team or firm learns how behaviour works in advice, contracts, compliance and negotiation. You go home with a concrete intervention on one urgent issue.
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For lawyers who win the argument and lose the room. Learn how to turn resistance into buy-in: in boardroom, mediation and negotiation. Available today as a one-day team training, soon also online at your own pace.
View this trainingBeyond the three featured trainings above, we have a broader offering. Pick the format below that fits you. Every path leads to the same goal: designing behaviour that works in advice, contracts, compliance and negotiation.
You build a deep understanding of how people really make decisions and learn how to use AI to apply those insights right away. You work on a recognisable behavioural challenge, with frameworks you can use the next day.
You work on a real behavioural challenge from your own organisation, deepen your knowledge of the method and learn to use AI for faster, sharper behavioural analysis. You finish as a certified expert.
You go home with a working approach, a different view on behaviour and a method that sticks. Two days with Tom and Astrid, in a Dutch or English-language edition.
Most interviews produce socially desirable answers. In this day you learn how to break through that and surface the unconscious drivers that really explain behaviour.
Our flagship method at your own pace, with AI Prompt Guides and lifetime access to the SUE Guru.
Design customer experiences that remove friction and turn satisfied clients into real ambassadors.
The method behind change programmes that actually succeed, based on influence rather than pressure.
Coming soon: 8 new trainings in the Online Academy. Behavioural Marketing Foundations, Behavioural Marketing Advanced, Designing AI Adoption, Responsive Leadership, Behavioural HR and more, from Q2 2026. Visit the Online Academy →
In one day your team gets a grip on how your audience really decides, with your own challenge as the case.
Two intensive days in which your team learns the full SUE method and applies it directly to your own challenge, most popular with teams.
Three months, six half-days: build structural expertise and solve a concrete business case.
Five months for leaders who want to truly move people through influence rather than authority.
Larger organisations? We design multi-year Learning Journeys fully tailored to your strategy. Plan a no-strings conversation →
Behavioural Design for lawyers is the application of behavioural science to the legal profession: advice, contracts, compliance, codes of conduct, negotiation and boardroom influence. The method helps you understand why clients, employees and opposing parties do what they do, and how to design the legal context so that the desired choice also becomes the easiest choice.
Book a no-strings orientation call. Marjan connects you with the right SUE-er who can give targeted advice based on experience with legal challenges.
Choose a moment that works for you.
The lawyers among them, from Allen & Overy to Nautadutilh and Houthoff, share one thing: afterwards they look at their profession differently.
In two days you learn the foundations of behavioural design. The examples support the theory really well, as do the many questions whose answers clarified how the theory works in practice. A highly skilled trainer and exercises that let you apply it straight away.

The mix of theory and practice worked well. The summaries and take-aways per chapter helped. I liked that you could apply the material in practice immediately. I have no points for improvement. One of the best trainings ever!

Absolutely worth the investment. High level, plenty of depth and a nice translation to practice. Many thanks!

Concrete changes in how you approach advice, contracts, compliance and negotiation, rather than abstract knowledge.
You use the Influence Framework as your starting point: which pains, gains, anxieties and comforts are in play here, and what job-to-be-done sits underneath?
You know how to design contracts, codes of conduct and compliance so the desired choice becomes the easiest choice, not just the legally required one.
You have a shared framework to explain why an opposing party decides the way they do, and how to respond without weakening your legal position.
Most participants start without any prior knowledge. The training teaches you the behavioural science you need, linked directly to your own legal practice. No academic theory for its own sake, just actionable insights you can apply the very next day in your advice, contracts, compliance work or negotiation.
You learn the SUE Influence Framework: a method for analysing why clients, employees and opposing parties don’t do what they legally should, and for designing your advice, contract or policy so that it actually lands. You work on your own legal case during the training and go home with a fully worked-out approach.
The training is most valuable for experienced lawyers. You’ve got the practical experience. The training gives you the scientific framework that backs up your intuition and sharpens your approach. Many participants say afterwards: I was already doing parts of this, but now I finally understand why some advice gets acted on and other advice ends up in the drawer.
A deliberately mixed group: lawyers, HR professionals, marketers, communication advisers, policymakers and leaders all together. Maximum 16 participants. That mix is what makes it valuable, because you learn not only from the content but also from how professionals in other sectors deal with similar behavioural challenges.
Yes. We invoice in the company or firm name and the training is EQAC-accredited, which makes reimbursement easier. Get in touch if you need a quote or additional information for your request.
Start with the Fundamentals. That gives you the complete Behavioural Design framework: the Influence Framework, the JTBD method and all core tools. Deep Dives such as Persuasive Writing or Building Buy-in build on that with specific applications. Without the Fundamentals, a Deep Dive lacks its foundation.
The Fundamentals course is the broad foundation programme: 2 days live (or 33 online lessons) in which you learn the complete Behavioural Design framework. You can then apply it to any legal context. A Deep Dive training takes 1 day and dives deep into one specific theme, such as Persuasive Writing, Building Buy-in or Behavioural Interviewing. If you take both, the Fundamentals course always comes first.
Yes. The Behavioural Design training is EQAC-accredited, which makes reimbursement by firms, employers and L&D funds easier. We invoice in the company or firm name and provide a quote on request. The course is delivered in Amsterdam and online. Get in touch for a personal consultation on which programme best fits your situation.
Ready to take the step? View the next start date or ask your question.
10.000+ professionals have gone before you · 9.7/10 rating · EQAC accredited
Every week I notice something: a hospital sign, a supermarket shelf, a sentence in a meeting. Always something that shows exactly how context shapes behaviour. I write it down. Every Thursday morning it lands in your inbox. In 90 seconds.
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