Children are not born knowing how to manage their feelings. This is not a parenting failure, a developmental problem, or something that will simply sort itself out with time and maturity. It is a neurological fact — one with direct and practical implications for every adult who lives or works alongside a child.
The capacity for emotional self-regulation — the ability to notice what one is feeling, tolerate the intensity of it, and respond in a way that does not overwhelm oneself or others — is not present at birth. It develops gradually, across the whole of childhood and well into adolescence, through a process that depends fundamentally on the quality of something that happens between the child and the adults around them. That process is called co-regulation. And the research on what it is, how it works, and what happens when it is absent or disrupted is considerably more specific and more practically significant than the word itself tends to suggest.
What Co-Regulation Actually Is
Co-regulation refers to warm, receptive, and supportive interactions between caregiver and child that provide guidance and modulation of the child’s emotions, behaviours, and thoughts. It is not the same as calming a child down — though calming is one of its outcomes. It is not the same as reassurance, distraction, or the management of difficult behaviour — though all of these may be involved. It is something more fundamental: the process by which the child’s developing nervous system uses the regulated state of a trusted adult’s nervous system as a reference point for its own return to calm.
Children are born with immature brains which means they have less capacity for self-regulation compared to adults. During infancy, co-regulation by caregivers is essential. As children grow, they can increasingly apply their own emotion regulation strategies — assuming those strategies have been built through the repeated experience of being co-regulated. The child’s capacity for self-regulation does not arrive fully formed at a particular developmental milestone. It is built, gradually and relationally, from the outside in — through the accumulated experience of having a regulated adult alongside them in moments of emotional difficulty.
This is the clinical and developmental reality that makes co-regulation in children not simply a parenting technique but a fundamental mechanism of emotional development.
What the Research Shows
The research on co-regulation in children has grown substantially in recent years — and its findings are consistent across methodologies, populations, and developmental stages.
A 2024 systematic review confirmed that co-regulation during challenging situations is strongly linked to improved self-regulation in children — especially when the caregiver-child relationship is marked by flexibility, mutual responsiveness, and dyadic synchrony. The review confirmed that these early relational experiences shape long-term mental health, influencing how children cope with stress, build relationships, and navigate adversity throughout life. Critically, the review also found that in high-risk environments, excessive physiological synchrony between a dysregulated parent and child can amplify rather than soothe distress — emphasising that regulated caregiving depends on the adult’s own emotional balance.
This last finding deserves particular attention. Co-regulation is not simply the adult’s attempt to calm the child. It is a bidirectional, neurobiological process in which the nervous systems of caregiver and child are in genuine synchrony — influencing each other in real time, through voice, facial expression, body posture, touch, and the particular quality of presence that attunement produces. When the adult is regulated, this synchrony moves the child’s nervous system toward regulation. When the adult is dysregulated, the same synchrony can move the child’s nervous system toward greater activation. The caregiver’s internal state is not incidental to the co-regulation process. It is the process.
A 2024 video analysis study published in Early Child Development and Care, examining co-regulation in dyadic parent-child relationships across children aged two to eight, identified the basic elements of effective co-regulation as warm, receptive, and supportive interactions that provide guidance and modulation — and confirmed that parental attunement — specifically, the adult’s sensitivity in tuning into the child’s emotional state — is the key element that determines whether the interaction regulates or further dysregulates. Research published in Affective Science confirmed that caregivers play a central role in children’s emotion regulation development — and that the specific strategies caregivers use in daily life are significant predictors of how children develop regulatory capacity over time.
A growing body of research indicates that the ability to regulate one’s own emotions is crucial for overall wellbeing and health, as well as the quality of social relationships and academic and professional success. Co-regulation in children, consistently provided across the early years, is the foundational developmental experience from which this capacity grows.
The Neuroscience of Co-Regulation
Understanding co-regulation in children at the neurological level makes the clinical picture considerably clearer — and makes the practical implications considerably more urgent.
The developing nervous system is, in the early years of life, operating primarily from the subcortical regions — the brainstem and the limbic system — that govern the basic regulatory functions of arousal, threat-detection, and the stress response. The prefrontal cortex — responsible for the executive functions of impulse control, emotional modulation, perspective-taking, and rational evaluation — is still very much under construction. It does not complete its development until the mid-twenties.
This means that children literally cannot regulate themselves independently in the way adults can — because the neurological infrastructure that adult self-regulation depends on has not yet been built. They are not choosing to be dysregulated. They are neurologically dependent on the regulated presence of a trusted adult to bring their own nervous system back to baseline.
Stephen Porges’ polyvagal theory provides the most precise neurobiological framework for understanding how this works. The ventral vagal state — the state of social engagement, safety, and genuine connection — is accessed primarily through the signals that the social environment provides: the prosody of voice, the expressiveness of the face, the quality of eye contact, the rhythm of interaction. When a caregiver offers these signals from a regulated state — a calm voice, a warm face, a steady presence — they are directly activating the child’s ventral vagal system and supporting the return to regulation. When the caregiver is themselves dysregulated, those same signals communicate threat rather than safety — and the child’s nervous system responds accordingly.
Emerging research, including findings from the 2024 systematic review, highlights the role of neural attunement — the synchronisation of brain activity between caregiver and child during moments of emotional interaction — as a specific mechanism through which co-regulation operates. This is not metaphor. The brains of an attuned caregiver and a child in distress are genuinely, measurably synchronising — and the direction of that synchronisation depends on the regulatory state of the adult.
How Co-Regulation Builds Self-Regulation
The developmental trajectory from co-regulation to self-regulation is not a sudden transition. It is a gradual internalisation — a process by which the child takes in, across thousands of small co-regulatory interactions, the regulatory strategies that were first provided from the outside and gradually makes them their own.
The child who has repeatedly experienced a trusted adult naming their feeling, remaining calm in the face of it, and staying present until the storm has passed, is building, from those repeated experiences, an internal model of what emotional regulation feels like, looks like, and is possible. They are building what researchers call a regulatory template — an internal working model of emotion management that is derived directly from the quality of the co-regulatory relationship.
Research underscores the lasting impact of co-regulation. It enables the child to experience not only relief from immediate distress but also builds a template for handling future stressors — strengthening long-term emotional regulation and resilience. This template is not a cognitive understanding. It is a felt, embodied, neurologically encoded pattern — one that the child will draw on, automatically and without deliberate effort, every time a difficult feeling arrives.
This is why the research on adverse childhood experiences shows such consistent associations between early relational disruption and later difficulties with emotional regulation, mental health, and relationship quality. When the co-regulatory experiences of early childhood are absent, insufficient, or replaced by dysregulated interactions that amplify rather than soothe distress, the regulatory template that should be building does not form in the way that healthy development requires. And the consequences — in anxiety, in behavioural difficulty, in the impaired capacity to form and maintain close relationships — are measurable and lasting.
What Effective Co-Regulation Looks Like in Practice
Co-regulation in children does not require specialist training, a clinical setting, or a specific technique. It requires three things that any adult can provide — though providing them consistently, particularly in the moments when the child is most dysregulated and the adult’s own regulatory resources are most stretched, is considerably more demanding than it sounds.
Presence — the quality of being genuinely, attentively, non-distractedly there — is the first and most fundamental element. The child’s nervous system registers the adult’s presence not primarily through words but through the non-verbal signals that presence produces: eye contact, body orientation, the quality of attention. An adult who is physically present but emotionally elsewhere is not providing co-regulation. They are providing proximity without attunement — and the research confirms that proximity without attunement does not produce the same regulatory outcomes.
Regulation — the adult’s own emotional stability in the face of the child’s distress — is the second element, and the one most directly supported by the 2024 systematic review’s finding about physiological synchrony. The adult who can remain calm — not detached, not dismissive, but genuinely regulated — while the child is dysregulated is providing the most powerful co-regulatory signal available. Their calm nervous system becomes, in the most literal neurobiological sense, the reference point toward which the child’s nervous system moves.
Attunement — the quality of being specifically, accurately responsive to what this particular child is experiencing in this particular moment — is the third element. Attunement is not the same as agreement, validation, or permission. It is the accurate reflection of the child’s emotional state that communicates: I see what is happening in you. I am not alarmed by it. And I am going to stay here with you until it passes. That communication, received through the non-verbal channels of the nervous system before it is ever processed as language, is the mechanism through which co-regulation actually works.
Co-Regulation in Children and The Play Therapy Toolbox
Throughout The Play Therapy Toolbox: 123 Simple Play Therapy Activities and Therapeutic Games Supporting Every Stage of Child Development from Age 3 to 12, co-regulation appears not as a supplementary recommendation but as the foundational mechanism underlying every activity in the book. Every parent guidance note, every instruction to sit beside the child, every prompt to model the exercise alongside rather than directing from a distance — all of these are expressions of the same core understanding that the research on co-regulation in children has now confirmed: that the adult’s regulated presence is not the context for the therapeutic work. It is the therapeutic work.
The activities across the Toolbox are structured to support co-regulation at every developmental stage — from the rhythm and physical presence that regulates the infant and toddler nervous system, through the imaginative and narrative activities that co-regulate through shared story and play, to the more cognitively mediated approaches that become available as the child’s prefrontal cortex gradually matures and the internalisation of regulatory capacity deepens. Every activity comes with step-by-step guidance on how to conduct the session and exactly what to say — because the research confirms that the adult’s specific verbal and non-verbal behaviour during the activity is a direct determinant of its regulatory effectiveness.
Before You Begin: A Note on the Adult’s Own Regulation
Before attempting any co-regulatory play activities with a child who is experiencing significant distress, I would sincerely recommend attending to your own regulatory state first. The 2024 systematic review’s finding — that a dysregulated caregiver can amplify rather than soothe a child’s distress through physiological synchrony — is one of the most practically important findings in the co-regulation literature. A regulated adult is not simply a helpful addition to the therapeutic encounter. They are its primary mechanism. If you are yourself in a state of significant stress, anxiety, or dysregulation, the most therapeutically significant thing you can do for the child is to regulate yourself first — through whatever means are available to you — before attempting to co-regulate them.
Three Things Worth Knowing
Your calm is not passive. It is an active intervention.
The most important shift any adult can make in their understanding of co-regulation in children is this: remaining calm in the face of a child’s distress is not simply the absence of a reaction. It is a positive, active, neurobiologically precise intervention — one that directly activates the child’s ventral vagal system and supports the return to regulation. When you stay regulated alongside a dysregulated child, you are not doing nothing. You are doing the most therapeutically significant thing available to you in that moment.
Co-regulation builds what self-regulation will later depend on.
Every co-regulatory interaction — every time a trusted adult names a feeling, stays calm in its presence, and remains there until it passes — is building the internal regulatory template that the child will draw on for the rest of their life. The child who has thousands of these interactions across the early years is not simply better regulated in those moments. They are building the neurological infrastructure for a lifetime of emotional regulation. The investment is cumulative, and it compounds.
You are the most important tool in the room.
The activities in the Play Therapy Toolbox are the structure within which co-regulation happens. You are the co-regulation itself. Every instruction in the book to sit beside the child, to model the exercise, to remain present and warm and genuinely curious about what the child is experiencing, is a specific application of the research finding that the adult’s attuned, regulated presence is the single most powerful protective factor available to children under stress. The activities are the invitation. Your regulated nervous system is the reason the invitation is safe enough to accept.
Available Now for $5.99 — For a Limited Time
If this exploration of co-regulation in children gave you a sense of why the adult’s presence — regulated, warm, and genuinely attuned — is not simply a backdrop to the therapeutic work but the work itself, The Play Therapy Toolbox gives you 123 activities built on exactly that understanding. The ebook is available now on Amazon at $5.99 for a limited time — with immediate access to 123 activities and 75+ full-colour printable worksheets for children aged 3 to 12.
Play is not preparation for life. It is life — in its most honest, most essential, most healing form.
Disclaimer: This article is intended as an educational and supportive resource for parents, caregivers, educators, and mental health professionals. It is not intended to diagnose, treat, or replace professional therapeutic or medical care. If a child is experiencing significant emotional, behavioural, or developmental difficulties, please seek guidance from a qualified mental health professional.
Rostislava Buhleva-Simeonova is a psychologist and game design specialist. She has worked with children, adults, and the elderly within various therapeutic programmes over the past eight years, all the while providing the much-needed playful twist that art and gamified experiences can bring to this sometimes uneasy setting. But it wasn’t until the birth of her daughter, Aurora, that this work took on an even deeper personal meaning. With her academic and real-life experience, honed through numerous trainings and sessions, she is currently authoring books and articles in the field of child psychology and development, offering expertise in art and play therapy to guide parents and caregivers, as well as professionals in the fields of social work and mental health, throughout various pivotal moments in children’s lives. Last but not least, all of her books have been “peer-reviewed” by her daughter, who testifies to the efficiency of these methods.
References
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Kostøl, E. M. F., & Kovač, V. B. (2024). Co-regulation in dyadic parent-child relationships: A video analysis of well-functioning interactions. Early Child Development and Care, 194(1), 72–86. https://doi.org/10.1080/03004430.2023.2282357
Miller, A. (2025). Starting early: How caregivers can support their children’s emotion regulation. In-Mind Magazine, 10(64). https://www.in-mind.org/article/starting-early-how-caregivers-can-support-their-childrens-emotion-regulation
Porges, S. W. (2017). The pocket guide to the polyvagal theory: The transformative power of feeling safe. W. W. Norton & Company.
Psychologs. (2025). Co-regulating with your child: A guide for parents. https://www.psychologs.com/co-regulating-with-your-child-a-guide-for-parents/
Redfern, S. (2026). Managing your feelings. In Reflective parenting (Chapter 4). Taylor & Francis.
Redfern, S. (2026). Helping children with their feelings. In Reflective parenting (Chapter 6). Taylor & Francis.
Rutherford, H. J., Wallace, N. S., Laurent, H. K., & Mayes, L. C. (2015). Emotion regulation in parenthood. Developmental Review, 36, 1–14. https://doi.org/10.1016/j.dr.2015.01.004
Zero to Three. (2025). Your calm is their calm: Co-regulation strategies for infants and toddlers. https://www.zerotothree.org