Sibling Rivalry: Why Kids Fight and How to Help Them Get Along

“He’s looking at me!” “She took my toy!” “It’s not fair!” Before you have finished making breakfast, someone is crying, someone is shouting and someone else is telling on both of them. If you have more than one child, you probably know the sound of a fight starting from two rooms away.

Sibling rivalry is one of the most common sources of stress in family life, and one of the least talked about. If you are looking for ways to help your kids get along, you are not failing: this is normal. This guide explains why siblings fight, what is typical, and ten practical strategies for reducing conflict and building a kinder relationship between your children.

What is sibling rivalry?

Sibling rivalry is the competition, jealousy and conflict that often arises between brothers and sisters, including step- and half-siblings. It can show up as arguing, teasing, tattling, grabbing, hitting, sulking or constantly measuring who got more.

It tends to start when a second child arrives and continues through childhood, often peaking when children are close in age or going through developmental transitions.

Why do siblings fight?

Fighting is rarely about the actual toy or seat. Underneath, several things are happening.

Competition for attention and love

Children need their parents, and they may feel that time, attention or affection is limited. “Who does Mum love best?” is often the hidden question.

Differences in age, temperament and needs

An eight-year-old and a three-year-old want different things. A sensitive child and a bold child clash. Differences in personality, energy and interests create friction.

The need for identity and independence

Children work out who they are partly by contrast with siblings: “I’m the sporty one, you’re the clever one.” Rivalry can be a way of staking a claim.

Tiredness, hunger and boredom

As with tantrums, these are trigger conditions. Many fights happen before dinner, at the end of a long car ride, or on a rainy afternoon.

Still-developing skills

Children are learning how to share, take turns, manage anger and negotiate. They don’t yet have the skills of adults, and siblings are the “practice partners.”

Family stress and changes

New babies, a house move, parental conflict, illness or a change in routine can raise tension.

What they see modelled

Children watch how parents and other adults handle conflict. Shouting, sarcasm and blaming at home tend to reappear in sibling fights.

Is sibling conflict normal?

Yes. Researchers who study siblings note that some conflict is a normal and even useful part of growing up, because it offers practice in negotiating, compromising, standing up for yourself and repairing relationships. What matters more than the amount of conflict is how it is handled, and whether the relationship also has warmth.

Research on sibling relationships has found that relationships with more warmth and fewer, less intense conflicts are associated with better emotional and behavioural outcomes for children, and that harsh, hostile sibling relationships are linked with more difficulties. So the goal isn’t a fight-free home. It is to help children build warmth and conflict-resolution skills.

10 ways to reduce sibling rivalry

1. Stay calm, and step in when needed

Your response sets the tone. Try to keep your voice low and your body relaxed. Decide in advance when you will step in:

• Step in immediately if there’s physical aggression, cruelty or a risk of injury.
• Wait and watch for ordinary squabbles. Children need chances to work things out.

If you find yourself shouting, see how to stop yelling at your kids.

2. Don’t play judge

It is tempting to work out who started it, but you rarely see the whole story, and taking sides fuels resentment and rivalry. Try:

• Staying neutral: “It sounds like you both want the same toy.”
• Treating both children as part of the problem and part of the solution: “You two need to find a way to share.”
• Avoiding labels like “the troublemaker” or “the good one.”

3. Separate and cool down if it’s heated

If emotions are running high, give everyone space: “You need some time apart. We’ll talk when you’re calm.” A short break in different rooms lets feelings settle. Then bring them back for problem-solving. Big feelings are hard to think through; see emotional regulation basics for what helps the whole family.

4. Coach them to solve it themselves

Once calm, guide the children through a simple process:

1. Each child says what happened and how they feel, without interrupting.
2. Restate what you hear: “You felt left out, and you were frustrated your brother took the ball.”
3. Ask: “What could we do to fix this?”
4. Help them choose a solution they both agree on.
5. Check in later.

Coaching, rather than solving, builds skills they will use for life. For younger children, keep it short and use simple words; see helping children name big feelings.

5. Give each child one-on-one time

Much rivalry is about attention. Regular, protected time with each child, even 10 to 15 minutes a day, fills their “attention cup” and reduces attention-seeking through conflict. Let them choose the activity, put your phone away and give your full attention. Also find moments to notice each child’s individual qualities.

6. Be fair, but not identical

“Fair” doesn’t mean the same. Children have different ages, needs and interests. Explain: “Fair means everyone gets what they need, not that everyone gets the same.” A younger child may have an earlier bedtime; an older child may have more privileges and responsibilities. Being open about this, and consistent, helps reduce complaints.

7. Avoid comparisons and labels

Comparing children (“Why can’t you be more like your sister?”) feeds jealousy and shame. Labels such as “the clever one” or “the difficult one” can stick. Praise each child for their own strengths and efforts, and describe behaviour rather than character: “You were patient when you shared your crayons.”

8. Set clear family rules

Agree a few simple, consistent rules, ideally with the children’s help:

• No hitting or hurting
• Ask before using someone’s things
• Use words, not fists or insults
• Take turns
• Respect each other’s space

Explain what happens if rules are broken, and follow through calmly. Consistent consequences, rather than shouting, work better; the American Academy of Pediatrics recommends calm, positive approaches over harsh verbal discipline.

9. Notice and reward cooperation

Children often get most attention when they fight. Turn that around. Catch them getting along:

• “I noticed you shared your game. That was kind.”
• “You two worked as a team to tidy up.”
• Family rewards for cooperation, such as a game night

Positive attention teaches children that peace pays.

10. Build a sense of “us”

Help siblings feel like a team:

• Do shared activities they both enjoy, such as cooking, games or walks
• Give them joint projects or challenges
• Encourage them to help each other
• Tell family stories that highlight their bond
• Let older children help in age-appropriate ways, without making them “little parents”

Shared fun and memories create warmth to balance conflict.

Handling common flashpoints

Situation	What can help
Sharing toys	Turn-taking with a timer, duplicates of favourite items, or a “special things” box each child controls
Tattling	Ask: “Is this a safety problem or a problem you can solve?” Thank them for telling you about safety issues
Car journeys	Separate seats, games, audio stories, snacks, and clear rules
Bedrooms and space	Give each child some private space and possessions
New baby	Prepare older sibling, give them a role, spend one-on-one time
Teasing	Name it: “That was unkind. In our family we don’t tease.” Teach both sides
Competition	Emphasise personal best and cooperation over winning

Sibling rivalry by age

• Toddlers (1–3): Conflict often arises over toys and attention. Provide duplicates, distraction and close supervision; see how to handle toddler tantrums.
• Preschool (3–5): Children are learning to share, and fighting is frequent. Coach simple negotiation.
• School age (6–12): Fairness becomes a big theme. Use family meetings and problem-solving.
• Teens: Conflicts may centre on space, privacy and independence. Encourage respect and boundaries; see how to talk to your teenager.

When it’s more than typical rivalry

Most sibling conflict is normal. But seek help if:

• there’s physical violence or serious injury, or a child is frightened,
• one child is persistently bullied, humiliated or controlled by another,
• there’s sexual behaviour between children that seems inappropriate for their age or is coercive,
• conflict is constant, extreme and doesn’t improve despite consistent efforts,
• a child seems very unhappy, withdrawn, anxious or is refusing school,
• family stress, illness, or parental conflict is making things worse,
• you feel unable to cope or are worried you might lose control.

Talk to your paediatrician, school counsellor or a family therapist. If a child is in danger, contact your local emergency number. In the United States, the Childhelp National Child Abuse Hotline (1-800-422-4453) provides confidential support. See our disclaimer for more.

Looking after yourself

Refereeing is draining. Try to:

• Take breaks, and share the load with another adult
• Keep expectations realistic. Some noise and squabbling is normal.
• Notice what works, and go easy on yourself
• Repair after your own mistakes: “I got cross earlier. I’m sorry.”

Managing your own stress also helps; see how to stop feeling overwhelmed.

Frequently asked questions

Is sibling rivalry normal?

Yes. Almost all siblings compete and fight sometimes. It becomes a concern only when it involves harm, cruelty or constant intense conflict.

At what age is sibling rivalry the worst?

It often peaks in the preschool and early school years, especially when siblings are close in age, and can flare during teenage years.

Should parents get involved in sibling fights?

Step in immediately for safety and cruelty. For ordinary squabbles, give children a chance to sort it out, then coach if they can’t. Avoid deciding who is “right”.

How do I treat siblings fairly?

Focus on meeting each child’s needs rather than treating them identically. Spend one-on-one time with each, and explain your reasoning.

Does sibling rivalry go away?

Often it eases as children mature, and many siblings become close in adulthood. Building warmth and skills now helps.

What if one child always seems to be the “victim”?

Watch closely. Set firm rules, protect the child being targeted, work with the child who is aggressive and consider professional support if it persists.

The bottom line

Your children won’t always get along, and they don’t need to. What they do need is your help learning how to disagree without hurting each other, how to feel valued as individuals, and how to enjoy each other’s company. Choose one strategy this week, such as ten minutes of one-on-one time with each child, and see what changes. Sibling relationships are built in the everyday moments, including the difficult ones.