Author’s practical guidance
Labels stick
Source named in the book: sibling relationships research (Dunn) · Kramer
The calm one and the wild one start as shorthand between tired adults and end as the children's own descriptions of themselves.
Say this now
“He was loud at dinner today.”
An event, not a type. The word today is doing all the work in that sentence.
“You climbed high today. You also read a long time yesterday.”
Two different things in two days keeps the description from hardening into a category.
Do this
- Describe today rather than always.
- Give both children access to the same activities, especially the one the other has claimed.
- Correct relatives who assign types — once, quietly, out of the children's hearing.
- Watch your own shorthand; the labels usually start in adult conversation.
- When a child does something outside their assigned role, say nothing special about it, so it stays ordinary.
Avoid this
- "He's my quiet one, she's my handful" — said to guests, in their hearing.
- "You've always been like that." — converts a day into a permanent trait.
- Assigning talents by child: one is artistic, one is athletic.
If it repeats
A child who says I'm the bad one out loud has already accepted the role. Loosening it takes months of ordinary counter-evidence, not one conversation.
Why the book suggests this
The calm one and the wild one start as shorthand between tired adults and end as the children's own descriptions of themselves. Siblings pick their positions relative to each other, and once a role is occupied, the other child tends to take a different one rather than compete for the same.
That is why the labels are self-fulfilling here in a way they would not be for an only child. Being told your brother is the sporty one is information about which territory is taken.
Related prepared situations
What happened next?

From this collection
Same Words: Two Children
45 prepared situations in this family area.