"Come on, share — you're a big boy!" is a line every sandpit hears. The child grips his bucket, another child's mother is watching, your own face goes red. Sharing is a skill that appears in children later than adults demand it, and one that forcing spoils rather than builds. Below is not a list of tips but one scene taken apart: what to find out before acting, what to choose between, what each choice leads to, and what research knows about it.
The scene
A sandpit. A three-year-old has both arms wrapped around his bucket; another toddler is pulling at the handle. The toddler's mother is looking at you. "Share — you're a big boy!" — "Mine!" — and both are in tears.
One and the same scene is several different situations. They differ not in how loud the "mine!" is but in whose thing it is, how old the child is and who is really demanding that he share. The scene is an illustration, not a real family.
What to find out before acting
- Whose thing is it? His own bucket from home and a shared spade at the playground are different forks. A child is not obliged to share what is his; shared things go in turns, and the adult sets the turns. The same rule works at home between siblings — see the case on jealousy between children.
- How old is he? At two, children share if the other person asks clearly and there is time; at three or four the overwhelming majority behave "selfishly", and that is a developmental norm (see the research below); a sense of "fair shares" forms by seven or eight. Demanding at three what appears at seven is pointless.
- Has he only just started playing — or has he held it for half an hour? "Hasn't finished" and "never lets go" are different things. The first passes by itself; the second is about turns.
- Who is demanding that he share — the child or you? More often than not the other toddler has already moved on and it is you who is demanding — because his mother is watching. Half the tension in this scene is your embarrassment, not his greed.
- Has he had the experience of "gave it — never got it back"? A child whose toys were "shared" without him and went missing holds on tighter — and rightly so.
The forks: what you can do and what each one costs
If the thing is his and he has only just started playing
Action. Do not force it. Say out loud — to the child and to the other mother: "it's his bucket, he's still playing; when he's done, they can swap." Help the other toddler find something else to do, or suggest a trade: "if you want his bucket, offer your car." The right not to share what is his is the same right that protects him when someone pulls at his things.
Cost. Awkwardness in front of other adults. It is yours, and it is not worth paying for it with the child.
What to watch. Whether he shares by himself ten minutes later, when nobody is demanding it. He usually does — generosity appears where it is not wrenched out.
If the thing is shared — or he is holding on to it too long
Action. Turns, and the adult runs them: "your turn until I count to twenty, then his." For a small child, tie it to an action rather than minutes: "three buckets of sand — then we pass it on." Accompany the handover with words and give him back the right to the next turn: "now him, then you again." Do not take it away silently and do not shame him at the handover.
Cost. Tears at the moment of handing over, the first few times. The rule of turns is learned by repetition, not explanation.
What to watch. Whether he accepts the turn when it repeats, whether he starts saying "then you" himself. That is the sign the rule has become his.
If he is five to seven and never shares — or takes things from others
Action. A conversation in a calm moment, not in the sandpit: at this age a sense of "fair shares" already exists, so lean on it — "how do we split it so it's fair for both?" Give a choice, not an order: "will you give one of yours or keep both?" — a choice rather than a command grows generosity (see the research below). Do not pay for sharing with a sweet and do not praise "what a kind boy": a reward for kindness turns it into merchandise. If he takes things from others — protect the other child first, talk afterwards; on things taken without asking there is a separate case.
Cost. Patience, and giving up the quick levers — shame and reward — that work today and spoil tomorrow.
What to watch. Whether he shares on his own initiative at least sometimes. How his relationships with peers are going: greed at seven is more often about anxiety or loneliness than about character.
There are no ready-made lines here on purpose: every family has its own words. All three forks mean the same thing: what is personal is his, what is shared goes in turns, and generosity grows out of choice, not command.
What may be behind it
- The thing is part of "me". At two or three, "mine" is the first thing a child can call his own in the world, and he is defending not the bucket but himself.
- He hasn't finished. To an adult, half an hour with a bucket seems a lot. For the child the game has only just begun.
- Pressure and shame. The harder the adult demands, the tighter the grip: giving it up now means losing.
- The experience of loss. Toys that were "shared" without asking and never came back teach a child to hold on.
- Jealousy. If everything at home has to be shared with a younger sibling, the playground is the one place where a thing need not be given up.
What research says
At three or four most children are "selfish"; by seven or eight they are for equal shares
Who and on whom. Ernst Fehr, Helen Bernhard and Bettina Rockenbach, 2008, Nature. Children aged 3–8 chose how to split treats between themselves and another child.
What they found. At 3–4 the overwhelming majority of children chose in their own favour; at 7–8 most preferred a split that removed inequality — whether it favoured them or the other child. Aversion to inequality grew strongly between three and eight, and children shared more readily with members of their own group than with outsiders.
What it does not prove. A laboratory game with treats in one country. The study does not say a three-year-old cannot be taught to share — it says expecting him to split things equally "out of conscience" is premature.
Choice grows generosity; an order does not
Who and on whom. Nadia Chernyak and Tamar Kushnir, 2013, Psychological Science. Three- and four-year-olds.
What they found. Children were asked to give something to someone in need: some were given a costly choice (giving what they could have kept), some a costless choice, and some simply an instruction to give. Most gave in every condition, but with a new person afterwards those who had earlier made the hard choice themselves shared more.
What it does not prove. A small laboratory experiment, a short horizon. But the direction matches practice: "will you give one or keep both?" works better than "give it".
A reward for helping reduces the wish to help — already at twenty months
Who and on whom. Felix Warneken and Michael Tomasello, 2008, Developmental Psychology. Twenty-month-old children.
What they found. Toddlers who received a material reward for helping were afterwards less likely to help than those who had simply been praised or not rewarded at all. The authors call this the overjustification effect: children's helping is intrinsically motivated from the start, and an external reward undermines that motivation.
What it does not prove. This is about helping, not sharing, and about very young children. But the mechanism is the same: "you shared — here's a sweet" teaches sharing for sweets.
Two-year-olds do share — if they understand "mine and yours" and are asked clearly
Who and on whom. Celia Brownell and colleagues, 2013, Child Development. 51 children aged 18 and 24 months; six tasks in which toys or food could be shared with an adult playmate who had none.
What they found. Two-year-olds shared frequently and spontaneously; eighteen-month-olds shared when given several opportunities and when the partner showed clearly what she wanted. Children with a better understanding of who owns what shared more — independently of age and language.
What it does not prove. Sharing with an adult in a laboratory is not a sandpit with a peer. But the practical hint stands: understanding "mine and yours" does not hinder generosity, it helps it — a child whose own things are respected shares more readily.
For a parent the four studies point the same way: generosity is not something wrenched out of a three-year-old by command, but something that comes together by seven out of respect for "mine", turns for what is shared, and his own choice to give.
By age
| Age | What changes |
|---|---|
| 1.5–2 | Shares if the other person asks clearly and there is time to think; "mine" and "yours" are still forming. Teach by showing: "give — here", swaps from hand to hand, no demands. |
| 3–4 | The case above is about this age. Most hold on to what is theirs — that is the norm, not greed. Turns tied to an action, swaps and the right not to give up what is personal work; shame and "you're a big boy" do not. |
| 5–6 | A sense of "fair shares" and an interest in fairness appear; you can ask "how do we split it so it's fair for both?" and offer a choice. Praise specifically and without a reward. |
| 7–8 | Most prefer an equal split — but more readily with "their own". A conversation about the fact that the other child at the playground counts too; greed at this age is more often a sign of anxiety or loneliness than a trait. |
Where culture comes in. In some families and countries a child must share everything he has with a guest; in others personal belongings are respected from an early age. The forks above do not argue with that: the distinction between personal and shared, and choice instead of command, work in any culture — where exactly the line of "personal" runs in your home is up to you.
When to see a specialist
A tight grip on a bucket at three is no reason. Take notice if by six or seven a child never shares with anyone, cannot play beside others without a fight over things, takes and spoils what belongs to others and has not a single friend — or if the greed appeared suddenly alongside changes at home: a new baby, a move, a divorce. Then a conversation with a child psychologist is about what stands behind the behaviour, not about the bucket.
What a child learns when he is not forced
That "mine" is respected — and therefore "yours" must be respected too: it is the same idea seen from two sides. That shared things go in turns, and the turn comes back. And that he can give something up himself — and that feels different from giving it up under another mother's gaze. Games in which compassion and generosity are trained without coercion are collected in the article on empathy; how to hold rules without shouting — in the case on boundaries.
Sources
- Fehr E., Bernhard H., Rockenbach B. Egalitarianism in young children. Nature, 2008, 454(7208), 1079–1083. doi:10.1038/nature07155
- Chernyak N., Kushnir T. Giving preschoolers choice increases sharing behavior. Psychological Science, 2013, 24(10), 1971–1979. doi:10.1177/0956797613482335
- Warneken F., Tomasello M. Extrinsic rewards undermine altruistic tendencies in 20-month-olds. Developmental Psychology, 2008, 44(6), 1785–1788. doi:10.1037/a0013860
- Brownell C. A., Iesue S. S., Nichols S. R., Svetlova M. Mine or yours? Development of sharing in toddlers in relation to ownership understanding. Child Development, 2013, 84(3), 906–920. doi:10.1111/cdev.12009
The scene is an illustration, not a real family. This material does not replace an in-person consultation with a specialist.