The Shape of Security

What Attachment Looks Like Across Neurologies

Attachment theory began with an observation so simple it is easy to underestimate. Children who have a secure base, a person they can count on to be available and responsive, explore the world more freely, recover from distress more readily, and build more resilient relationships over time than children who do not (Ainsworth et al., 1978; Bowlby, 1982; Bretherton, 1992). The secure base is not a luxury. It is a developmental necessity, the relational condition that makes growth possible rather than merely survival (Bowlby, 1982; Cassidy & Shaver, 2016).

John Bowlby, who gave us the concept, and Mary Ainsworth, who gave us the research to support it, were describing something universal (Ainsworth et al., 1978; Bowlby, 1982; Bretherton, 1992). Every human nervous system needs a secure base. Every human being, regardless of neurotype, is trying to build one. What the field has been slower to recognize is that security has a shape, and that shape looks different depending on the neurological architecture of the person building it. What attachment looks like when it is present, what it looks like when it is not, and what it requires from the environment in order to form at all: these are not fixed across neurologies (Cossette-Côté et al., 2022; Rutgers et al., 2004; Teague et al., 2017). They vary in ways that matter enormously, both for how we understand autistic development and for how we build relationships that actually work.

That difference is what this post is about.

Attachment Capacity and Attachment Display

The single most important distinction in understanding attachment across neurologies is the difference between attachment capacity and attachment display. These are not the same thing, and collapsing them has caused a great deal of confusion, both in research and in the lives of autistic people and the people who care about them (Capps et al., 1994; Dissanayake & Crossley, 1996; Sigman & Mundy, 1989; Sigman & Ungerer, 1984).

Attachment capacity is the underlying need for connection, security, and a reliable other. It is the drive toward a secure base. It is present in autistic people as fully and as urgently as it is present in non-autistic people. The research on this point is now clear enough to state without qualification: autistic children form attachments, autistic adults seek closeness, and autistic people across the lifespan need and are capable of genuine relational security (Capps et al., 1994; Dissanayake & Crossley, 1996; Rutgers et al., 2004; Sigman & Mundy, 1989; Sigman & Ungerer, 1984; Teague et al., 2017). The earlier clinical assumption that autism precluded attachment was not a nuanced position that subsequent research complicated. It was simply wrong (Rutgers et al., 2004; Teague et al., 2017).

Attachment display is the visible shape that the attachment need takes: how a person signals distress, seeks comfort, uses a caregiver or partner as a secure base, and responds to reunion after separation (Ainsworth et al., 1978; Bowlby, 1982; Main et al., 1985). And this is where neurology matters enormously, because the displays that attachment theory was built around, the proximity seeking, the visible distress at separation, the comfort seeking through physical closeness and eye contact and verbal reassurance, were observed in and normed around non-autistic children (Ainsworth et al., 1978; Main et al., 1985). When autistic children and adults express the same underlying needs through different channels, those expressions are frequently misread, underestimated, or missed entirely (Bottema-Beutel et al., 2021; Jaswal & Akhtar, 2019; Milton, 2012).

An autistic child who becomes very still when distressed is not a child who is not distressed. An autistic child who seeks comfort through a familiar routine rather than physical proximity is not a child who does not need comfort. An autistic adult who processes difficulty by withdrawing into solitude or a consuming interest is not a person who does not need support. These are attachment displays in a different shape, bids for security that look unfamiliar to observers trained on non-autistic developmental patterns, and the consequences of missing them accumulate in ways that matter (Bottema-Beutel et al., 2021; Jaswal & Akhtar, 2019; Milton, 2012; Sasson et al., 2017).

What Secure Attachment Looks Like in Non-Autistic Development

For people whose development follows the non-autistic pathway, secure attachment tends to build through the same embodied, continuous feedback loop that characterizes non-autistic social development from infancy (Ainsworth et al., 1978; Bowlby, 1982; Bretherton, 1992). The secure base is experienced and maintained through mutual gaze, facial attunement, reciprocal vocalization, physical proximity, and the rapid back-and-forth of emotional co-regulation (Ainsworth et al., 1978; Cassidy & Shaver, 2016). The non-autistic person signals distress through visible emotional display, seeks comfort through direct proximity and verbal or physical reassurance, and experiences reunion with an attachment figure as regulating and restoring (Ainsworth et al., 1978; Main et al., 1985).

Secure attachment in non-autistic development also tends to produce a particular internal shape: what researchers call felt security, a background sense of relational safety that does not require constant confirmation because it has been confirmed reliably enough to become an internalized expectation (Bowlby, 1982; Main et al., 1985; Mikulincer & Shaver, 2016). The securely attached non-autistic person moves through the world with a kind of relational confidence that is not arrogance but groundedness, knowing in their body and below the level of conscious thought that the people who matter to them will be there when needed (Bowlby, 1982; Mikulincer & Shaver, 2016).

When the non-autistic developmental pathway produces insecure attachment, it tends to do so through disruptions in exactly this feedback loop, and the shape of the insecurity reflects the shape of the disruption (Ainsworth et al., 1978; Bowlby, 1982; Main et al., 1985). A caregiver who is inconsistently available produces anxious attachment, a hypervigilance to relational cues and a chronic uncertainty about whether the secure base will hold (Ainsworth et al., 1978; Mikulincer & Shaver, 2016). A caregiver who is consistently emotionally unavailable produces avoidant attachment, a learned suppression of attachment needs and a practiced self-reliance that carries its own particular loneliness (Ainsworth et al., 1978; Mikulincer & Shaver, 2016). Both patterns are adaptations, reasonable responses of a developing nervous system to the relational environment it has encountered, and both leave their mark on the working model the person carries forward (Bowlby, 1982; Main et al., 1985).

What Secure Attachment Looks Like in Autistic Development

Secure attachment in autistic development is built from the same underlying need, and toward the same destination, but through different channels and with a different visible shape (Capps et al., 1994; Dissanayake & Crossley, 1996; Rutgers et al., 2004; Teague et al., 2017). Research confirms that roughly half of autistic children assessed in structured attachment studies are classified as securely attached, which means secure attachment is not only possible in autistic development but common (Cossette-Côté et al., 2022; Rutgers et al., 2004; Teague et al., 2017). What varies is what it looks like and what it requires.

For autistic people, the secure base may be experienced and expressed less through the continuous embodied exchange of facial and vocal attunement and more through the reliable presence of a specific person, the predictability of routines and environments, the freedom to engage with regulating interests without withdrawal of care, and the experience of being understood without having to perform comprehensibility (Bottema-Beutel et al., 2021; Jaswal & Akhtar, 2019; Milton, 2012; Teague et al., 2017). A caregiver who learns to read autistic attachment signals accurately, who recognizes shutdown as distress rather than defiance, parallel presence as connection rather than distance, and retreat into a special interest as self-regulation rather than rejection, is providing exactly what a secure base requires: reliable availability, accurately calibrated to this nervous system's way of needing it (Cossette-Côté et al., 2022; Rutgers et al., 2004; Teague et al., 2017).

The internal shape of secure attachment in autistic development may also differ from the felt security described in non-autistic research. Because autistic people do not rely on the same continuous stream of embodied social feedback to regulate their sense of relational safety, secure attachment may be experienced less as a background hum of felt connection and more as a stable confidence in specific relationships and specific environments (Cossette-Côté et al., 2022; Milton, 2012; Teague et al., 2017). It may be quieter, less visible, and less dependent on moment-to-moment social attunement, without being any less real or any less foundational to development (Capps et al., 1994; Dissanayake & Crossley, 1996; Rutgers et al., 2004).

When Attachment Becomes Insecure: The Autistic Experience

Understanding what insecure attachment looks like in autistic development requires holding two things at once. The first is that insecure attachment in autistic people is more common than in the general population, a finding that appears consistently in the research (Rutgers et al., 2004; Teague et al., 2017). The second is that this elevated rate is not a consequence of autism itself. It is a consequence of what autism has encountered (Cossette-Côté et al., 2022; Milton, 2012; Teague et al., 2017).

Autistic people develop insecure attachment through the same mechanisms that produce it in non-autistic people, disrupted, inconsistent, or inaccurately calibrated caregiving, but with an additional layer of vulnerability that non-autistic people do not face in the same way (Cossette-Côté et al., 2022; Rutgers et al., 2004; Teague et al., 2017). Because autistic attachment displays do not match non-autistic expectations, because the signals autistic people send are frequently misread or missed, the feedback loop that builds secure attachment is disrupted not through lack of care but through lack of translation (Bottema-Beutel et al., 2021; Jaswal & Akhtar, 2019; Milton, 2012; Sasson et al., 2017). Caregivers who love their autistic children deeply may still fail to recognize their attachment bids, not because they are unresponsive but because they are listening for signals on a frequency they have not yet learned to tune to (Cossette-Côté et al., 2022; Teague et al., 2017).

The result is a particular shape of attachment disruption that sits alongside but is distinct from the patterns Ainsworth described. It is not simply anxious or avoidant or disorganized in the classic sense, though it may resemble all of those (Ainsworth et al., 1978; Main et al., 1985; Mikulincer & Shaver, 2016). It is the shape produced by a nervous system that has been reaching for connection through its available channels and finding, repeatedly, that those channels are not being received (Milton, 2012; Rutgers et al., 2004; Teague et al., 2017). Over time that experience teaches something about the reliability of the relational world, and what it teaches tends toward wariness rather than confidence (Bowlby, 1982; Main et al., 1985).

There is also something that the research is beginning to name more clearly: the overlap between insecure attachment presentations and autistic experience can make the two genuinely difficult to distinguish, and misreading one as the other causes harm in both directions (Rutgers et al., 2004; Teague et al., 2017). Autistic distress that is relational in origin can be attributed to neurology and left unaddressed. Neurological difference can be misread as relational damage and treated in ways that miss the point entirely (Bottema-Beutel et al., 2021; Jaswal & Akhtar, 2019; Milton, 2012). Holding both possibilities at once, with curiosity rather than premature certainty, is what accurate clinical and relational understanding requires.

Masking and the Conditional Bond

There is one more dimension of attachment in autistic development that deserves its own consideration, because it shapes the attachment experience in ways that have no direct parallel in non-autistic development.

Masking, the effortful construction and performance of non-autistic social behavior, is many things: a survival strategy, a response to chronic misunderstanding, a learned adaptation to environments that have made clear they will not meet autistic people where they are (Bradley et al., 2021; Cage & Troxell-Whitman, 2019; Pearson & Rose, 2021). But it is also, at its root, an attachment behavior. When an autistic person masks, they are doing what the attachment system demands when it has learned that authentic expression does not reliably produce connection: they are changing their shape in order to preserve the relationship (Bowlby, 1982; Pearson & Rose, 2021).

The cost of this is not simply exhaustion, though the research is clear that camouflaging carries significant mental health consequences (Bradley et al., 2021; Cage & Troxell-Whitman, 2019; Hull et al., 2019; Zhuang et al., 2023). The deeper cost is structural. A relationship maintained through masking is a relationship in which genuine attachment security is not fully available, because genuine attachment security requires being known (Bowlby, 1982; Mikulincer & Shaver, 2016). It requires the experience of bringing the actual self into contact with another person and finding that the actual self is welcomed. When the relationship is conditioned on a performance, that experience is structurally limited regardless of how warm or committed the relationship otherwise is (Evans et al., 2024; Livingston et al., 2019; Pearson & Rose, 2021).

This means that for many autistic people, particularly those who have spent years in environments that required masking as the price of belonging, insecure attachment may not originate only in early caregiving (Bradley et al., 2021; Cage & Troxell-Whitman, 2019; Pearson & Rose, 2021). It may have been built, layer by layer, through the accumulated experience of connection that felt conditional, closeness that required self-suppression, and belonging that was never quite unconditional enough to become a secure base in the full sense (Evans et al., 2024; Hull et al., 2019; Zhuang et al., 2023). The shape of that insecurity is distinct from what early caregiving disruption produces, and it requires its own understanding.

That is not a fixed condition. The working model can be revised (Bowlby, 1982; Main et al., 1985; Mikulincer & Shaver, 2016). But revising it requires understanding what built it, and building something genuinely different in its place.

The Same Need, Differently Expressed

What attachment theory has always been describing, beneath all of its categories and classifications, is a single human need: the need to matter to someone, to be known and held by another person, to have a place in the world that is reliably yours (Bowlby, 1982; Cassidy & Shaver, 2016; Mikulincer & Shaver, 2016). That need does not vary by neurotype. What varies is the shape it takes, the channels through which it is expressed, the conditions under which it can be met, and the form of the disruption when it is not (Cossette-Côté et al., 2022; Milton, 2012; Teague et al., 2017).

Recognizing that autistic and non-autistic people are expressing the same underlying need through different visible patterns is not a small reframe (Bottema-Beutel et al., 2021; Jaswal & Akhtar, 2019; Milton, 2012). It changes what we look for, what we respond to, and what we build. It means that the autistic child whose attachment bid arrives in an unfamiliar form is not a child who does not need connection (Capps et al., 1994; Dissanayake & Crossley, 1996; Rutgers et al., 2004; Teague et al., 2017). It means that the autistic adult whose insecure attachment has been shaped by years of conditional acceptance is not a person who is incapable of security (Bradley et al., 2021; Evans et al., 2024; Pearson & Rose, 2021). It means that the relational distance that can develop between autistic and non-autistic people in close relationship is not evidence of incompatibility but of a translation problem that has not yet been solved (Milton, 2012; Sasson et al., 2017).

The next post in this series takes up exactly that translation problem: how the working model each person builds from their attachment experiences travels with them into adult relationships, and what it takes to begin revising it toward security.

This is Series II — Attachment Across Neurologies: How Trust, Security, and Relationship Maps Form Differently

This was post 2.

1. The First Thing We Need: How Trust Forms Across Neurologies
2. The Shape of Security: What Attachment Looks Like Across Neurologies
3. The Map We Carry: How Attachment Experience Becomes the Working Model
4. When Two Maps Meet: Attachment in Neurodiverse Relationships


References

Ainsworth, M. D. S., Blehar, M. C., Waters, E., & Wall, S. N. (1978). Patterns of attachment: A psychological study of the Strange Situation. Lawrence Erlbaum Associates.

Bottema-Beutel, K., Kapp, S. K., Lester, J. N., Sasson, N. J., & Hand, B. N. (2021). Avoiding ableist language: Suggestions for autism researchers. Autism in Adulthood, 3(1), 18–29. https://doi.org/10.1089/aut.2020.0014

Bowlby, J. (1982). Attachment and loss: Vol. 1. Attachment (2nd ed.). Basic Books. Original work published 1969.

Bradley, L., Shaw, R., Baron-Cohen, S., & Cassidy, S. (2021). Autistic adults’ experiences of camouflaging and its perceived impact on mental health. Autism in Adulthood, 3(4), 320–329. https://doi.org/10.1089/aut.2020.0071

Bretherton, I. (1992). The origins of attachment theory: John Bowlby and Mary Ainsworth. Developmental Psychology, 28(5), 759–775. https://doi.org/10.1037/0012-1649.28.5.759

Cage, E., & Troxell-Whitman, Z. (2019). Understanding the reasons, contexts and costs of camouflaging for autistic adults. Journal of Autism and Developmental Disorders, 49(5), 1899–1911. https://doi.org/10.1007/s10803-018-03878-x

Capps, L., Sigman, M., & Mundy, P. (1994). Attachment security in children with autism. Development and Psychopathology, 6(2), 249–261. https://doi.org/10.1017/S0954579400004569

Cassidy, J., & Shaver, P. R. (Eds.). (2016). Handbook of attachment: Theory, research, and clinical applications (3rd ed.). Guilford Press.

Cossette-Côté, F., Bussières, E.-L., & Dubois-Comtois, K. (2022). The association between maternal sensitivity/availability and attachment in children with autism spectrum disorder: A systematic review and meta-analysis. Current Psychology, 41(11), 8236–8248. https://doi.org/10.1007/s12144-021-02227-z

Craig, A. D. B. (2009). How do you feel—now? The anterior insula and human awareness. Nature Reviews Neuroscience, 10(1), 59–70. https://doi.org/10.1038/nrn2555

Dissanayake, C., & Crossley, S. A. (1996). Proximity and sociable behaviours in autism: Evidence for attachment. Journal of Child Psychology and Psychiatry, 37(2), 149–156. https://doi.org/10.1111/j.1469-7610.1996.tb01386.x

Evans, J. A., Krumrei-Mancuso, E. J., & Rouse, S. V. (2024). Autistic masking in relation to mental health, interpersonal trauma, authenticity, and self-esteem. Autism in Adulthood, 6(2), 229–240. https://doi.org/10.1089/aut.2023.0051

Gallese, V. (2007). Before and below “theory of mind”: Embodied simulation and the neural correlates of social cognition. Philosophical Transactions of the Royal Society B: Biological Sciences, 362(1480), 659–669. https://doi.org/10.1098/rstb.2006.2002

Haltigan, J. D., Ekas, N. V., Seifer, R., & Messinger, D. S. (2011). Brief report: Attachment security in infants at-risk for autism spectrum disorders. Journal of Autism and Developmental Disorders, 41(7), 962–967. https://doi.org/10.1007/s10803-010-1107-7

Hull, L., Mandy, W., Lai, M.-C., Baron-Cohen, S., Allison, C., Smith, P., & Petrides, K. V. (2019). Development and validation of the Camouflaging Autistic Traits Questionnaire. Journal of Autism and Developmental Disorders, 49(3), 819–833. https://doi.org/10.1007/s10803-018-3792-6

Jaswal, V. K., & Akhtar, N. (2019). Being versus appearing socially uninterested: Challenging assumptions about social motivation in autism. Behavioral and Brain Sciences, 42, Article e82. https://doi.org/10.1017/S0140525X18001826

Livingston, L. A., Shah, P., & Happé, F. (2019). Compensatory strategies below the behavioural surface in autism: A qualitative study. The Lancet Psychiatry, 6(9), 766–777. https://doi.org/10.1016/S2215-0366(19)30224-X

Main, M., Kaplan, N., & Cassidy, J. (1985). Security in infancy, childhood, and adulthood: A move to the level of representation. Monographs of the Society for Research in Child Development, 50(1/2), 66–104. https://doi.org/10.2307/3333827

Mikulincer, M., & Shaver, P. R. (2016). Attachment in adulthood: Structure, dynamics, and change (2nd ed.). Guilford Press.

Milton, D. E. M. (2012). On the ontological status of autism: The “double empathy problem.” Disability & Society, 27(6), 883–887. https://doi.org/10.1080/09687599.2012.710008

Pearson, A., & Rose, K. (2021). A conceptual analysis of autistic masking: Understanding the narrative of stigma and the illusion of choice. Autism in Adulthood, 3(1), 52–60. https://doi.org/10.1089/aut.2020.0043

Rutgers, A. H., Bakermans-Kranenburg, M. J., van IJzendoorn, M. H., & van Berckelaer-Onnes, I. A. (2004). Autism and attachment: A meta-analytic review. Journal of Child Psychology and Psychiatry, 45(6), 1123–1134. https://doi.org/10.1111/j.1469-7610.2004.t01-1-00305.x

Sasson, N. J., Faso, D. J., Nugent, J., Lovell, S., Kennedy, D. P., & Grossman, R. B. (2017). Neurotypical peers are less willing to interact with those with autism based on thin slice judgments. Scientific Reports, 7, Article 40700. https://doi.org/10.1038/srep40700

Sigman, M., & Mundy, P. (1989). Social attachments in autistic children. Journal of the American Academy of Child & Adolescent Psychiatry, 28(1), 74–81. https://doi.org/10.1097/00004583-198901000-00014

Sigman, M., & Ungerer, J. A. (1984). Attachment behaviors in autistic children. Journal of Autism and Developmental Disorders, 14(3), 231–244. https://doi.org/10.1007/BF02409576

Teague, S. J., Gray, K. M., Tonge, B. J., & Newman, L. K. (2017). Attachment in children with autism spectrum disorder: A systematic review. Research in Autism Spectrum Disorders, 35, 35–50. https://doi.org/10.1016/j.rasd.2016.12.002

Zhuang, S., Tan, D. W., Reddrop, S., Dean, L., Maybery, M., Magiati, I., & Whitehouse, A. J. O. (2023). Psychosocial factors associated with camouflaging in autistic people and its relationship with mental health and well-being: A mixed methods systematic review. Clinical Psychology Review, 101, Article 102257. https://doi.org/10.1016/j.cpr.2023.102257