The Avoidant Code by Elias Frei
  1. Home
  2. Avoidant attachment style
  3. Causes

Causes: how avoidant attachment forms

By Elias FreiUpdated August 4, 202611 min read

Avoidant attachment is often described as a flaw. It is more accurate to call it a solution that outlived its problem. Somewhere early on, a child worked out that reaching for comfort did not reliably produce comfort, and adapted. This page is about how that adaptation forms, what the research actually shows, and why the word "fault" is the wrong tool here.

The experiment that made it visible

In short

In the Strange Situation, one-year-olds are briefly separated from their caregiver. Securely attached children protest and then seek contact on reunion. A distinct group ignores the caregiver instead, playing on as if nothing happened. Heart rate measurements showed these apparently unbothered children were as physiologically stressed as the criers. The calm was already a strategy.

That last finding is the one that matters, and it is easy to skim past. The avoidant infants were not less distressed. They were equally distressed and had already learned to hide it, at twelve months old.

Nothing about that is a decision. A very young nervous system tries an approach, observes what happens, and adjusts. If reaching out brings comfort, reaching out becomes the strategy. If reaching out brings irritation, awkwardness or nothing at all, the system learns to stop broadcasting and handle it alone. Both are intelligent responses to the environment they were formed in.

What follows the child into adulthood is not a memory of any of this. It is a setting.

The first route: needs met with discomfort

In short

The more common path runs through caregivers who managed practical needs well and emotional ones poorly. Food, homework and lifts were reliable. Crying, fear and neediness produced awkwardness, impatience or a change of subject. The child concludes that having needs is fine as long as they are not felt out loud.

Parents in this pattern are frequently loving and often had no other option, having grown up without any language for emotion themselves. Research on the intergenerational transmission of attachment finds that the strongest predictor of how a parent responds is how their own attachment history is organised, not their intentions.

The messages are rarely explicit. They are mostly small and repeated:

  • "Do not cry, it is not that bad." The feeling is corrected rather than received.
  • "You are so independent." Praise attached specifically to not needing anything.
  • Distraction instead of comfort. Ice cream, a screen, a joke. Kind, and it moves the subject away from the state.
  • Visible relief when you cope alone. A child reads that instantly and adjusts to produce more of it.
  • Emotion treated as a problem to be solved. Which teaches that a feeling needs fixing before it can be shared.

The result is not a child who feels less. It is a child who stops routing feelings outward, and eventually loses easy access to them inward as well. That is where the adult sentence "I do not know what I feel" comes from, and it is usually honest.

The second route: a child who had to carry too much

In short

A different childhood produces the same pattern: one where the roles were reversed. A parent who was ill, overwhelmed, grieving or dependent, and a child who became the stable one. Here the lesson is not that needs are unwelcome but that there was no room for them, because someone else's needs filled the space.

These are often the children described as remarkably mature. They regulated the household mood, comforted the adult, kept things running. The competence was real and so was the cost: closeness became associated with responsibility rather than with safety.

In adult relationships this shows up in a specific way. Intimacy triggers not just exposure but obligation. When a partner is upset, the reaction is not indifference but an old and heavy sense of being on duty, and the fastest way out from under it is distance.

It also explains why so many people with this history are excellent in crises and uncomfortable in ordinary closeness. A crisis has a task in it. A quiet Sunday afternoon has nothing to do except be close, and that is the harder one.

Nobody chooses this. A child works out what to do with a need that finds no answer, and the answer is to need less. The Avoidant Code, Chapter 2

Why two opposite childhoods produce one pattern

In short

Because the operative variable is not warmth or coldness but whether distress reliably brought a response. Too little availability and too much responsibility both teach the same lesson: your inner state is not something this relationship will hold. The strategy that follows is identical, which is why two people with very different histories recognise each other in the same description.

This also explains a frequent confusion. People read about avoidant attachment, look back at a childhood with no cruelty in it, and conclude the framework does not apply. But nothing in the research requires cruelty. Long working hours, a depressed parent, a sibling with a serious illness, a family culture where feelings were simply not discussed, all reduce responsiveness without anyone doing anything wrong.

There is one more reason the past can look unremarkable in hindsight. Avoidant strategies operate on memory as well as on feeling. In attachment interviews, avoidantly attached adults typically describe their childhoods in positive general terms and then cannot produce specific scenes to support them. The absence of detail is itself part of the pattern.

What temperament contributes, and what it does not

In short

Children arrive with different sensitivities, and the same parenting lands differently on different temperaments. But research comparing twins and adoptive families finds attachment security is driven mainly by the caregiving environment rather than by genetics. What is inherited across generations is the caregiving style, and style is learned.

This matters for a practical reason. If the pattern were genetic in any strong sense, changing it would be a matter of managing a fixed trait. Because it is learned, it is subject to relearning, which is exactly what the research on earned secure attachment describes. Slow, unglamorous, and real.

What this does not mean about your parents

In short

Understanding the origin is not the same as filing a charge. Most caregivers in this picture were doing what was done to them, often under conditions with very little room. You can hold both facts at once: this shaped you, and they were not villains. The people who get furthest with this material are usually the ones who refuse to pick between those two.

There is a version of this work that stalls permanently at the parents. Every difficulty gets traced back, catalogued, and left there. It feels like progress and changes nothing, because the person who has to do something different now is you.

And there is the opposite version, more common in avoidantly attached people: refusing to look at any of it, because looking feels like disloyalty. That one stalls too. The middle path is unremarkable and works: this is where it came from, it made sense there, and it is mine to work with now.

From cause to change

In short

Knowing the origin does not rewire anything on its own. What it reliably does is replace the question "what is wrong with me?" with "what did I learn, and where?". That shift matters because shame drives the withdrawal, and a pattern you can see without contempt is one you can start to interrupt.

The practical work does not happen in the past. It happens in the specific moment when your system reads closeness as danger and you notice it without obeying it. That moment is available several times a week, which is more opportunity than any amount of history provides.

What that work looks like in detail, including how long it realistically takes, is in overcoming avoidant attachment. Why the body reads intimacy as pressure in the first place is in why closeness feels like pressure.

Important: this page describes ordinary unavailability, not abuse. If your childhood included violence, neglect or sexual abuse, that belongs with a trauma-informed therapist rather than with a self-help framework, and attachment theory alone will not be enough. In a crisis: Samaritans 116 123 in the UK and Ireland (free, 24/7), 988 by call or text in the US, or your local emergency number.

Frequently asked questions

Is avoidant attachment always the parents' fault?

No, and framing it that way usually gets in the way. Caregiving styles are themselves inherited, often from people who had no language for feelings at all. Illness, loss, poverty, depression and long working hours all reduce availability without any lack of love. The pattern has a cause; it does not need a culprit.

Can avoidant attachment develop later in life?

The core is usually laid down early, but it is not sealed. Later experiences shift it in both directions: a long relationship with a reliable partner can soften it, and betrayal, loss or a period of having to be self-sufficient can harden it. Attachment is a working model that keeps updating, just slowly.

My childhood was fine. Why am I still like this?

Two reasons this happens. First, the relevant events are often ordinary rather than dramatic: not being comforted when you cried, being praised for being no trouble. Second, avoidant strategies include not remembering the difficult parts vividly, which is why many people describe their childhood in positive general terms and cannot supply specific scenes.

Is it genetic?

Temperament is partly inherited and it shapes how a child responds to the same caregiving. But twin and adoption research finds that attachment security is driven mostly by the caregiving environment rather than by genes. What is strongly transmitted across generations is the caregiving style itself, and that is learned rather than inherited.

Does one difficult event cause it?

Rarely. Attachment forms from repetition: thousands of small moments in which needing someone either worked or did not. A single loss can leave deep marks, but the avoidant strategy is usually built from a pattern of responses, not from one event.

Does knowing the cause change anything?

By itself, no. Insight does not rewire a nervous system, and plenty of people can explain their attachment history in detail while behaving exactly as before. What it does is remove the question "what is wrong with me?", and that removal is often what makes the actual work bearable.

Keep reading

Sources and further reading
  1. Bowlby, J. (1969): Attachment and Loss, Vol. 1: Attachment. London: Hogarth Press. Web
  2. Ainsworth, M. D. S., Blehar, M. C., Waters, E. & Wall, S. (1978): Patterns of Attachment: A Psychological Study of the Strange Situation. Hillsdale, NJ: Erlbaum. DOI
  3. Sroufe, L. A. & Waters, E. (1977): Heart Rate as a Convergent Measure in Clinical and Developmental Research. Merrill-Palmer Quarterly, 23(1), 3–27. DOI
  4. Main, M. & Goldwyn, R. (1984): Predicting Rejection of Her Infant from Mother's Representation of Her Own Experience. Child Abuse & Neglect, 8(2), 203–217.
  5. Van IJzendoorn, M. H. (1995): Adult Attachment Representations, Parental Responsiveness, and Infant Attachment. Psychological Bulletin, 117(3), 387–403.
  6. Mikulincer, M. & Shaver, P. R. (2016): Attachment in Adulthood: Structure, Dynamics, and Change. 2nd ed. New York: Guilford Press. Web