There is a gap between what parents are told about play and what the research actually says — and it is worth closing, because the gap has consequences.
What parents are typically told: play is important for creativity and imagination. It helps children socialise. It gives them an outlet for energy. All of this is true, and none of it is the most important thing the research shows.
What the research actually says is that symbolic play — the play of pretend and make-believe, of characters and stories, of imaginary worlds inhabited with complete seriousness — is the primary developmental context in which children build the capacity to understand inner experience. Their own and everyone else’s. And that capacity — to know what is happening inside, to imagine what is happening inside another person, to make sense of the relationship between feelings and behaviour — is the single most consistent predictor of positive outcomes across every major model of child therapy.
Play is not preparation for the important work. It is the important work.
What Symbolic Play Actually Is
Symbolic play — also called pretend play, imaginative play, or make-believe play — is the capacity to use one thing to represent another: to let a banana stand in for a telephone, a cardboard box become a spaceship, or a child become a character in a story they are simultaneously authoring and inhabiting. It emerges, in most children, between approximately eighteen months and two years of age — and its arrival is one of the most significant cognitive events of early childhood.
The emergence of symbolic play marks the development of what developmental psychologists call representational capacity: the ability to hold a mental representation of something that is not concretely present. This is the same capacity that underlies language, memory, imagination, and eventually all abstract thought. The child who picks up a banana and holds it to their ear is not simply playing. They are demonstrating that they have separated the symbol from the thing it represents — and that they can operate within a representational space that is explicitly different from the concrete reality in front of them.
This representational capacity is the cognitive foundation on which almost everything else in child development rests. Symbolic play and child development are inseparable — not because play causes development in a linear, mechanistic sense, but because play is development: it is the activity through which the developing mind builds and exercises the cognitive and emotional tools it will depend on for the rest of its life.
What Symbolic Play Develops
The research on what symbolic play specifically develops in children is now extensive enough to be specific — and the range of what it builds is considerably wider than the popular association of play with creativity and imagination tends to suggest.
Understanding other minds is perhaps the most important developmental outcome of symbolic play — and the one with the most direct implications for therapeutic work with children. A 2025 overview published in Frontiers in Psychology confirmed that symbolic play is a facilitator for the development of the child’s ability to understand inner experience — providing a safe environment for exploring different aspects of one’s own experience and fostering the child’s ability to imagine the inner experiences of play characters, their thoughts, beliefs, intentions, and feelings. The paper confirmed that the therapeutic relationship and the child’s capacity to understand their own and others’ minds are the most consistent predictors of outcome across all major models of child psychotherapy — including CBT, psychodynamic, and attachment-based approaches.
This is a finding of considerable clinical significance. The single capacity most predictive of positive outcomes across every model of child therapy is precisely the capacity that symbolic play most directly builds. Play is not a route to therapeutic work. For children, it is the therapeutic work — the primary developmental context in which the understanding of minds is built, exercised, and gradually deepened.
Emotional regulation is built through symbolic play in ways that are both direct and indirect. Directly: the child who plays out a frightening scenario in the safety of the imaginary, who sends their character through a difficult situation and brings them safely through it, is doing genuine emotional processing — approaching anxiety-generating material at the regulated distance of fiction. Indirectly: symbolic play requires and builds the executive functioning capacities — impulse control, working memory, cognitive flexibility — that underlie emotional regulation at the neurological level. A systematic review published in Early Child Development and Care confirmed the power of symbolic play for cognitive development — specifically noting its contributions to executive functioning, which is the cognitive substrate of emotional self-regulation.
Language and communication develop in direct relationship to symbolic play. A 2025 systematic review confirmed that symbolic play improved vocabulary, grammatical complexity, and communication in children aged three to five — a finding consistent with decades of developmental research confirming the bidirectional relationship between symbolic capacity and language acquisition. The child who narrates their play, who gives voice to multiple characters, who constructs dialogue and story structure, is doing intensive language development work simultaneously with their emotional and cognitive development.
Social competence and empathy emerge from the repeated practice of taking other perspectives — inhabiting other characters, imagining other inner states, negotiating shared narratives with play partners. A 2025 study published in Early Childhood Education Journal, grounded in Vygotsky’s sociocultural theory, confirmed that play provides a developmentally appropriate and meaningful context for fostering social-emotional skills — allowing children to explore emotions, solve problems, and develop empathy through social interaction.
Cognitive development across multiple domains — problem-solving, creativity, planning, abstract thinking — is supported by symbolic play in ways that more structured, directed activities cannot replicate. A 2025 evaluation of symbolic play strategies in early childhood education confirmed that symbolic play significantly impacts cognitive development, including executive functions, creative thinking, and problem-solving skills — and that guided symbolic play produced the strongest outcomes.
Why Symbolic Play Is the Language of Therapeutic Change
A 2024 study published in PLOS One examined the relationship between pretend play and children’s emerging capacity to understand minds — and found that pretend play is a signature behaviour of early childhood that reflects the child’s emerging symbolic function, enabling the interpretation of social signals, language development, and emotion understanding. The study confirmed that parental sensitivity to the child’s play — the quality of the adult’s attuned engagement with the child’s symbolic world — was a significant predictor of the richness and sophistication of the child’s pretend play, establishing a direct link between the relational environment and the developmental outcome.
This finding sits at the heart of why play therapy works — and why symbolic play specifically is the right medium for therapeutic work with children. Therapeutic change in children requires, above all else, the development of the capacity to understand inner experience: to notice what one is feeling, to understand what others are feeling, to make sense of the relationship between inner states and outer behaviour, and to imagine that the same situation can be experienced differently by different people. These are not abstract cognitive skills. They are the specific capacities that symbolic play builds — and that the therapeutic relationship, conducted through the medium of symbolic play, most directly activates.
The 2025 Frontiers in Psychology overview confirmed that the child’s capacity to understand minds, and the therapeutic relationship, are the most consistent predictors of outcome across all major models of child therapy. This is not a finding specific to one theoretical orientation or one therapeutic modality. It is a cross-model finding — one that holds across CBT, psychodynamic, attachment-based, and humanistic approaches — and it points directly to symbolic play as the primary vehicle for building the foundational capacity on which all effective therapeutic work with children depends.
What Happens When Symbolic Play Is Restricted
Understanding the developmental significance of symbolic play and child development requires also understanding what happens when play is restricted — because the consequences are both specific and significant.
Children whose access to symbolic play is limited — by over-scheduling, by excessive screen exposure, by environments that prioritise direct instruction over imaginative engagement, or by the developmental disruptions that trauma and adversity produce — show consistent deficits in the capacities that symbolic play builds. Reduced empathy, weaker emotional regulation, lower language complexity, less sophisticated problem-solving, and greater difficulty in the social domain — these are the documented outcomes of play-impoverished development, and they represent precisely the profile most commonly seen in children who come to therapeutic attention.
The American Academy of Pediatrics, in its clinical report reaffirmed in 2025, stated that play is not frivolous — it enhances brain structure and function and promotes executive function. The same report noted that the most effective way to support healthy development across all domains is to protect and support children’s access to genuine, imaginative, adult-engaged play — not as a reward for completing more serious work, but as the serious work itself.
Symbolic Play and Child Development: What This Means for Therapeutic Practice
The research on symbolic play and child development has direct and specific implications for how therapeutic work with children is most effectively conducted — and for why play-based approaches consistently outperform verbal, cognitively directed approaches for the age groups that depend on play as their primary cognitive and emotional processing medium.
A child who is struggling emotionally, behaviourally, or relationally is almost always a child whose capacity to understand inner experience — their own and others’ — has been disrupted, underdeveloped, or overwhelmed. And the most direct route to building or restoring that capacity is the same route through which it is naturally developed: symbolic, imaginative, emotionally engaged play, within the safety of a warm, attuned, consistently present adult relationship.
This is the theoretical foundation of the Play Therapy Toolbox — and it is why the activities across the book are built around symbolic play, narrative, role-play, and creative expression rather than direct instruction or verbal processing. Not because these approaches are more enjoyable than alternatives, though many children find them so, but because they are the developmentally appropriate medium through which the capacities most predictive of therapeutic change are most reliably built.
Symbolic Play and Child Development: The Play Therapy Toolbox
The Play Therapy Toolbox: 123 Simple Play Therapy Activities and Therapeutic Games Supporting Every Stage of Child Development from Age 3 to 12 was built on exactly the understanding that the research on symbolic play and child development confirms: that the most powerful therapeutic tool available for children is not a technique, a protocol, or a theoretical model. It is the child’s own symbolic capacity — their ability to enter an imaginary world, to inhabit other perspectives, to give their inner experience a form it can be looked at and worked with — activated and supported within the safety of a warm, attuned, genuinely engaged adult relationship.
The 123 activities across the book are structured to build, exercise, and deepen this symbolic capacity at every developmental stage — from the earliest symbolic play of the three-year-old, through the increasingly complex narrative and role-play capacities of the school-age child, to the more abstract, metaphorical, and self-reflective play of the pre-adolescent. Every activity comes with a therapeutic rationale grounded in peer-reviewed research, step-by-step guidance on how to conduct the session and exactly what to say, questions to use with the child, and a parent guidance note — because the research confirms that the adult’s attuned engagement with the child’s symbolic world is itself a developmental intervention, and the parent who understands this is a parent who can deliver it.
Before You Begin: A Note on Professional Support
The research on symbolic play and child development confirms that structured, intentional, adult-engaged play activities produce genuine developmental and therapeutic benefits. Before using the Toolbox with a child who is experiencing significant emotional, behavioural, or developmental difficulties, I would sincerely recommend consulting a qualified mental health professional. The activities are designed to be accessible to non-specialist adults — but they are most effective as part of a broader support plan that includes professional guidance where it is needed.
Three Things Worth Knowing
Symbolic play is serious work.
The most important shift any adult can make in relation to a child’s play is to stop seeing it as what happens between the important things and start seeing it as the important thing itself. The child absorbed in symbolic play is not wasting time. They are building the neural infrastructure for empathy, emotional regulation, language, social competence, and the understanding of minds that all genuine human connection depends on. Protecting and participating in that play is not an indulgence. It is one of the most developmentally significant investments available to any adult who loves a child.
The adult’s engagement matters more than the activity.
The research on symbolic play and child development consistently shows that the quality of adult engagement with the child’s play is a significant moderator of developmental outcome. A child who plays in the presence of a genuinely interested, attuned, responsively engaged adult develops faster, plays more richly, and builds the capacity to understand minds more reliably than a child who plays alone or alongside an adult who is physically present but emotionally elsewhere. You do not need to lead the play. You need to be genuinely in it.
You are the most important tool in the room.
The Play Therapy Toolbox provides the activities, the structure, and the therapeutic rationale. You provide the relational environment that makes those activities therapeutically meaningful. A child who plays symbolically in the presence of a warm, attuned, consistently present adult who takes their imaginary world seriously is a child who is receiving, through that play, the most powerful developmental and therapeutic intervention available. The activities are the invitation. Your genuine engagement is the reason the invitation works.
Available Now for $5.99 — For a Limited Time
If this exploration of symbolic play and child development gave you a sense of why play is not preparation for the important things but the most important thing 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.
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.
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.
References
American Academy of Pediatrics. (2018, reaffirmed 2025). The power of play: A pediatric role in enhancing development in young children. Pediatrics, 142(3), e20182058. https://doi.org/10.1542/peds.2018-2058
Calderón Masa, C. F., et al. (2025). Symbolic play and its influence on social-emotional development in early childhood education. DISCE. Revista Científica Educativa y Social, 2(1), 91–104. https://doi.org/10.69821/DISCE.v2i1.37
Gelo, O. C. G., et al. (2025). Specific and common therapeutic factors in psychodynamic psychotherapy for children and adolescents: An overview. Frontiers in Psychology, 16, 1525849. https://doi.org/10.3389/fpsyg.2025.1525849
González Vázquez, M. E. (2025). Evaluation of the impact of symbolic play strategies on the cognitive development of children in early childhood education. TPM, 32(S2). https://tpmap.org/submission/index.php/tpm/article/download/303/186
Kangas, J., Harju-Luukkainen, H., & Palonen, T. (2021). The power of play: A systematic review of symbolic play and cognitive development. Early Child Development and Care, 191(7–8), 1140–1154.
Stuart, A. C., et al. (2024). The significance of parental mentalizing for four-year-old children’s solitary pretend play. PLOS ONE, 19(1), e0297671. https://doi.org/10.1371/journal.pone.0297671
Strasser, J., et al. (2025). Integrating social-emotional learning through play: Perspectives from early childhood educators. Early Childhood Education Journal. https://doi.org/10.1080/02568543.2025.2567504
Wieder, S. (2017). The power of symbolic play in emotional development through the DIR lens. Topics in Language Disorders, 37(3).