What are defence mechanisms and why do they kick in? A psychologist's guide to denial, displacement, rationalisation and sublimation with everyday examples.
At the end of the working day, your manager gave you an unfair telling-off. You thought about nothing all the way home, walked through the door and shouted, with a harshness you did not expect from yourself, at your son for leaving his shoes in front of the door. Then you stood in the kitchen and wondered, "Why did I do that?" This small scene is one of the most familiar everyday examples of the processes psychology calls defence mechanisms. When our mind is faced with emotions that are hard to bear, it often switches on a protective shield without our noticing. In this article we will explain what defence mechanisms are, their most common types, when they help us and when they make life harder, and how they are worked with in therapy.
What Are Defence Mechanisms?
Defence mechanisms are mental pathways that a person uses, largely without awareness, to protect themselves from difficult emotions such as anxiety, shame, guilt, anger or helplessness. The concept first appeared in the work of Sigmund Freud and was later defined systematically by his daughter, Anna Freud. In the years that followed, different theorists classified these mechanisms according to developmental level, suggesting that some are more "mature" and others more "primitive".
This definition has two important aspects. First, defences are usually not a conscious choice. Nobody gets up in the morning and says, "Today I'll use denial." Second, defences are not in themselves a disorder or a flaw. Every person uses defences every day, to varying degrees. Just as the body fights infection with a fever, the mind turns to these pathways to lighten its emotional load.
If we were to use an analogy, defence mechanisms are the mind's shock absorbers. When there is a pothole in the road, the vehicle softens the jolt; but if the shock absorbers work too hard, you lose the feel of the steering and the car's contact with the road weakens. Defences, too, make life easier when they are measured, but when they become rigid they can weaken our connection with reality.
Why Do Defence Mechanisms Kick In?
When the mind is faced with more emotional weight than a person can carry at that moment, it tries to maintain balance. This weight can come from outside: a loss, a rejection, an injustice. It can also come from within: a desire we find hard to accept, a jealousy we feel is beneath us, anger towards someone we love.
Childhood is decisive here. A child who grows up in an environment where their feelings are accepted and where they are comforted when they cry learns to cope with difficult emotions in more flexible ways. A child who grows up with sentences such as "Don't cry, you're a big girl now", "Real men don't get upset" or "It's rude to get angry in front of guests" learns that these emotions are dangerous, and develops ways of ignoring them or diverting them elsewhere. A significant portion of the defences we use in adulthood are solutions that once made it easier for us to survive in that environment.
Stress levels also play a part. Someone who is struggling with the cost of living, working long hours and not getting enough sleep may resort to more rigid and more primitive defences than they would during a rested period. As the mind's resources dwindle, so does its flexibility.
The Most Common Defence Mechanisms, with Examples
The list below is not exhaustive, but it includes the defence mechanisms most often encountered in everyday life. As you read, you are very likely to recognise yourself or someone around you. This recognition is valuable when it is used to understand rather than to judge.
Denial
Not accepting a painful aspect of reality. Not opening the test results your doctor asked for for weeks, or saying "Nothing will turn up anyway" and not going to the appointment, is a typical example. The reaction "It can't be, I must have misheard" in the first hours after a sudden loss is also a temporary and understandable form of denial.
Repression
Pushing a disturbing memory, thought or feeling out of awareness. The person does not do this consciously; they simply notice that they find it hard to remember a certain period or event. Consciously saying "I won't think about this now, I'll deal with it after the exam", on the other hand, is suppression, and is often a healthy skill of postponement.
Displacement
Directing an emotion felt towards one person or situation at a safer target. In the example at the beginning of this article, anger felt towards the manager was carried home to the child. Someone stuck in traffic overreacting at dinner because the salt is not where it should be is another common form of this mechanism.
Rationalisation
Covering a situation that is hard to accept with explanations that sound logical but conceal the real feeling. Someone who did not get the score they wanted in the KPSS (Turkey's public sector recruitment exam) saying "I didn't want to be a civil servant anyway, the salaries are low" could be an example. There may be some truth in this sentence; but it becomes a defence when it prevents the disappointment from being talked about.
Projection
Attributing to someone else a feeling or trait that a person cannot accept in themselves. This mechanism is so common and affects relationships so deeply that it deserves separate treatment; we describe it in detail, with examples, in our article what is projection.
Regression
Returning to the behaviours of an earlier developmental stage when under strain. A five-year-old who starts sucking their thumb again after the arrival of a new sibling is a well-known example. In adults, it may show up as an attitude of sulking when ill, expecting everything to be done for them and pulling a face when asked to do something.
Intellectualisation
Approaching what has happened in cold, technical language in order to reduce the emotional load. After the 6 February 2023 earthquakes, some people spent weeks reading about fault lines, ground surveys and earthquake magnitude calculations. Acquiring information is valuable in itself; but taking refuge in information so as never to feel the fear and the grief can cause those emotions to surface in other ways.
Reaction formation
Displaying, in an exaggerated way, the exact opposite of an unacceptable feeling. A daughter-in-law who carries intense anger towards her mother-in-law but shows her such excessive attention that everyone notices may be an example of this. The excess in the behaviour is often a clue to the underlying feeling.
Sublimation and humour
These are generally counted among the mature defences. In sublimation, a disturbing impulse or feeling is channelled into a socially valued pursuit: expressing anger in boxing training, or sadness in songwriting. In humour, the person lightens the burden of a painful situation without denying it, by also seeing its absurd side. A family waiting in a hospital corridor being able to laugh at their own predicament is a way of catching their breath without ignoring reality.
Are Defence Mechanisms Good or Bad?
The short answer to this question is: it depends on the situation, the frequency and the flexibility. When assessing defences, the following three criteria can serve as a guide.
- Temporary or lasting? Brief denial after news of a loss helps the mind prepare itself gradually for reality. Denial that lasts for months or years, however, prevents the grieving process from being lived through.
- How much does it distort reality? Humour and sublimation largely preserve reality. Projection and denial, on the other hand, can change it markedly.
- Who pays the price? If the anger of a parent who uses displacement is directed at a child, someone else is paying the price of the defence. Recurring conflicts in relationships often persist because each person's defences trigger the other's.
To see how defences feed each other in relationships, let us think of a couple. The woman is hurt by her husband burying himself in his phone in the evenings, but instead of saying so she makes barbed jokes. He hears these jokes as criticism, goes on the defensive, rationalises with "I've been working all day, can't I have a bit of peace?" and buries himself even deeper in his phone. Underneath, both of them feel lonely and unseen; but neither speaks to that feeling directly, only from behind their defences. The cycle continues until one of them names their hurt for what it is.
Our defences may once have protected us; the question is whether they still protect us today, or whether they are narrowing our lives.
Being psychologically healthy does not mean never using defences. It means, rather, having more than one option available when we are struggling, and not being forced to rely on the most rigid defences.
How Can You Recognise Your Own Defence Mechanisms?
Because defences, by definition, operate largely outside awareness, catching them is not easy. Still, there are some clues.
- Look at the intensity of your reaction: If your reaction was much bigger than the situation called for, the real feeling may be coming from somewhere else. Asking "Is this anger really about the salt cellar?" can help.
- Listen to the sentences you repeat: If you often say things like "I don't care", "I didn't want it anyway" or "I'm perfectly fine", be curious about what they are covering.
- Pay attention to feedback from people close to you: Your spouse or a close friend saying "Whenever this subject comes up, you make a joke and move on" can be a valuable observation. Even if your first reaction is to object, give it a little time.
- Watch your body: Your jaw tightening, your stomach knotting or suddenly feeling tired when a particular subject comes up can show that your mind is trying to move away from it.
- Write: At the end of the day, putting a moment that challenged you into writing and trying to answer the question "What did I actually feel at that moment?" makes it easier to reach the feeling beneath the defence.
It is important not to be harsh with yourself in this process. Recognising a defence does not mean you have to drop it immediately. Often you first need to understand what purpose it serves, and then slowly try other ways. Being able to say "So this subject really does weigh heavily on me" instead of "Why do you do this, how weak you are" opens the door to change.
When Should You Seek Professional Support?
Defences may be causing enough difficulty to warrant speaking to a professional in the following situations:
- If the same conflict happens again and again in your relationships and you cannot work out how it starts
- If, months later, you are living through a significant loss or traumatic event "as if it never happened", yet you are experiencing problems with sleep, appetite or physical symptoms
- If you notice that your anger is frequently directed at people who are not responsible
- If the people around you say it is impossible to talk to you about emotional matters
- If you feel cut off from your emotions, "like someone watching everything from the outside"
How Are Defence Mechanisms Addressed in Therapy?
In therapy, defences are not seen as "walls that must be knocked down". On the contrary, they are treated with respect as traces of how the person has kept going until now. Forcibly taking away a defence can leave a person unprotected; so the work progresses within a safe relationship and at a pace that suits the person.
Psychodynamic approaches place defences at the centre of therapy. The therapist gently draws attention to changes of subject in the session, sudden jokes or the disappearance of emotion while something important is being described: "When you were talking about your father's illness, your voice suddenly became very formal. Did you notice?" You can find the details of this approach in our article on psychodynamic therapy.
Cognitive behavioural therapy looks at the same phenomenon in a different language. Avoidance behaviours, safety behaviours and automatic thoughts cover many processes that overlap with defences. For example, keeping constantly busy so as not to think about a subject is treated in CBT as avoidance, and the aim, through small steps, is for the person to become able to tolerate the feeling they are running from. Schema therapy, meanwhile, works through modes such as the "detached protector" with forms of protection that were useful in childhood but leave a person alone in adulthood.
Whichever approach is used, the common goal is similar: that, when faced with difficult emotions, the person is not condemned to a single automatic reaction, but can notice and name the feeling and respond to it in more flexible ways. In this process the defences do not disappear; but they become less rigid and exact a lower price. If you are considering this kind of work, you can find out more about individual therapy.
Frequently Asked Questions
How many defence mechanisms are there?
There is no fixed number; different theorists have proposed different classifications. Some lists include ten defences, others more than twenty. What matters is not knowing the number but being able to notice which patterns repeat in your own reactions.
Is using a defence mechanism a sign of a mental disorder?
No. Everyone uses defences, and some of them help us adapt. Defences only become clinically significant when they become very rigid, markedly distort reality and cause persistent problems in relationships or functioning.
Should I tell the other person that they are using a defence?
A sentence such as "You're in denial right now" usually strengthens the defence. Rather than labelling the person, it is more helpful to share your own observation and feeling: something like "Whenever this subject comes up we change the subject straight away, and I'd like to talk about it."
If I recognise my defences, will they go away?
Recognising them is an important first step, but on its own it is often not enough. Learning to tolerate the feeling beneath the defence and to respond to it differently takes time and repetition.
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Eda Erkan Alapala
Klinik Psikolog. İstanbul Kent Üniversitesi Klinik Psikoloji Tezli Yüksek Lisans mezunu; bilişsel davranışçı terapi, çocuk merkezli oyun terapisi ve çocuk-ergen psikoterapisi alanlarında eğitimlerini tamamlamıştır.
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