“Why does he always get more than me?”
“She gets everything!”
“You love her more.”
“Why do I have to share?”
If you have more than one child, chances are you have heard some version of these statements.
Sibling rivalry is one of the most common experiences in family life. It can begin when a new baby enters the family and continue through childhood, adolescence and even adulthood.
But sibling rivalry doesn’t always look the same.
A toddler may grab a toy.
A school-age child may complain about fairness.
A teenager may compete for freedom or parental trust.
Adult siblings may compare careers, relationships or achievements.
The behaviour changes with age—but underneath it is often the same basic question:
“Do I matter as much as my sibling?”
Understanding what is happening at each developmental stage can help parents respond with greater empathy and less frustration.
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Why Do Siblings Compete?
Children may compete for many reasons:
* Parental attention
* Love and reassurance
* Toys and possessions
* Space and privacy
* Privileges
* Recognition
* Academic or sporting success
* Independence
* A sense of fairness
* A feeling of belonging
Sometimes rivalry is also about identity.
Children naturally ask themselves:
“Who am I in this family?”
If one sibling is known as “the clever one,” another may unconsciously search for a different role.
If one is praised constantly for being responsible, another may begin to seek attention through challenging behaviour.
This is why labels and comparisons can have long-lasting effects.
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Stage 1: Toddlers & Preschoolers
“That’s MINE!”
For young children, sharing, waiting and controlling impulses are still developing skills.
A toddler may push another child because they don’t yet have the language to say:
“I was playing with that.”
A preschooler may become jealous when a younger sibling receives attention.
What is happening?
Young children are still learning:
* Turn-taking
* Delayed gratification
* Emotional regulation
* Empathy
* Language for expressing needs
Their reactions may be intense because their brains are still developing the ability to manage big emotions.
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Stage 2: Early School Years
“It’s NOT FAIR!”
As children enter school, their understanding of fairness becomes much stronger.
Suddenly parents hear:
“Why does she get to stay up later?”
“He got a bigger piece!”
“She got a new toy!”
Children begin comparing themselves with their siblings and noticing differences in rules, privileges and attention.
What is happening?
Children are developing a stronger sense of:
* Fairness
* Rules
* Justice
* Competition
* Social comparison
The difficulty is that children often define fairness as:
“Everyone should get exactly the same.”
But families don’t always work that way.
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Stage 3: Middle Childhood
“I’m Better Than You!”
Competition may now move beyond toys.
Children may compare:
* Marks
* Sports
* Appearance
* Friends
* Talents
* Possessions
* Popularity
This is also the stage when parental comparisons can become particularly powerful.
“Why can’t you be more like your sister?”
may sound like motivation to an adult.
To a child, it can sound like:
“My sibling is better than me.”
Over time, comparison can create resentment rather than motivation.
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Stage 4: Pre-Teen Years
“You Always Take Their Side!”
As children approach adolescence, their sense of identity becomes stronger.
They may become more sensitive to perceived favouritism.
They may also challenge family rules more openly.
Sibling rivalry can become less physical and more verbal:
“You’re so annoying.”
“Nobody wants you here.”
“Mom likes me more.”
What is happening?
Pre-teens are beginning to ask:
“Who am I?”
and
“How do I fit into this family?”
They need opportunities to develop individuality rather than constantly being defined in relation to their siblings.
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Stage 5: Teenagers
“Stay Out of My Business!”
Teenage rivalry can become more sophisticated.
Siblings may compete for:
* Independence
* Privacy
* Technology
* Driving privileges
* Social freedom
* Academic recognition
* Parental trust
* Money
Sometimes old childhood roles continue into adolescence.
The “responsible one.”
The “difficult one.”
The “smart one.”
The “funny one.”
The “sensitive one.”
Once these labels become part of family identity, children may feel trapped by them.
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Stage 6: Young Adults & Beyond
“Our Lives Are Completely Different.”
Sibling rivalry doesn’t necessarily disappear when children leave home.
It can simply change form.
Adult siblings may compare:
* Careers
* Income
* Relationships
* Marriage
* Children
* Homes
* Lifestyle
* Achievements
* Parental attention
And sometimes childhood comparisons continue well into adulthood.
A child who grew up feeling like “the less successful sibling” may continue to experience that feeling even after becoming successful themselves.
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So, Is Sibling Rivalry Bad?
Not necessarily.
Some conflict between siblings is normal.
In fact, sibling relationships can provide children with opportunities to learn:
* Negotiation
* Communication
* Boundaries
* Perspective-taking
* Emotional regulation
* Problem-solving
* Empathy
* Repair after conflict
The goal is therefore not to create a family where siblings never fight.
The goal is to help children learn:
“We can disagree without hurting each other.”
And eventually:
“We can have differences and still love and respect one another.”
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When Should Parents Be Concerned?
There is an important difference between normal sibling conflict and harmful behaviour.
Parents should pay closer attention when there is:
* Repeated physical aggression
* Bullying
* Intimidation
* Deliberate humiliation
* Destruction of belongings
* Persistent exclusion
* A significant power imbalance
* Fear of another sibling
* Severe emotional distress
In these situations, simply saying “They’ll grow out of it” may not be enough.
Children may need active parental intervention and, when appropriate, professional support.
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One Question Parents Can Keep Asking
Instead of asking only:
“Who started it?”
try asking:
“What is each child needing right now?”
One child may need attention.
Another may need space.
One may need help expressing anger.
Another may need reassurance that they are equally loved.
When we look beneath the behaviour, we often discover that sibling rivalry is not simply about the toy, the television remote or who got the bigger piece of cake.
It may be about something much deeper:
The need to feel valued, seen and secure.
And that gives parents something much more powerful than a referee’s whistle:
the opportunity to teach children how to build relationships.
Minaz Ajani has a Master’s in Sp. Ed with a focus on Learning Disabilities. She is an Internationally Licensed Brain Gym®️ , Touch for Health®️ , Movement-Based Learning™️ and RMTI ®️ Instructor and consultant and founder of Manifest Your Potential (http://manifesturpotential.com)