The preschooler who sets a place at the table for an invisible dragon, narrates long conversations with a companion only they can see, or insists a seat be left empty on the bus for their friend Bramble is not confused about reality. They are exercising one of the most sophisticated cognitive capabilities in early childhood: the ability to create and sustain a detailed mental representation of a being that does not physically exist.
Imaginary companions are so common in early childhood that their absence is no more normal than their presence. Research by developmental psychologist Marjorie Taylor at the University of Oregon found them in around 65 per cent of children studied between ages three and seven.
Healthbooq (healthbooq.com) covers cognitive and social development in the early years, helping parents understand the full range of normal developmental experiences.
The Cognitive Work of an Imaginary Companion
Creating an imaginary friend requires a surprising amount of cognitive sophistication. The child must hold a detailed mental model of the companion's characteristics, preferences, history, and emotional states, update that model across interactions, and maintain it consistently over time. This is essentially a form of advanced symbolic thinking combined with theory of mind, the ability to attribute mental states to others.
The companions are rarely simple. Research reveals that children's imaginary friends have distinct personalities, idiosyncrasies, and preferences that remain consistent across months. The companion might like certain foods, dislike loud noises, be afraid of particular things, or have specific opinions. The child tracks all of this without any external record.
This kind of sustained, detailed imaginative construction is associated with better narrative skills (the ability to construct and tell stories) and more developed understanding of other people's mental states. A child practising "what would Bramble think about this?" is doing early theory of mind work.
What Function Do They Serve?
Several functions have been identified through research, and different companions probably serve different purposes for different children.
Emotional processing is one prominent function. Children use imaginary friends to work through experiences, fears, and social scenarios at a safe remove. The companion might be afraid of the thing the child is afraid of, which allows the child to be the reassuring expert. The companion might make mistakes the child has made, which allows the child to decide how those mistakes should be handled. This is imaginative play in service of emotional regulation and moral reasoning.
Social practice is another function. A child who is only, who has limited social opportunities, or who prefers more controlled social interactions can rehearse conversation, negotiation, and perspective-taking with an imaginary companion who never responds unexpectedly or unkindly.
Some imaginary companions seem to serve primarily as comfort objects, providing a sense of company or security in situations where the child feels uncertain.
Some, interestingly, are described by children as naughty or mischievous, and researchers have noted that a companion who does the wrong thing allows the child to explore forbidden behaviours and their consequences without personal risk.
How to Respond
The most appropriate parental response is engaged but not over-invested. Acknowledging the companion, perhaps playing along occasionally if the child wants this, and not dismissing or ridiculing the relationship is the right approach.
It is not necessary or particularly helpful to pretend the companion is completely real in the same way the child believes it to be: if Bramble is supposedly sitting in the car seat, saying "shall we just check Bramble is comfortable before we buckle up?" is reasonable engagement without literal belief. If a sibling sits on Bramble, treating it as a minor social transgression rather than a major crisis is also appropriate.
Parents who become anxious about the imaginary friend, who interrogate the child repeatedly about it, or who try to argue the companion out of existence, all add unnecessary tension to something that is a natural phase.
Fantasy and Reality
Children who have imaginary companions understand the distinction between fantasy and reality. This may seem counterintuitive given how seriously they take the companion, but research consistently shows that when directly asked, children maintain clear knowledge that the companion is not real in the way other people are.
Their willingness to be playful about this distinction is actually part of the exercise: they know, and they are choosing to pretend otherwise, which is a cognitively more demanding activity than simply being confused.
Imaginary companions generally fade naturally between ages six and eight as the social world expands, as literacy opens new imaginative channels, and as the child's social play with real peers becomes richer and more satisfying.
When to Seek Advice
Imaginary companions do not warrant concern in the normal course of events. The rare situations that do warrant attention are: if the child genuinely cannot distinguish the companion from reality when directly questioned; if the companion is commanding the child to do harmful things; or if the imaginary world is consuming the child's engagement with reality to the point that they are not engaging with real social relationships at all.
Persistent engagement with fantasy figures that does not reduce and does not include real social engagement is one possible early feature of autism, though it presents very differently from typical imaginary companion play. If there are broader developmental concerns alongside unusual fantasy preoccupation, a developmental assessment is appropriate.
Key Takeaways
Imaginary companions are a common and cognitively sophisticated feature of early childhood, present in around 65 per cent of children at some point between ages three and seven according to research by Marjorie Taylor. They reflect advanced symbolic thinking, theory of mind development, and emotional processing capacity. Imaginary friends are associated with better narrative ability, more developed social understanding, and are not linked to loneliness or social difficulty. They are not a sign of psychological problems and warrant intervention only in the extremely rare situation where a child cannot distinguish them from reality.
