DEVELOPMENTAL TRAUMA AND EARLY EXPERIENCES

DEVELOPMENTAL TRAUMA AND EARLY EXPERIENCES When we think about the word trauma, we often imagine an extraordinary event. An accident. A catastrophe. An assault. An event that can be clearly identified. However, there is another way of understanding how difficult experiences can influence our lives. Not only through a single event. But through the process of development itself. Today, neuroscience, developmental psychology, attachment theory, and developmental biology converge around a deeply important idea. We are not born with a fully organized nervous system. The organism develops progressively as it interacts with the world. And this development takes place, from the very beginning, in relationship with other human beings. AN ORGANISM THAT GROWS IN RELATIONSHIP Long before autobiographical memory develops, the organism is already growing within a biological and deeply relational environment that influences how it begins to perceive safety, connection, and the world around it. From prenatal life and throughout the first years, development occurs at an extraordinary pace. The brain establishes millions of connections. Physiological systems continue to organize themselves. Nervous system regulation matures progressively. The ability to recognize emotions, rest, explore, learn, and relate does not emerge in isolation. It develops through everyday encounters with the people around us. This is why we say that the nervous system does not develop in isolation. It develops in relationship. DEVELOPMENT IS A PROCESS, NOT A SINGLE MOMENT When we talk about developmental trauma, we are not referring only to exceptional events. We are also referring to the way the organism learned, day after day, to organize its experience while growing. Early experiences do not completely determine our lives.

But they do participate significantly in the development of expectations about the world, about others, and about ourselves. How does someone respond when I need help? Is it safe to express an emotion? Can I rest? Is there space for my needs? Do I need to remain constantly alert? These questions do not initially appear as conscious thoughts. They gradually take shape through thousands of everyday interactions. And this is precisely what makes human development so extraordinarily complex. It does not depend on a single event. It depends on the collection of experiences that, little by little, teach the organism how to inhabit life. UNDERSTANDING BEFORE ASSIGNING BLAME Talking about childhood trauma, childhood wounds, or complex trauma can awaken very intense emotions. Sometimes sadness appears. Anger. Confusion. Or even the need to find someone responsible. At Sentido Somático, we believe that understanding human development is not about distributing blame. Our parents, caregivers, and communities were also developing organisms, influenced by their own histories, resources, circumstances, and the possibilities available to them for caregiving. Understanding this does not mean minimizing pain. It means widening the perspective. Because when we stop looking only for someone to blame, we begin to understand processes. And understanding processes allows us to accompany the organism's learning with greater depth, greater dignity, and a much more realistic sense of hope. Early experiences are part of our history. But they do not, by themselves, write the rest of our lives. As long as the organism is alive, it retains the extraordinary capacity to learn, reorganize, and continue developing. And perhaps that is one of the most important messages that the science of human development offers us today. EXPERIENCE GIVES MEANING

When we hear the expression developmental trauma, it is easy to imagine that it refers only to something that happened during childhood. However, human development is far more complex than a succession of chronological stages. To develop means to continually learn how to relate to ourselves, to others, and to the world. That is why, when we talk about nervous system development, we are not talking about a process that ends during the first years of life. We are talking about a living, dynamic, and deeply relational system. A LIVING SYSTEM THAT LEARNS THROUGH RELATIONSHIP We are not born with a finished nervous system. We build it through our relationship with the world. Every meaningful experience participates, in some way, in the organization of our organism. From pregnancy through childhood, adolescence, and adulthood, the nervous system continues learning. It does not stop changing simply because we reach a certain age. Neuroplasticity reminds us that learning remains possible throughout life. This is why, at Sentido Somático, we prefer to speak of a living and relational system. Living, because it retains the capacity to reorganize. Relational, because much of this learning takes place through encounters with other people. We do not learn only by observing the world. We learn by being seen. Heard. Accompanied. Comforted. Playing. Exploring. Feeling that someone remains close when we need them. And we also learn when these experiences are missing. SMALL EXPERIENCES ALSO TEACH THE ORGANISM When we think about early experiences, we often look for major events. But development is also deeply influenced by what happens every day. The way someone responds when we cry. The tone of voice used when speaking to us. The possibility of expressing an emotion without feeling shame. Permission to rest. The presence of an available adult when we feel afraid.

Moments of shared play. Repair after conflict. All of these apparently simple experiences participate in the development of the nervous system. Not because each one determines our future. But because, repeated thousands of times, they help the organism answer fundamental questions. Is the world generally safe enough? Do my needs have space? Can I ask for help? Can I make mistakes without losing connection? These answers rarely appear as conscious thoughts. They gradually become ways of inhabiting life. UNDERSTANDING DEVELOPMENT WITHOUT REDUCING IT TO CHILDHOOD Sometimes discovering the importance of early experiences can awaken the feeling that "everything was decided" during the first years of life. Scientific evidence does not support this idea. The early years are enormously important. But they are not a sentence. Development continues. Learning continues. The capacity for reorganization also continues. That is why it is so important to understand that a history of childhood trauma, complex trauma, or difficulties in attachment does not eliminate the possibility of continuing to build new experiences. Early experiences are part of our history. They do not, by themselves, write our destiny. And this distinction brings hope without denying reality. It recognizes the depth of what was lived while, at the same time, recognizing the extraordinary capacity the organism retains to continue developing. Because a living system never stops engaging with experience. And a deeply relational system never stops learning from the relationships it encounters throughout life. Perhaps that is one of the most hopeful ideas that the science of development offers us today. It does not matter how old we are. As long as there is life, there remains the possibility that new experiences can expand the way we inhabit our body, our relationships, and the world. PRACTICE CREATES CHANGE

Understanding developmental trauma can awaken many emotions. For some people, it brings relief. For the first time, they find an explanation for experiences that for years seemed to make no sense. For others, sadness may appear. Anger. Confusion. Or even the feeling of having lost something that never existed. All of these responses are deeply human. And they deserve to be met with respect. However, at Sentido Somático, we believe that understanding development is not about remaining focused only on the past. It is about discovering what is still possible today. THE QUESTION CHANGES When we begin to understand our history, it is natural to ask: What was missing for me? It is an important question. But perhaps it is not the only one. Over time, it can transform into another question that opens the horizon: What does my organism need today in order to continue developing? This question marks a profound shift. It no longer places us only in front of what did not happen. It orients us toward the experiences that can still nourish our lives. Because development does not belong exclusively to the past. It also belongs to the present. DEVELOPMENT CONTINUES THROUGH EVERY MEANINGFUL EXPERIENCE Every time we have an experience in which we feel deeply heard, the organism learns. Every time someone remains with us during a difficult moment without trying to change us, the organism learns. Every time we set a boundary with respect. Every time we rest without guilt. Every time we discover that we can express a need without losing connection. Every time we experience curiosity instead of fear. Each of these experiences continues to participate in our development. Perhaps none of them changes an entire life on its own. But together they begin to build a different story. A story in which the organism no longer learns only through protection.

It also learns through trust. Through care. Through presence. Through connection. And that difference profoundly changes the way we inhabit the world. DEVELOPMENT ALSO NEEDS REPAIR One of the most valuable insights from developmental psychology and attachment theory is the understanding that no human relationship is perfect. There are no mothers, fathers, or caregivers who respond ideally all the time. What supports development is not perfection. It is the possibility of repair. Being able to reconnect after conflict. Feeling that someone recognizes our pain. Experiencing that a relationship can hold difficulty without breaking apart. Repair teaches something extraordinarily important to the nervous system. That relationships can move through difficult moments and still remain places of safety. This idea has profound implications for adult life. Because many times, we do not need perfect relationships. We need relationships in which repair is possible. A PRACTICE FOR THIS WEEK Over the next few days, instead of asking yourself only what difficult experiences shaped your history, try observing something different. Ask yourself: What experiences, however small, help my organism continue developing today? Perhaps it is a conversation in which you feel understood. A walk in nature. An embrace that asks nothing of you. A moment of silence. A somatic yoga class. A mindful breathing practice experienced without pressure. Or simply discovering that today you can treat yourself with a kindness you may not have known for a long time. At Sentido Somático, we are not trying to reconstruct a perfect childhood. We are seeking to cultivate present-day experiences that allow the organism to continue expanding its possibilities. Because development did not end when we stopped being children. It continues every time life offers us an experience capable of teaching us a new way of being in relationship with ourselves, with others, and with the world.

RESEARCH CONTINUES Over the past several decades, developmental science has profoundly transformed our understanding of human beings. Today we know that development depends neither solely on genetics nor exclusively on experience. It emerges from the continuous dialogue between biology, relationships, and environment. Each influences the others. And all of them continue interacting throughout life. Research into developmental trauma, attachment, nervous system regulation, neuroplasticity, and somatic healingcontinues to grow and refine our understanding of how the organism learns to organize itself through early experiences and how it can continue developing within different contexts. WHAT WE KNOW TODAY There is broad recognition that the nervous system is a living and deeply relational system. We are not born with a finished nervous system. We build it through our relationship with the world. We also know that early experiences have an enormous influence on the organization of the organism. But that influence does not equal an unchangeable destiny. Neuroplasticity, learning, and development continue throughout life. And perhaps this is one of the most hopeful messages science offers us today. RELATIONSHIP REMAINS A PLACE OF DEVELOPMENT Throughout the previous articles, we have returned again and again to the same idea. And it is worth remembering here. The organism learns. It protects life. It anticipates what it expects to encounter. Now we can add one more idea. The organism also continues to develop through relationship. Many experiences that support a greater sense of safety have a deeply relational component. A relationship in which we can be heard. A relationship where repair is possible after conflict. A space where our emotions do not need to be hidden in order to preserve love. A community where we can belong without abandoning ourselves.

These experiences do not erase the past. But they can profoundly expand the possibilities from which the organism continues to learn. This is why, at Sentido Somático, we understand relationship as one of the great contexts of human development. Not because all answers are found in another person. But because we are beings whose biology has always been deeply intertwined with the presence of others. A HOPE THAT CONTINUES TO GROW Perhaps one of the greatest contributions of contemporary science is reminding us that development is never a completely closed chapter. As long as there is life, there will continue to be new experiences capable of enriching the way the organism understands safety, rest, connection, and presence. That is why we say that development does not require perfection. It requires experiences that can continue teaching the organism that life can also be a place of connection, repair, and growth. Not because every difficult experience disappears. But because the organism discovers that today there are relationships, contexts, and resources that may not have been available before. At Sentido Somático, we deeply believe in this possibility. Not because we imagine a life free from uncertainty or pain. But because we trust in the extraordinary human capacity to continue learning while alive. And perhaps that is one of the most beautiful definitions of development. Not a path that ends when we reach adulthood. But a capacity that remains open as long as life continues. Because a living and relational system never stops encountering new experiences. And every encounter retains the potential to continue expanding the way we inhabit our body, our relationships, and the world. REFERENCES SYSTEMATIC REVIEWS AND REVIEW ARTICLES As part of the editorial methodology of Sentido Somático, this article draws primarily on systematic reviews, review articles, scientific consensus statements, and university-level reference texts addressing human development, developmental neuroscience, attachment theory, developmental trauma, and neuroplasticity. The main areas of reference include:

Developmental Neuroscience and Learning • Nature Reviews Neuroscience — Brain development, plasticity, and learning. • Annual Review of Psychology — Cognitive, emotional, and regulatory development. • Annual Review of Neuroscience — Nervous system maturation and learning. • Developmental Review — Human development and early experiences. • Development and Psychopathology — Development, adversity, and adaptation. • Current Opinion in Psychology — Attachment, emotional regulation, and socioemotional development. • World Psychiatry — Developmental trauma and mental health. University-Level Reference Books • The Developing Mind. • Affect Regulation and the Origin of the Self. • Handbook of Attachment. • Principles of Neural Science. • From Neurons to Neighborhoods. Key Authors • Daniel J. Siegel — Interpersonal neurobiology and development. • Allan N. Schore — Affective regulation and early development. • Mary Ainsworth — Attachment and caregiver sensitivity. • John Bowlby — Attachment theory. • Patricia K. Kuhl — Early learning and development. • Jack P . Shonkoff — Early childhood development and health policy. Complementary Clinical Models • Stephen Porges — Autonomic regulation and Polyvagal Theory. • Bessel van der Kolk — Developmental trauma and the body. • Pat Ogden — Sensorimotor Psychotherapy. • Peter A. Levine — Somatic Experiencing. SENTIDO SOMÁTICO EDITORIAL LOG Article 27 - Module II: Understanding Trauma Title: Developmental Trauma and Early Experiences. Last scientific review: July 2026. EDITORIAL PRINCIPLES APPLIED This article integrates knowledge from developmental neuroscience, developmental psychology, attachment theory, developmental biology, and

learning theory to understand how early experiences participate in the organization of the nervous system and relational life. Throughout the article, developmental trauma is not presented as a sentence or as a single explanation for adult life. Instead, a process-oriented perspective is offered in which development remains possible through neuroplasticity, learning, and new experiences. Concepts such as childhood trauma, healing childhood wounds, complex trauma, nervous system regulation, somatic therapy, somatic healing, and emotional well-being are incorporated naturally, expanding their meaning through scientific understanding and a deeply human perspective. In keeping with the philosophy of Sentido Somático, this article reminds us that understanding our earliest experiences is not about remaining anchored in them, but about expanding our capacity to continue developing. PRINCIPLES OF SENTIDO SOMÁTICO We are not born with a finished nervous system. We build it through our relationship with the world. The nervous system is a living and relational system. Development is not simply about growing. It is about gradually learning how to inhabit life. Development does not require perfection. It requires experiences that can continue teaching the organism that life can also be a place of connection, repair, and growth. Early experiences are part of our history. Present experiences participate in our development. Development begins in relationship, continues through relationship, and finds in relationships one of its greatest possibilities for continued growth. These ideas express one of the deepest convictions of Sentido Somático. We do not understand development as a period that ends in childhood. We understand it as a living process that accompanies the whole of existence. Every meaningful experience continues to teach something to the organism. Every safe relationship can expand the way we inhabit life. Every repair reminds us that a relationship does not need to be perfect in order to support growth. That is why we are not trying to reconstruct an ideal childhood. We are seeking to cultivate present experiences that allow the organism to continue developing. We believe this is one of the deepest forms of dignity. Because it gives human beings back something that no difficult experience can completely take away. The possibility of continuing to grow.

And perhaps that is one of the most hopeful messages contemporary science can offer us. We are not defined only by what we have lived through. We are also shaped, every day, by what we continue to learn, by the relationships we cultivate, and by the experiences we choose to inhabit with presence. As long as there is life, development continues. And as long as development continues, there will always be the possibility of discovering new ways of meeting ourselves, others, and the world. That is the horizon Sentido Somático seeks to cultivate: an understanding of human beings in which scientific knowledge and lived experience come together to remind us that growth is not a chapter of the past, but a possibility that accompanies us throughout life.