ABCD model for de-escalation and control

Article by: Carmen Lopez-Brea

Last update: September 19, 2025

What do you do when someone insults your colleague, crosses your boundaries, or bangs their fist on the counter? Most teams don’t have a ready answer to that question. They remain silent, laugh awkwardly, or intervene too quickly. Meanwhile, the number of reports of aggression in customer-facing professions is rising every year. Employees feel unsafe, managers are struggling to keep up, and the organization pays the price.

In this article, I explain how the ABCD model, developed by the Dutch police force, helps you to quickly identify behavior and set professional boundaries without having to become more aggressive yourself.

Why is it so important to be able to deal with emotion and aggression in the workplace?

Because, as an organization, you bear essential responsibility for the safety and employability of your employees. Every year, more than 21% of Dutch employees experience aggression from external parties such as customers, patients, or visitors, especially in sectors with a lot of customer contact (such as schools, daycare centers, pharmacies, municipalities), that percentage is even higher. Employers are often unaware of the significant impact this has: victims of aggression are more likely to experience health problems, are less satisfied, report sick more often, and are more likely to consider leaving.

Not every employee has years of work experience or has built up a thick skin, which means that verbal abuse, manipulative behavior, discrimination, or shouting no longer affect them. Behavior characterized by high emotions and/or verbal aggression from a single customer can throw your most sensitive colleague off balance. That is why every team needs a joint approach, and you, as a manager, need to take the lead in this. In this article, you will learn:

The origin and relevance of the ABCD model,
What exactly the ABCD model is and why it is so effective in your team,
The skills you can use,
What does the ABCD model offer you as a manager?

The origin and relevance of the ABCD model

The ABCD model was developed within the Dutch Police Academy as a practical tool for police officers to quickly assess behavior in stressful situations and respond appropriately. In the daily work of police officers, it is common for citizens to react with emotion or aggression. For example, when issuing tickets, making arrests, or dealing with confrontations in the neighborhood.

There was a need for a clear framework to help professionals distinguish between different forms of behavior: from emotion to verbal or physical aggression. The model offers this: it describes four levels of behavior (A to D), with corresponding interventions, so that professionals do not react too quickly (or too late).

Although the model originates from police practice, it is now widely used in sectors where employees have to deal with emotional or aggressive reactions from customers, clients, or citizens. Think of healthcare, education, municipalities, daycare centers, schools, pharmacies, housing associations, benefits agencies, and public transport companies.

In this context, it is just as important to be able to interpret behavior: is someone angry, afraid, disappointed, or is the situation really becoming unsafe?

From my experience as a trainer, I see how often things go wrong because people fail to recognize the difference between high emotion and aggression. Someone who shouts at you is not necessarily being aggressive. Often, that person is simply overcome with emotion and looking for a way out. At the same time, someone who remains calm but uses threatening language such as, “You’re going to fix this now, or I’ll be waiting for you outside,” may well be crossing the line.

The difference is not in the tone, but in the content and intention of the message. And that is precisely why the ABCD model is so powerful: it teaches you to observe behavior instead of just reacting to volume or attitude. And that makes it indispensable, even outside the police force.

What is the ABCD model? A practical behavior ladder

The ABCD model is a behavior ladder that helps professionals interpret escalating behavior from customers, clients, parents, or citizens and respond to it effectively. The model distinguishes four types of behavior, each with its own characteristics and its own way of responding. The strength of this model lies in its simplicity: by observing behavior instead of responding immediately, you create space to consciously choose how you want to act.

ABCD model for de-escalation - Toolshero

Figure 1 – The ABCD model

I behavior

What is it?

A behavior arises when people feel powerless, frustrated, or unheard. The emotion is directed toward themselves. They express their emotions, which can be loud and intense, but not always. There is no transgressive behavior yet, but the tension is mounting.

How do you recognize this?

People react based on emotion. This can be anger or sadness.
They mainly talk about their personal situation.
They often use the word “I” (the emotion is directed towards themselves).
People complain and whine and may ask for an exception.

What can you do?

Listen, summarize, and ask follow-up questions. Show understanding, be flexible, reflect on feelings, and check whether you can both agree on the content. If so, you can conclude the conversation.

B – Your behavior

What is it?

With B behavior, people also feel powerless, frustrated, or unheard. However, the emotion is directed at you as an organization. They express their emotions, often loudly and intensely, but this is not always the case. With B behavior, there is no transgressive behavior yet, but the tension is rising.

How do you recognize this?

It is about you as an organization and the rules.
The customer criticizes the rules, policy, procedure, and/or the organization.

What can you do?

Here, you act just as you would with A behavior. You start by really listening to the customer and summarizing what they say. You respond flexibly, ask questions, and occasionally reflect their feelings so that the balloon of emotion can deflate completely. Then check whether the customer is ready for your explanation. If so, you can move on to the content and then conclude the conversation.

C – Your behavior

What is it?

With C behavior, emotion turns into verbal aggression. The customer focuses on you as a person, with insults, accusations, intimidation, manipulation, discrimination, flattery, provocation, name-calling, denigration, etc. This behavior crosses boundaries and constitutes aggression.

How do you recognize it?

Swearing, derogatory language (“You’re such an idiot”).
Threatening tone or attitude.
Sentences beginning with: “You should…”, “You don’t understand anything…”
Personal attacks on your performance.

What can you do?

Change the behavior.
Point out the unacceptable behavior.
Call them to order.
If the customer continues to exhibit C behavior, you can give them a choice.
Always report it to your manager.

D – You + Me behavior

What is it?

D behavior is aggression. It involves serious verbal threats or physical violence. Safety is at risk.

How can you recognize it?

Shouting threats (“I’ll get you later”).
Throwing things, threatening physical violence.
Unpredictable or sudden movements.
Stalking-like statements: “I know where you live.”

What can you do?

Stop, secure, de-escalate. Conversation is no longer possible. You distance yourself, call for help (colleague, security, police), and ensure your own safety. Always record the incident afterwards.

The difference lies in the message, not in the decibels

An important pitfall is that people only respond to volume or emotion. But behavior only becomes transgressive when it comes to the content of the message and the intention behind it. As I wrote earlier: someone who shouts out of frustration is probably still at level B, while someone who calmly says “I’ll wait for you outside” is definitely at level D.

The ABCD model teaches you to make this distinction and adjust your response accordingly.

Skills you can use

The model requires different skills for each behavioral level. These include:

Listening, summarizing, asking follow-up questions, and identifying emotions (emotional reflection) (for A and B)
Setting clear boundaries (for C),
Self-control and assessing safety (for D)
And always: observing, staying calm, and consciously switching gears.

The ABCD model is therefore not only an analytical tool, but also a practical guide for professional conduct, even under pressure.

Self-regulation for the ABCD model

The ABCD model is not a theory to be tucked away in a drawer. It is intended as a practical compass, useful in the hustle and bustle of everyday life. Its strength lies in its simplicity: it teaches employees to observe rather than overreact, and it helps managers to enable their teams to switch professionally between going with the flow and setting boundaries.

It starts with awareness

The first step is awareness. Many people react intuitively to behavior: they are shocked, respond angrily, or ignore inappropriate comments out of self-protection. But these are not conscious choices, they are reflexes. The ABCD model breaks through that reflex by giving employees a language for what they see and experience. They learn to recognize behavior, label it, and respond to it consciously.

“I notice that this customer is shouting (level B), but he is not attacking me. I remain calm and show that I understand him.”
“This customer is ridiculing me personally (level C). That is crossing the line, I indicate that this is not acceptable.”

The biggest pitfall: your own stress response

A common mistake in assessing behavior is that we don’t regulate our own tension. In a split second, our body switches to the primary survival system: fight, flight, or freeze. This is immediately reflected in our behavior:

You engage in the discussion and try to prove yourself right (fight),
You agree with the customer just to get it over with (flight),
Or you clam up and don’t know what to do (freeze).

That is why self-regulation is a crucial skill. In my training courses, we consciously focus on this: before you say or do anything, it is important to calm yourself down. This starts with observing what is happening in your body:

Where is your breathing?
What is your posture like?
Which muscles are tense?
Which thoughts predominate in a stressful situation?

Often, our breathing is high in the chest. That is a sign of stress. By consciously moving your breathing to your abdomen, you signal to your nervous system that you are safe. Your body then switches to a calmer state, allowing you to think and act clearly again.

A simple exercise:

Lie on your back, place a book or your phone on your stomach, and breathe toward that object.

Inhale: count to 4, stomach rises
Exhale: count to 6, stomach sinks back in

Repeat this for a few minutes and you will notice that you start to yawn. A sign that your body is relaxing.

I often say: just look at a baby on the changing table. They breathe purely from the stomach. But as soon as such a child is startled, you immediately see how their breathing shoots up to the chest.

For us adults, this high breathing has become the norm over the years, while it is precisely this deep abdominal breathing that restores your basic calm.

By first regulating your physiology, you can then effectively switch to the right response. This prevents you from reacting primarily to behavior and unintentionally escalating the situation. Because someone at level B doesn’t need boundaries, but rather space. And someone at level C does need clear boundaries, without you losing your temper.

Real-life case study: “I didn’t see it coming”

One of my clients, an educational organization, had to deal with a parent who was seriously overstepping boundaries. It started with verbal abuse, threatening language, and physical intimidation: the parent suddenly stood right in front of an employee, raised their voice, and moved aggressively into her personal space.

The situation got so out of hand that it was not only discussed internally, but eventually even made it into the media. The director of the organization decided to send a strong message and even asked questions in parliament about how employees in education can be protected against aggression. He believed that this should not be a normal part of the job.

Unfortunately, what happened here is no exception. Especially for employees such as teachers or educational staff, who regularly deal with the same parents, tension often creeps in slowly. Parents may have been exhibiting A or B behavior for some time—for example, due to frustration about the home situation, an old discussion with a colleague, or the feeling of not being heard. When that behavior is not recognized or acknowledged, it can suddenly escalate one day. And then you hear afterwards: “I didn’t see it coming”.

But with the ABCD model, you can see it coming. Precisely because it is not based on incidents, but on escalating behavior. You learn to recognize subtle signals: increased tension, repeated complaints, raised voices, restless behavior. These are moments when you can already make adjustments, go with the flow, or set boundaries—depending on the level.

In a society where tempers are increasingly short, this knowledge is essential. Participants in my training courses often say: “I feel much more confident now. I can see it coming, I know what to do, and I stay calm.” Within five minutes, they learn how to de-escalate, which not only gives them confidence, but also brings peace to the whole team.

What does the ABCD model offer you as a manager?

As a manager, you want only one thing when it comes to safety and customer contact: that your team is strong and handles difficult situations professionally. Not only for the well-being of your employees, but also for the continuity and reputation of your organization.

The ABCD model helps you organize this in a structured way. You can discuss behavior without it becoming personal, you give employees a tool to remain professional under pressure, and you prevent incidents from throwing your team off balance or leading to long-term absenteeism.

Less absenteeism, more confidence

When employees are repeatedly exposed to emotion or aggression without having any tools to deal with it, they literally burn out. They start to worry, sleep less well, and eventually call in sick. By investing in skills such as de-escalation, setting boundaries, and self-regulation, you can prevent absenteeism and increase confidence in your own abilities. Employees no longer feel powerless, but resilient.

Better teamwork

The model gives you a common language to talk about behavior. Instead of saying, “That customer was awful,” you might say, “I think we were dealing with C behavior there, what do you think?” This opens the door to reflection, teamwork, and a shared strategy. Teams are more likely to support each other instead of judging or staying quiet.

Professionalizing your organization

Customers, clients, and citizens can sense immediately whether they are dealing with someone who remains calm and composed, even in stressful situations. When your team works according to the ABCD model, it radiates professionalism and reliability. Not by becoming tougher, but by being clearer.

As a leader, you know what to focus on

The model helps you as a manager to analyze incidents without noise:

What kind of behavior was this?
How was it responded to?
What went well, what could be improved? This not only gives you control over the situation, but also over the culture in your team. Because where safety and boundaries are clear, there is room for connection and trust.

We live in a time when tension in society is palpable—also at the counter, in the classroom, on the phone, or in the consultation room. Employees are increasingly confronted with customers or clients who react emotionally, cross verbal boundaries, or even become threatening. As a manager, you can no longer consider these to be “incidents.” You have to organize them professionally.

In summary

The ABCD model offers a simple but powerful structure for this. You learn to recognize the difference between acceptable, emotional, confrontational, and destructive behavior—and how to respond effectively to it as a professional. Employees regain control of difficult situations, and you, as a manager, know what to focus on. The model helps you prevent escalation, reduce absenteeism, and strengthen mutual cooperation.

What do I like best? That after just one training session, people say: “I feel more confident. I know what I’m seeing. And I know what to do.” That’s exactly why I do this work.

Now it’s your turn

What do you think? Do you recognize the explanation of the ABCD model? What do you think are the success factors for de-escalation and control during unpleasant situations? Do you have any tips or comments?

Share your knowledge and experience in the comments section below this article.

More information

Leu, L. (2023). Nonviolent Communication Workbook. Lemniscaat.
Koetsenruijter, C. (2021). The Aggression Paradise – What we must do to stop the decline in civility in the Netherlands. S2 Uitgevers.
Koetsenruijter, C. (2020). You need to shut up! – Dealing with angry citizens, parents, customers, and patients. S2 Uitgevers.
Rosenberg, M. B. (2011). Nonviolent communication: disarming, effective, and connecting. Lemniscaat.

How to cite this article:
Lopez-Brea, C. (2025) ABCD model. Retrieved [insert date] from Toolshero: https://www.toolshero.com/communication-methods/abcd-model/

Original publication date: 09/18/2025 | Last update: 09/18/2025

Add a link to this page on your website:
<a href=”https://www.toolshero.com/communication-methods/abcd-model/”>Toolshero: ABCD model</a>

Did you find this article interesting?

Your rating is more than welcome or share this article via Social media!

Average rating 4.3 / 5. Vote count: 6

No votes so far! Be the first to rate this post.

Article by:

Carmen Lopez-Brea

Carmen Lopez-Brea is a trainer, consultant, and actor specializing in dealing with emotion and aggression. After years of experience as a (team) manager in a public organization, she experienced firsthand how challenging stressful situations can be. With Masters of Communication, she helps organizations to shape social safety and de-escalation in a practical and humane way.