Human Modelling in NLP: Generalisation, Deletion and Distortion

Generalisation, deletion and distortion are three processes described in the Neuro-Linguistic Programming (NLP) Communication Model to explain how we select, organise and interpret information. They help us learn from experience, focus our attention and make sense of the world without processing every detail. However, they can also contribute to inaccurate assumptions, selective memories and misunderstandings. Becoming aware of these patterns can help us question our conclusions and respond to situations with greater flexibility.

How Do We Make Sense of Our Everyday Experiences?

Every moment of our lives brings an enormous amount of information. We see, hear, feel and interpret things around us, often without consciously thinking about how we do it. We draw upon our memories, beliefs, values, expectations and previous experiences to make sense of what is happening. The NLP Communication Model describes three processes that influence how we organise and interpret this information: generalisation, deletion and distortion.

These processes are presented as part of an NLP framework rather than a complete scientific explanation of human cognition. Nevertheless, they offer a useful starting point for exploring familiar patterns in everyday life. I would like to examine each process by first understanding what it means, then exploring how it serves us and finally looking at how it can sometimes work in funny, unexpected or unhelpful ways.

What Is Generalisation, and How Does It Influence Our Lives?

Generalisation is the process through which we use one or more experiences to develop expectations about other people, situations or future events.

Imagine a client, forty-five years of age, sitting in front of me and sharing that he feels anxious whenever he has to speak on a stage. As we explore his history, he recalls an experience from when he was twelve years old. He was standing in front of his classmates, trying to deliver a speech. Halfway through, he forgot his lines, and the audience began to laugh.

Even years later, as he recalls the experience, he can remember the heat in his face, the trembling in his hands, the tightness in his chest and the overwhelming urge to disappear. The experience appears to have become an important reference point for how he approaches public speaking. When he thinks about standing on a stage today, he anticipates the possibility of humiliation. His mind may connect the present situation with the earlier experience, and he begins to feel anxious before he has even started speaking.

One experience has become a basis for predicting what might happen in other situations.

From a scientific perspective, we would not conclude from one observation that the client is incapable of public speaking. We would need to explore other possibilities. Is the difficulty related to anxiety, a lack of experience, insufficient preparation, particular social situations or something else entirely?

We would also want to know whether the client has had successful speaking experiences that he has overlooked or interpreted differently.

I may be drifting slightly from the point, but I hope you understand what I am trying to share. Generalisation is not inherently negative. In fact, it is one of the most useful capacities of the human mind. Imagine learning to tie your shoelaces once and then having to relearn the same skill every morning for the rest of your life. We learn the skill and apply it to different pairs of shoes without having to begin from the beginning each time.

The same principle applies when we learn to recognise colours, identify familiar objects or understand common traffic signals. Previous learning helps us navigate new situations efficiently.

Without generalisation, everyday life would require an enormous amount of repetitive learning. The problem arises when we extend a conclusion beyond what our experience can reasonably support. Generalisation is neither useful nor unhelpful in itself. Its value depends on what we generalise, how broadly we apply it and whether the conclusion continues to fit the situation.

What Are Some Examples of Generalisation?

Consider the following examples.

• Public speaking: Being laughed at once while speaking in public and concluding, “I am not a public speaker.”

• Academic performance: Failing one examination and deciding, “I am just not intelligent enough.”

• Reputation in Troy: Achilles’ reputation influences how others perceive him before they have necessarily encountered him on the battlefield themselves. Their expectations are shaped by what they have heard about him.

• Sheldon in The Big Bang Theory: Sheldon frequently applies rules and expectations rigidly across different situations. His difficulty recognising individual differences can lead to amusing misunderstandings.

• Stereotyping: Meeting one dishonest person from a particular profession, community or country and concluding that everyone from that group must be the same.

In each example, a specific experience, rule or piece of information is extended to a broader category.

Some generalisations are useful. If we have repeatedly observed that a particular action produces a particular result, it can be sensible to expect a similar outcome under similar circumstances. However, a generalisation becomes limiting when we stop looking for exceptions or treat a possibility as a certainty.

A more flexible response to the client who struggles with public speaking might be, “I had a painful experience when I was twelve, and it still affects how I feel about speaking in public. But that experience does not tell me everything about what I can do today.” The event remains part of his history, but it no longer has to define every future possibility.

What Is Deletion, and How Does It Shape Our Attention?

Deletion is described in the NLP Communication Model as the process of leaving out or failing to attend to certain information. We cannot consciously focus on every detail of our surroundings at once. Our attention is selective, and we naturally prioritise some information over other information.

This can be extremely useful.

Imagine that you are hungry and enjoying your favourite food. You may focus on its taste, aroma and texture without paying much attention to the temperature of the plate or the sounds coming from the next room. Similarly, imagine that you are exhausted and trying to fall asleep. Although there may be traffic outside or people talking nearby, you might gradually stop attending to those sounds as your attention shifts towards rest.

These examples illustrate how selective attention allows us to focus on what matters in a particular moment. Strictly speaking, not every detail we fail to notice has been consciously or unconsciously “deleted” in a single identifiable process; attention, perception and memory interact in more complex ways. However, the NLP concept of deletion offers a useful metaphor for exploring what we leave out when we describe an experience.

When Can Deletion Become Unhelpful?

Imagine a person who has spent years in a relationship characterised by affection, trust and meaningful shared experiences.

Then, one comment, one disagreement or one disappointing incident occurs. Suddenly, the entire relationship begins to be viewed through that single event. The care, warmth and positive experiences that came before may seem to disappear from the person’s account. The incident becomes the defining feature of the relationship.

Of course, the context matters. A single incident can sometimes reveal a serious breach of trust or cross a boundary that cannot be negotiated. We should not assume that someone is being unfair simply because one event has changed how they feel about a relationship. For the purpose of understanding deletion, however, imagine that the incident has become the only thing the person can focus on, preventing them from considering the broader history.

What we leave out changes the story we eventually tell ourselves.

Consider another example.

A husband is speaking with his wife, who is excitedly sharing that she has received a promotion. During the conversation, she also mentions a few inconveniences at work. Instead of acknowledging her achievement, he focuses the entire conversation on the difficulties she described. He discusses the inconveniences, offers suggestions and asks questions about the problems, but never responds to the news of her promotion.

Eventually, she feels unheard.

He was physically present and may even have been listening carefully to some of what she said. Yet he overlooked the part of the conversation that mattered most to her at that moment. The problem is not necessarily that he intended to dismiss her achievement. He may have been trying to solve the problems she mentioned. Nevertheless, by focusing on one part of the conversation and neglecting another, he missed an important opportunity to connect with her.

Sometimes, the information we leave out is precisely the information another person most needs us to acknowledge.

What Are Some Everyday Examples of Deletion?

Here are a few more examples.

1. In Othello: Othello allows Iago’s suggestions and suspicions to overshadow the evidence of Desdemona’s love and loyalty. His attention becomes increasingly dominated by the narrative of betrayal, with tragic consequences.

2. In Inside Out: Riley’s emotional upheaval changes how she experiences and remembers her life. As sadness becomes more prominent, her relationship with earlier memories becomes more complicated. The film illustrates the interaction between memory and emotion, rather than a literal process in which memories are simply erased.

3. Compliments and criticism: You receive ten compliments throughout the day but return home thinking only about the one critical comment.

4. Relationships: You remember one argument with your partner while overlooking years of love, care and support. This may reflect selective attention, although the argument could also have revealed a genuine issue that deserves attention.

5. Self-image: You look at yourself in the mirror and notice only the one feature you dislike, overlooking everything else about your appearance and the many things your body allows you to do.

In each example, some information becomes more prominent while other information receives less attention. The important question is not whether we should ignore negative experiences. It is whether our attention gives us a sufficiently complete picture to understand the situation.

When a painful event dominates our thinking, we can ask ourselves: What else is true about this situation that I may not be considering? The answer may not make the difficult experience disappear, but it can help us develop a more balanced understanding.

What Is Distortion, and Why Do We Interpret Reality Differently?

Distortion, as described in the NLP Communication Model, refers to the ways in which we interpret, reorganise or assign meaning to information. We do not experience the world as a perfect, unfiltered recording. Our perceptions are influenced by our previous experiences, expectations, knowledge, emotions and the context in which information appears.

When we encounter something new, we try to make sense of it using what we already know. Consider a painting. No painting reproduces every aspect of the world exactly as it exists. The artist selects details, chooses colours, changes proportions and presents the scene through a particular style or perspective.

The painting is a representation of the world, shaped by the artist’s choices and interpretation.

The same is true of poetry, literature and music. Two writers can observe the same event and create entirely different works because they emphasise different details and assign different meanings to what they experienced.

Religious texts offer another interesting example. A passage may inspire countless sermons, interpretations and discussions. Different readers may focus on different themes, connect the passage to different experiences or understand its significance through different traditions. This does not mean that every interpretation is equally supported by the text. It means that interpretation involves more than simply receiving words; it also involves understanding their meaning within a context.

How Can a Small Change Alter the Meaning of a Message?

Consider the familiar sentence:

“Let’s eat, Grandma.”

Now remove the comma:

“Let’s eat Grandma.”

The words are almost identical, but the meaning changes dramatically.

In the first sentence, Grandma is being invited to eat. In the second, the sentence appears to suggest that Grandma herself is the meal.

Of course, most readers use context and their knowledge of language to recognise the intended meaning. They do not interpret the sentence as a literal instruction to eat a family member. The example is humorous because it demonstrates how punctuation and sentence structure can influence meaning.

It also illustrates a broader point: understanding communication requires interpretation. Words do not operate independently of grammar, context and shared knowledge.

How Do Our Expectations Influence What We Perceive?

Imagine walking down a poorly lit street late at night. You notice a figure standing near a building. If you are already feeling anxious, you might interpret the figure as a potential threat. If you are expecting a friend, you might initially assume that the person is waiting for you.

The visual information may be ambiguous, and your expectations can influence how you interpret it. As you get closer, you may discover that the figure is simply someone waiting for a taxi.

Your initial interpretation was not necessarily deliberate or irrational. The available information was limited, and your mind attempted to make sense of it. However, an interpretation can feel convincing without being accurate. This is why it can be helpful to distinguish what we directly observed from the meaning we assigned to it.

For example:

• Observation: Someone was standing near the entrance.

• Interpretation: They might be following me.

• Additional information: The person was waiting for a taxi.

The interpretation was one possible explanation, but it was not the only one.

Is Distortion Always a Bad Thing?

Not necessarily.

Interpretation is essential to making sense of language, recognising patterns, understanding art and navigating social situations. Without the ability to organise information and assign meaning, much of our everyday experience would be difficult to understand.

In the NLP framework, distortion is sometimes discussed as a process through which people transform or reinterpret information. In broader psychology, related phenomena are explored through concepts such as inference, expectation, memory reconstruction and cognitive bias. These concepts overlap in some respects, but they are not interchangeable, and the NLP category should not be treated as a complete scientific explanation of all such processes.

The important distinction is between interpretation that helps us understand a situation and interpretation that leads us to an unsupported conclusion. For example, if a friend does not reply to your message, you might interpret the silence as a sign that they are upset with you. But they could be busy, tired or unable to respond. The interpretation may feel real because it fits your expectations, yet it remains uncertain until you have more information. Distortion becomes potentially unhelpful when we confuse our interpretation with established fact, particularly when doing so affects our relationships or decisions.

How Do Generalisation, Deletion and Distortion Work Together?

Although we have examined generalisation, deletion and distortion separately, everyday experiences rarely fit neatly into three distinct categories.

The processes can overlap.

Imagine that your manager gives you critical feedback during a meeting.

You might focus exclusively on the criticism and overlook the positive feedback you received earlier. This resembles deletion. You might conclude that your manager thinks you are incompetent. This interpretation may involve distortion because the criticism does not necessarily support such a broad conclusion.

You might then decide that you are bad at your job and will never succeed in your career. This resembles generalisation because a particular experience has been extended into a judgement about your overall ability and future.

In reality, the sequence may not happen in this exact order. Your prior beliefs may influence what you notice, and your emotional response may influence how you interpret the feedback. The resulting interpretation may then shape what you remember about the meeting.

The categories are useful for reflection, but they are not separate compartments inside the mind. This is also why it is important not to become overly concerned with identifying the perfect label for every thought or statement.

The purpose of these concepts is not to turn everyday life into an exercise in classification. It is to help us notice what is happening, understand how we are interpreting our experiences and consider whether our conclusions are useful and well supported.

Why Is Awareness More Important Than Labelling?

I once came across a post on Instagram that said, “All men are dogs.”

If you momentarily set aside the emotional charge and the social or political position attached to that statement, you can examine its linguistic pattern.

It is a generalisation. A broad claim is being made about an entire group of people. Of course, the statement is often intended as an expression of frustration rather than a literal claim about every man. Context matters when interpreting language. Nevertheless, it offers an example of how a specific experience or set of experiences can be expressed as a sweeping conclusion.

What made me smile, however, was one of the comments below the post.

Someone replied:

“I disagree. Not all men are dogs. Some are pigs.”

I still laugh when I think about it.

The comment is funny because it challenges the original generalisation while replacing it with another equally sweeping one. But it also makes an interesting point. We can recognise a pattern in someone else’s statement and still fail to notice that we are reproducing the same pattern ourselves.

The ability to identify a generalisation, deletion or distortion is useful only when it helps us examine our own thinking as well as the thinking of others. Otherwise, we risk using these concepts to criticise people rather than understand them.

How Can We Become More Aware of These Patterns?

The next time you find yourself reacting strongly to a situation, pause and ask yourself a few questions.

• Generalisation: Am I extending one or a few experiences into a conclusion about every person, situation or future possibility?

• Deletion: What information am I focusing on, and what important details might I be overlooking?

• Distortion: Am I treating my interpretation of the situation as though it were an established fact?

• Context: What additional information would help me understand what happened?

• Flexibility: Is there another reasonable interpretation that I have not considered?

• Evidence: What supports my conclusion, and what might challenge it?

These questions do not require us to assume that our first interpretation is always wrong. Sometimes our concerns are justified, a pattern really does exist, or a single event reveals something important. The purpose is to develop the ability to evaluate our conclusions rather than automatically accepting or rejecting them.

Conclusion: How Can We Use These Processes More Wisely?

Generalisation, deletion and distortion are three concepts within the NLP Communication Model that offer a way to reflect on how we interpret our experiences.

Generalisation allows us to learn from previous events and apply that learning to new situations. Deletion helps us focus our attention on selected information. Distortion, understood broadly as interpretation and the assignment of meaning, helps us make sense of what we encounter. These processes can be useful, but they can also contribute to misunderstandings, rigid assumptions and incomplete accounts of our experiences.

A single failure can become a judgement about our entire ability. One painful incident can overshadow years of positive experiences. An ambiguous action can be interpreted as proof of another person’s intentions.

When these interpretations go unquestioned, they can influence our emotions, decisions and relationships. However, it is equally important to remember that not every negative conclusion is inaccurate, every overlooked detail is important or every interpretation is unreasonable. The context and available evidence matter.

The goal is not to eliminate these processes or become obsessed with their definitions. It is to recognise when they may be influencing our judgement and to remain willing to reconsider our conclusions. As much as we may describe generalisation, deletion and distortion as separate linguistic patterns, real life is rarely so neatly organised. They can overlap, influence one another and operate alongside many other cognitive processes.

Don’t look only for the definitions. Look at what is happening in life, how you are interpreting it and how you are participating in it. Awareness gives us an opportunity to pause between an experience and our response. It allows us to question familiar assumptions, consider additional information and make choices that are more deliberate than habitual.

The more willing we are to examine our own interpretations, the more opportunities we create to understand ourselves, communicate with others and respond to the world with greater flexibility.