Boundaries & Tantrums · 21 months to 5 years

Use 'Long Turns' Instead of Forced Sharing

Let them finish their turn. Children who choose to share go on to share more than children who are made to.

The moment

Your child snatches a toy train right out of a younger sibling's or playmate's hands, shouting 'MINE!', and both children immediately start crying.

What to say

Four ways to say it. Research doesn't rank these against each other, so pick the one that sounds like you.

Emotion Coaching · Return the snatched toy + Validate the waiting child's wish

"You really wanted that train right now! Your brother was still using it, so I'm giving it back to him. Let's ask him: 'Can I have a turn when you're done?'"

Holds the fairness boundary while coaching the frustration of waiting.

Montessori / Respectful · Protect uninterrupted work ('Long Turns')

"Maya is working with the train right now. It will be available as soon as she puts it back on the rug. Let's pick another car while we wait."

Respects concentration and teaches children that their turn will also be protected.

Connection First · Invite problem-solving between the two kids

"We have two kids who both want one blue train! Should we build a station for it together, or trade when the song ends?"

Builds cooperative conflict-resolution skills.

Choices & Logic · Let them solve it together—or the toy takes a break

"I'm going to hold the train for a second. Let me know when the two of you figure out a fair plan for taking turns with it!"

Prevents the parent from becoming a full-time referee.

What's going on

Understanding 'mine' and 'yours' develops through the toddler years, and children who grasp it share more readily (Brownell 2013). Being made to hand over a toy mid-play doesn't teach sharing; it teaches that toys can vanish.

What it looks like day to day

Shouting 'MINE!' over every toy a sibling touches, snatching items, or pushing when another child gets too close.

What the research supports

Preschoolers who made a real choice to share later shared more with someone new than children who were told to share (Chernyak & Kushnir 2013). Two-year-olds share readily when the setup supports it, and understanding ownership goes with sharing more (Brownell 2013). Young children treat 'who had it first' as the rule in disputes (Ross, Conant & Vickar 2011), so backing that rule feels fair to them.

Where it's your call

When a toy is snatched, calmly return it to the child who had it first while coaching the waiting child on how to ask for the next turn.

Sources

Each one links to the paper. How we check them is on the sources page.

Chernyak N et al. (2013) · Psychological Science
Preschoolers who made a costly choice to share with a puppet later shared more with a new character than children who were required to share or whose sharing cost them nothing.
Laboratory experiments · Preschool-age children, two experiments
PubMed(opens in a new tab)
Ross H et al. (2011) · New Directions for Child and Adolescent Development
In disputes over toys, young children gave priority to ownership over current possession, whereas their parents tended not to back the owner's claim.
Observational studies of sibling and peer conflict · Sibling and peer disputes observed at home and in the laboratory
PubMed(opens in a new tab)
Brownell CA et al. (2013) · Child Development
Two-year-olds shared toys and food with an adult playmate readily and spontaneously; 18-month-olds shared only after repeated, explicit cues. Children who understood ownership shared more, independent of age and language ability.
Cross-sectional laboratory study · 51 children aged 18 and 24 months
PubMed(opens in a new tab)

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This guide is parenting education, not medical advice. The scripts are examples to adapt, not tested treatments. If you're worried about your child's health or development, talk to your pediatrician.