Why do children need to take risks in play?
Because avoiding all risk removes the mechanism by which children learn to assess risk — and the evidence increasingly suggests that heavily risk-averse environments produce worse outcomes rather than safer ones.
What risky play means. Researchers, notably Ellen Sandseter, have categorised it into recognisable types: great heights, high speed, dangerous tools, dangerous elements such as water and fire, rough and tumble, getting lost or playing out of adult sight, and — added later — vicarious risk, watching others.
Crucially, this means play with a real possibility of injury, not simulated risk. Children actively seek it out, across cultures, which is itself evidence that it serves a purpose.
What it appears to develop:
Risk assessment. Judging what you can and cannot do requires attempting things near the edge of your ability and receiving feedback. A child who has never fallen has no calibration.
Physical competence — balance, coordination, spatial judgement, and knowing where your body is.
Emotional regulation. Sandseter and Kennair proposed that risky play functions partly as anti-phobic exposure — experiencing manageable fear and mastering it, in the same way graded exposure treats phobia. Consistent with this, some research associates restricted risky play with higher later anxiety.
Resilience and confidence, from having coped with something difficult.
The counterintuitive safety finding. Reviews of the evidence, including work informing UK play safety guidance, have concluded that overly cautious environments do not reduce serious injury and may increase it — children take unplanned risks in unchallenging environments, and lack the skills to handle risk when they meet it.
The distinction that matters is risk versus hazard. A risk is something a child can see and assess — a high climbing frame. A hazard is a danger they cannot perceive — a rotten branch, a broken fixing, a cord that could strangle. Remove hazards; permit risks. This is now the standard framing in play safety guidance.
Supervise from a distance where possible.