Leaving the playground

A Developmental Lens · 18 months to 4 years · Regulation, autonomy, transitions

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 toddler at the bottom of a slide, one hand on it, turned back toward it; an adult crouches behind with a hand held out low.

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.

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).