How the Self Develops: Attachment, Development and the Social World
The sense of self does not appear in a single moment. It develops through embodied experience, attachment, joint attention, language, memory, and relationships with people who see and respond to us.
The feeling 'I am me' seems so obvious to an adult that it is easy to treat it as something we are born with in finished form. Developmental psychology suggests a different picture. A child gradually distinguishes their own body from the environment, coordinates attention with others, recognizes themselves in a mirror, uses their name and personal pronouns, talks about the past, and learns how other people see them.
This development is not only an internal process of the brain. It happens in relationships. Adults help children regulate arousal, guide attention, name objects and emotions, reminisce about past events, and create conditions in which exploration feels safe. Repeated experiences of this kind contribute to expectations about self, other people, and relationships.
Attachment is an important part of this story, but it does not mean that one early pattern predicts an adult personality. Meta-analyses find measurable but incomplete stability of attachment across development. Changes in relationships and life circumstances are also associated with changes in attachment. Development therefore includes both continuity and plasticity.
The most accurate answer to how the self develops is therefore relational: the self develops in an individual's body and brain, but through contact with a social world. Autonomy does not emerge in the absence of relationships. It often grows from a sufficiently secure base from which a child can gradually explore, choose, and construct a personal story.
The self is not one thing but several developmental layers
The word self combines several different capacities. At the most basic level is the sense that a particular body is 'mine' and that certain sensations and actions are connected with it. Later, more explicit forms of self-awareness develop: recognizing one's own image, using a personal name and pronouns, describing traits, remembering one's own past, and imagining a future.
It therefore makes little sense to search for one moment when a child suddenly 'gets a self.' Researchers such as Philippe Rochat describe early self-awareness as gradual differentiation followed by increasingly reflective understanding of oneself. Some forms of self-world differentiation are present very early, while a reflective and social self develops across years.
The adult self is not perfectly unitary either. It includes embodied self-experience, memories, goals, roles, relationships, values, and a model of how other people see us. These layers can fit together or come into conflict.
A mirror reveals an important milestone, not the birth of the whole self
One of the best-known developmental tests is mirror self-recognition. In the mark test, a child has an unobtrusive mark placed on the face; if they touch their own face after seeing the reflection, this suggests that they connect the reflected image with themselves. Reviews indicate that this response appears in some children around 15 months and in a majority by about two years.
This is an important cognitive achievement, but it does not show that no sense of self existed before it or that self-awareness is complete afterward. Infants already respond to correspondences among their movements, touch, and visual information, while later development adds much more complex forms of self-understanding.
Cultural and interactional differences can also influence how and when some forms of self-recognition appear. Developmental sequences are useful as long as they are not turned into a rigid universal timetable.
Attachment is a secure base for exploration, not a personality label
Attachment theory begins with the observation that children seek proximity to familiar caregivers when frightened, tired, or uncertain. When a caregiver is sufficiently available and responsive, the relationship can function as a 'secure base': the child moves away to explore and returns when closeness, comfort, or help with regulation is needed.
Research attachment classifications were developed to describe the organization of behavior within a particular relationship and context. They were not designed to declare that someone has an 'avoidant personality,' an 'anxious type,' or a permanently fixed adult romantic style. This matters because popular attachment language often drifts far from how the construct is used in developmental research.
Attachment is therefore better understood as a developing organization of expectations and relationship strategies than as an immutable personality trait.
Sensitive caregiving supports regulation, but it is not the sole cause of development
A central idea in attachment theory is caregiver sensitivity: noticing a child's signals, interpreting them reasonably, and responding appropriately. A large 2024 meta-analysis including more than 22,000 caregiver-child dyads found a positive association between caregiver sensitivity and attachment security of about r = .25. That association is meaningful, but far from perfect.
This corrects two opposite exaggerations. One would say that early relationships hardly matter. The other would make parental behavior the sole determinant of development. In reality, temperament, health, family stress, the wider social environment, other relationships, developmental characteristics of the child, and later life events all participate.
A child is therefore not a blank slate, and a caregiver is not the sole author of personality. Development is a transaction between characteristics of the child and an environment that both change over time.
Joint attention creates a world shared with other minds
Toward the end of the first year, joint attention becomes especially important: the child and another person coordinate attention toward the same object or event. A child may follow an adult's gaze, show an object, or alternate looking between an object and a person as if communicating, 'Look at this too.'
This is more than simply looking in the same direction. Joint attention creates a triadic relation among self, other, and object. The child enters a world in which things are not only perceived but can also be jointly significant. Research links individual differences in early joint attention with later language and social-cognitive development, although the relations are neither simple nor deterministic.
This ability matters for the self because the child increasingly discovers that they have their own attention, other people have theirs, and the two can be coordinated or can diverge.
Language does not merely describe the self; it helps build its story
Once children begin to speak, they gain a new tool for organizing experience. Words allow distinctions among 'I,' 'you,' 'mine,' and 'yours,' between past and future, and among inner states such as wishes, fears, and intentions. But language does not develop in isolation; it develops in conversations with other people.
Conversations about past events are especially important. Meta-analyses find that a more elaborative parental reminiscing style is associated with richer autobiographical memory in children. Through questions, additions, and emotion language, adults help children turn isolated events into more connected narratives.
Over time these narratives contribute to a temporally extended self: not only 'I am here now' but 'I am the person to whom this happened, who is like this, and who intends to become something.' That does not make a life story an objective recording; autobiographical memory, like other memory, is reconstructive.
We begin to include other people's views in our model of ourselves
As development proceeds, children learn not only that other people exist but that others see them, evaluate them, and form expectations about them. That changes the structure of self-awareness. Pride, embarrassment, shame, and guilt require a more reflective relation among one's actions, standards, and the perspectives of other people.
Rochat therefore emphasizes that human self-awareness is deeply social: we experience ourselves not only from within but also through the imagined eyes of others. This can support cooperation, moral learning, and belonging, but it can also contribute to comparison, insecurity, and excessive dependence on external approval.
The social self is therefore not merely a false layer covering an isolated 'true self.' Being a person means living from the beginning in a world of other persons. The developmental challenge is to build a sufficiently stable sense of self that every external judgment does not redefine us completely.
Culture shapes the emphasis of the self, not two simple kinds of humans
The self develops inside cultural practices as well. Societies differ in the emphasis they place on personal choice, family obligations, individual achievement, modesty, hierarchy, emotional expression, or group roles. Such differences influence how children talk about themselves and what counts as a good or mature self.
Yet the simple division into a 'Western independent self' and an 'Eastern interdependent self' is too crude. Large cross-cultural studies find multidimensional combinations of independence and interdependence, with variation also occurring within the same culture, family, and individual.
A more useful phrase is universality without uniformity: humans everywhere develop capacities for self-understanding and social coordination, while environments differ in which forms of autonomy and relatedness they emphasize.
Autonomy does not require the absence of attachment
Everyday language often places dependence and independence at opposite ends of a scale. A developmental view is more interesting. A child may take the risk of exploring precisely because a relationship is available in which they can regain regulation when overwhelmed. In this sense closeness and autonomy are not necessarily competitors.
With age, the form of regulation changes. Children gradually take over capacities that were once heavily supported from outside: waiting, calming, planning, naming feelings, choosing, and setting boundaries. This is not a simple movement from dependence to independence, but from direct regulation in relationship toward increasing self-regulation while retaining the capacity to seek help.
Mature autonomy therefore does not have to mean needing nobody. It can mean being able to act independently without losing the capacity for attachment, cooperation, and mutual dependence.
Early development influences us, but it does not lock us in
The greatest danger in popularizing developmental psychology is turning probabilistic findings into destiny. Meta-analyses of attachment find moderate stability across early childhood and from childhood toward adulthood, not perfect invariance. Over very long intervals stability is lower, and changes in life circumstances are also associated with changes in attachment organization.
Intervention research also shows that caregiver sensitivity and attachment security can improve. That matters: if early relationships were immutable destiny, later experience would have little room to matter. Yet relationships, learning, and self-understanding continue through childhood, adolescence, and adulthood.
The self is therefore neither a completely independent inner object nor a passive product of parents and culture. It is a developmental process: body and brain provide continuity, relationships help shape regulation and expectations, language and memory construct narrative, and society supplies roles and standards. From these layers emerges a person sufficiently connected to their history to experience continuity and sufficiently plastic to revise it.
Sources and further reading
- THY-REALITY — Odnosi kot ogledalo zavesti / Relationships as a Mirror of Consciousness (LOCKED): relationships, self-reflection and interpersonal feedback.
- THY-REALITY — Um, možgani in zavest: tri stvari, ki jih pogosto zamenjujemo / Mind, Brain and Consciousness: Three Things We Often Confuse (LOCKED): conceptual boundaries between brain, mind and conscious experience.
- THY-REALITY — Spomin ni posnetek: kako rekonstruiramo svojo preteklost / Memory Is Not a Recording: How We Reconstruct the Past (LOCKED): reconstructive memory and autobiographical continuity.
- THY-REALITY — Čustva niso nasprotje razuma: kako telo in možgani oblikujejo odločanje / Emotions Are Not the Opposite of Reason (LOCKED): interoception, affect and regulation.
- Rochat, P. — Developmental Roots of Human Self-consciousness. Journal of Cognitive Neuroscience 36 (2024): 1610–1619.
- Koh, J. B. K.; Wang, Q. — Self-development. WIREs Cognitive Science 3 (2012): 513–524.
- Anderson, J. R. — The development of self-recognition: a review. Developmental Psychobiology 17 (1984): 35–49.
- Madigan, S. et al. — Maternal and paternal sensitivity: Key determinants of child attachment security examined through meta-analysis. Psychological Bulletin 150 (2024): 839–872.
- Opie, J. E. et al. — Early childhood attachment stability and change: a meta-analysis. Attachment & Human Development 23 (2021): 897–930.
- Pinquart, M.; Feussner, C.; Ahnert, L. — Meta-analytic evidence for stability in attachments from infancy to early adulthood. Attachment & Human Development 15 (2013): 189–218.
- Groh, A. M. et al. — The significance of attachment security for children's social competence with peers: a meta-analytic study. Attachment & Human Development 16 (2014): 103–136.
- Mundy, P.; Newell, L. — Attention, Joint Attention, and Social Cognition. Current Directions in Psychological Science 16 (2007): 269–274.
- Bradley, H.; Smith, B. A.; Wilson, R. B. — Qualitative and Quantitative Measures of Joint Attention Development in the First Year of Life: A Scoping Review. Infant and Child Development 32 (2023): e2422.
- Wu, Y.; Jobson, L. — Maternal reminiscing and child autobiographical memory elaboration: A meta-analytic review. Developmental Psychology 55 (2019): 2505–2521.
- Fivush, R.; Habermas, T.; Waters, T. E. A.; Zaman, W. — The making of autobiographical memory: intersections of culture, narratives and identity. International Journal of Psychology 46 (2011): 321–345.
- Vignoles, V. L. et al. — Beyond the 'East-West' dichotomy: Global variation in cultural models of selfhood. Journal of Experimental Psychology: General 145 (2016): 966–1000.
- Bakermans-Kranenburg, M. J.; van IJzendoorn, M. H.; Juffer, F. — Less is more: meta-analyses of sensitivity and attachment interventions in early childhood. Psychological Bulletin 129 (2003): 195–215.