Leaving the playground
An ordinary moment every parent of a toddler knows, read through the Developmental Lens: what we see, what may be developing, what that changes, and what to notice next time.

A happy childabsorbed in play
An announcement“Time to go.”
A hand on the slidethe run back
Not observableintent. We see the sequence, not the reason.
Switching rules“play” to “go” is hard at three
The brakes arrive laststopping an action under way develops slowly
Autonomy“no” is part of becoming a person
Your own statelate, watched, tired: it shapes the return
Conceptual modelcapacities still being built, not a diagnosis
The hand held lowclose, steady, not grabbing
Say what is next“two more slides, then lunch”
Next timenotice what came just before
What are we actually seeing?
It is time to leave the playground. You give the two-minute warning, then say “time to go”. Your two-and-a-half-year-old runs back to the slide. When you reach for a hand, they drop to the ground and cry. Ten minutes ago, everything was fine. Nothing about the playground changed. The plan did.
What is observable
- A happy child, absorbed in play.
- An announcement from an adult.
- A run in the opposite direction.
- A body that goes to the floor.
- Crying that is loud and fast.
What is not observable
Intent. From the outside, nobody can see whether this is “defiance”, “manipulation” or “being tired”. We can see the sequence, and the sequence is the clue.
Most common from about 18 months to 3 years and still common at 4, with wide variation between children and between days.
What might be developing beneath the surface?
Four processes can be read in this one moment. None is a flaw. Each is a skill still being built.
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Switching rules is hard at this age.
In a classic card-sorting game, most three-year-olds keep sorting by the first rule even after they are told the new one. By four or five, most children switch easily. Leaving the playground asks for a similar switch, from “play” to “go”, while the first plan is still running, and in a moment that matters far more to a child than a card game.
Well established in laboratory tasks. Zelazo, 2006; Zelazo and colleagues, 2003.
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The brakes are the last part to arrive.
Inhibitory control, the ability to hold back or stop an action, relies partly on prefrontal brain systems that grow fastest in the preschool years and keep developing long after. Strong feelings and fast reactions are there from early on. The ability to hold them back comes later.
Well established. Diamond, 2013.
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Autonomy is the work of this age.
Between roughly 18 months and 3 years, a child is discovering that they are a separate person with preferences of their own. “No” is part of becoming a person with a will of one’s own, and it often shows up right when an adult’s plan takes over.
Supported; the size of specific effects varies. Brownell and colleagues, 2007; Erikson, 1950.
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Once overwhelmed, reasoning does not land.
When a child is overwhelmed, the thinking parts of the brain are much harder to reach, so words and reasons tend not to land until they have calmed down. Young children borrow a calm adult to get there.
Supported. The two-zone picture of the brain is a conceptual model, not a scan. Diamond, 2013.
Taught in Module 4 of the toddler class.
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You are inside the system too.
Being late, being watched by other parents, being tired: your own state shapes how you respond, and research on co-regulation suggests that how calmly you respond matters, not only what you say.
Supported. Waters and colleagues, 2014; see “When your own nervous system is the variable”.
What can this understanding change?
None of this makes leaving easy. It changes what you are responding to.
What might you notice next time?
- What came before the hard moment: the warning, the walk to the gate, or the car seat?
- Which part of the transition was hardest, and was it the same part as last time?
- Did advance notice change anything, for your child or for you?
- What helped you stay steady, and what made it harder?
These are observations, not scores. The point is curiosity about one child, not a verdict.
A conceptual reading of a familiar moment. It describes processes, not what any particular child is thinking.
The labels on the photograph, as text
- Observe: A happy child: absorbed in play; An announcement: “Time to go.”; A hand on the slide: the run back; Not observable: intent. We see the sequence, not the reason.
- Understand: Switching rules: “play” to “go” is hard at three; The brakes arrive last: holding back an action develops slowly; Autonomy: “no” is part of becoming a person; Your own state: late, watched, tired: it shapes the return; Conceptual model: capacities still being built, not a diagnosis.
- Respond: The hand held low: close, steady, not grabbing; Say what is next: “two more slides, then lunch”.
- Reflect: Next time: notice what came just before.
Sources
Each line on this page was checked against the primary sources and approved by Matthew McArthur in October 2026. The note under each card names its source and how strong the evidence is.
- Andreadakis, E., Joussemet, M., and Mageau, G. A. (2019). How to support toddlers’ autonomy: socialization practices reported by parents. Early Education and Development, 30(3), 297–314. doi:10.1080/10409289.2018.1548811
- Brownell, C. A., Zerwas, S., and Ramani, G. B. (2007). “So big”: the development of body self-awareness in toddlers. Child Development, 78(5), 1426–1440. doi:10.1111/j.1467-8624.2007.01075.x
- Cote, C. A., Thompson, R. H., and McKerchar, P. M. (2005). The effects of antecedent interventions and extinction on toddlers’ compliance during transitions. Journal of Applied Behavior Analysis, 38(2), 235–238. doi:10.1901/jaba.2005.143-04
- Diamond, A. (2013). Executive functions. Annual Review of Psychology, 64, 135–168. doi:10.1146/annurev-psych-113011-143750
- Erikson, E. H. (1950). Childhood and Society. Norton. (Theory.)
- Laurin, J. C., and Joussemet, M. (2017). Parental autonomy-supportive practices and toddlers’ rule internalization. Motivation and Emotion, 41(5), 562–575. doi:10.1007/s11031-017-9627-5
- Morris, A. S., Silk, J. S., Steinberg, L., Myers, S. S., and Robinson, L. R. (2007). The role of the family context in the development of emotion regulation. Social Development, 16(2), 361–388. doi:10.1111/j.1467-9507.2007.00389.x
- Potegal, M., Kosorok, M. R., and Davidson, R. J. (2003). Temper tantrums in young children: 2. Tantrum duration and temporal organization. Journal of Developmental & Behavioral Pediatrics, 24(3), 148–154. doi:10.1097/00004703-200306000-00003
- Wakschlag, L. S., et al. (2012). Defining the developmental parameters of temper loss in early childhood. Journal of Child Psychology and Psychiatry, 53(11), 1099–1108. doi:10.1111/j.1469-7610.2012.02595.x
- Waters, S. F., West, T. V., and Mendes, W. B. (2014). Stress contagion: physiological covariation between mothers and infants. Psychological Science, 25(4), 934–942. doi:10.1177/0956797613518352
- Zelazo, P. D. (2006). The Dimensional Change Card Sort (DCCS): a method of assessing executive function in children. Nature Protocols, 1(1), 297–301. doi:10.1038/nprot.2006.46
- Zelazo, P. D., Müller, U., Frye, D., Marcovitch, S., et al. (2003). The development of executive function in early childhood. Monographs of the Society for Research in Child Development, 68(3), vii–137. doi:10.1111/j.0037-976x.2003.00260.x
- From Little Onward toddler class, Modules 1, 3 and 4 (class scripts).