How to Deal With Sibling Rivalry: Causes and Solutions

Last updated on January 15, 2026

How to deal with sibling rivalry is a major concern for parents, because sibling rivalry affects most families at some point. It often starts with constant comparisons, financial inequality, or parents unintentionally taking sides. Learn why sibling rivalry happens, whether parents play a role, and the best ways to handle it so you can reduce conflict, keep the peace at home, and strengthen long-term sibling relationships.

💡 Key Takeaways
Sibling relationships are often the longest relationships a person will have. Learning to manage them is crucial for lifelong family harmony.
Authoritative parenting, being warm, demanding, and responsive to your kids, is what’s proven to have the strongest protective effect against the kind of sibling conflict that’s common among brothers and sisters.
Neglectful, inconsistent, indulgent, and authoritarian parenting, on the other hand, appear to be linked with more sibling conflict.
What Is Sibling Rivalry

Sibling rivalry is the natural, often persistent, competition between brothers and sisters for parental attention, love, and resources. 1

Understanding the psychology behind these behaviors helps parents respond more effectively. 

Tensions can begin as early as the arrival of a new baby and often persist throughout childhood. Sometimes, rivalry is fueled by perceptions of favoritism, such as when one child is seen as the ‘golden child’, which can create feelings of unfairness and intensify sibling conflict.

While a little bit of rivalry is normal, intense sibling rivalry can hurt kinship relationships.

Sibling rivalry: Two sisters on a bed, one teasing the other by sticking out her tongue

Sibling rivalry isn’t just a phase—it’s a daily reality in most households. Maybe it’s the time when a favorite toy went missing or a heated argument over who got the last cookie—these situations have happened in almost every family. Whether it’s playful teasing or full-blown battles, it can show up in ways that parents know all too well:

  • Competing for privileges – Who gets the front seat? Who picks the movie? Who gets the bigger slice of cake? The smallest wins can feel like major victories.
  • Academic or personal competition – Whether it’s grades, sports, or simply getting more praise, siblings often measure their success against each other.
  • Teasing and provoking – The classic eye-roll, a sarcastic jab, or mimicking every word—small actions that lead to big reactions and can make siblings feel hurt.
  • Breaking or taking belongings – From borrowing clothes without asking to hiding a favorite toy, these situations often spark brother sister conflict and turn possession battles into full-on sibling wars.
  • Physical conflicts – A shove here, a poke there—sometimes, frustration turns into action, especially between sisters experiencing sibling rivalry.
  • Exclusion and jealousy – Feeling left out when an older sibling gets more freedom or attention can sting, and younger siblings don’t always hide their resentment.
  • Challenging opinions – Disagreeing just to get a reaction or asserting dominance in a conversation—because sometimes, winning the argument is all that matters.
Sibling rivalry

Several reasons can lead to sibling rivalry family dynamics, including:

  • Competition for Attention: Children naturally crave their parent’s attention and approval. If they feel one sibling is getting more love or praise, jealousy and rivalry can grow. Children may also compete to see how much power they have within the family, which can intensify conflicts.
  • Different Personalities: Siblings have unique temperaments, interests, and needs. These differences can cause misunderstandings or clashes. Sometimes, a child may seek out the other child for interaction or attention, which can also lead to conflict.
  • Age and Developmental Stages: Younger siblings might feel left out because they can’t do what their older siblings can. In contrast, older ones might feel burdened by extra responsibilities.
  • Parental Influence: Sometimes, without meaning to, guardians can fuel rivalry through comparisons or favouritism.

Children often express their feelings of powerlessness by taking their frustrations out on their siblings.

Not entirely, but parents do play a role. While kids’ personalities and age differences contribute to rivalry, how parents interact with one another and their kids—including both mom and dad—can significantly influence sibling dynamics. 2

The involvement of the other parent is important, as unified and consistent parenting helps prevent misunderstandings and favoritism.

In families where only one parent is present, or in blended families where step sibling rivalry may develop, unique challenges can arise in managing sibling relationships and maintaining balance. Certain parenting behaviours can make things worse.

You can learn more about parenting styles in our article: Modern Parenting

How Can Parents Unintentionally Fuel Sibling Dynamics

Parents may unknowingly contribute to rivalry through:

  • Comparing Siblings: Statements like “Why can’t you be more like your sister?” can make children feel they’re not good enough.
  • Unequal Praise and Criticism: Constantly praising one child or criticizing another in front of their siblings can create jealousy and resentment.
  • Favoritism: Even if unintentional, showing more affection or attention to one kid can lead to rivalry.
  • Gender Bias: Treating sons and daughters differently can make kids feel unfairly treated.
  • Unequal Responsibilities and Privileges: Expecting the older child to be more responsible while letting the younger one get away with more—allowing them to avoid responsibilities, misbehave, or break rules without consequences—can create bitterness.

In these situations, children may see complaints about fairness as ‘fair game,’ which can fuel ongoing disputes.

Sibling rivalry: One sister sits holding her stuffed toy while the other stands with her hand on her waist, arguing

For many competitive siblings, rivalry isn’t inherently negative. It can be beneficial in teaching children essential life skills such as:

  • Conflict resolution
  • Negotiation
  • Developing empathy

Through sibling rivalry, children learn to resolve conflict and develop important social skills that will benefit them throughout life.

These skills are crucial for personal relationships and future interactions outside the family. However, when rivalry escalates and becomes excessively intense, it can lead to:

  • Long-term resentment
  • Aggressive behavior
  • Damaged sibling relationships
  • Disrupted household harmony

Understanding sibling rivalry’s underlying causes and triggers is vital for managing it effectively. By addressing these issues early on, parents can:

  • Foster a more supportive and cooperative environment.
  • Ensure that sibling relationships contribute positively to the family dynamic.
  • Prevent ongoing tension from escalating into long-term resentment, emotional distance, or persistent clashes.
Sibling rivalry: Brother yelling at sister

Sibling rivalry can start early, but it often peaks between ages 7 and 13—especially when kids are less than four years apart. At this stage, they’re old enough to compare privileges, compete for attention, and push each other’s buttons with precision.

They’re also developing stronger personalities and independence, which can lead to more frequent clashes. While younger children struggle with sharing their parents, older kids battle over fairness, recognition, and personal space. Giving each child their own space within the home can help reduce conflicts and provide a safe retreat when tensions rise.

Understanding this phase can help you step in when needed and guide them toward healthier ways to resolve conflicts. Sometimes, consequences or time apart may need to last for a week to be effective in helping siblings cool down and reflect.

It usually takes 2–4 weeks of consistent sibling bonding activities to see fewer quarrels. Most kids respond pretty quickly once they start having more positive moments together than negative ones. You’ll notice small improvements first, shorter arguments, less yelling, and more cooperation.3

Deeper changes, like better teamwork and fewer jealousy triggers, often take 6–8 weeks, especially if you’re also giving each child a little one-on-one time and staying neutral during conflicts.4

When tensions between siblings go beyond normal squabbles, deeper issues are often at play.

Extreme rivalry often arises when one child feels unfairly treated or less loved than their sibling, leading to extreme sibling jealousy that intensifies conflicts. In some cases, this can escalate into sibling bullying, where conflicts become more serious. This is due to:

  • Constant Comparisons: Measuring siblings against each other can fuel feelings of inadequacy.
  • Financial Inequality: Unequal financial support or gifts can create resentment.
  • Taking Sides in Arguments: Consistently siding with a sibling can leave the other feeling misunderstood or less valued.5
  • Feeling Marginalized: One child may feel overlooked or less important, especially if the actions or presence of the other sibling intensify feelings of exclusion or rivalry.
  • Unequal Distribution of Attention: When one sibling consistently receives more attention, the other may feel neglected or less loved.

Dealing with sibling rivalry proactively is important, as siblings often spend more time together than with anyone else, making this the longest and most influential relationship in a person’s life. As a parent, you can create a calmer environment by using these practical strategies:6

1. Let Them Work It Out

  • Resist the urge to jump in and solve every argument.
  • Encourage your kids to get involved in resolving their own conflicts by talking through issues together while staying calm.
  • Suggest that they practice active listening by repeating what the other said to show understanding. This builds problem-solving skills and helps them learn to manage disagreements independently.

2. Stay Neutral—Don’t Take Sides

Comparing siblings or assigning blame can lead to resentment. Instead of labeling one child as the “troublemaker,” address the behavior, not the person.

  • When intervening in disputes, use the “Same Boat” principle by treating both children equally to avoid any perception of bias.
  • Focus on teaching conflict resolution rather than pointing fingers.
  • If emotions escalate, consider using a time out as a neutral way for both children to calm down and reflect before discussing the issue further.

3. Set Clear Ground Rules

Teach your kids how to express frustration without yelling, name-calling, or hitting.

  • Establish basic house rules for respectful communication as a way to address sibling fighting, and be consistent in enforcing them.
  • Teach coping skills like walking away or deep breathing to help children manage their emotions during conflicts.

4. Anticipate Triggers and Plan Ahead

You know your kids best—predict what might cause tension, whether it’s sharing toys, picking a TV show, or deciding who gets the front seat.

Set up fair systems, like taking turns or setting time limits, to avoid unnecessary fights.

Learning to manage sibling rivalry not only reduces conflict at home but also helps children develop skills for building better relationships with friends.

5. Encourage Respect, Not Forced Friendship

It’s unrealistic to expect siblings to always get along. Unlike an only child, who may not face daily sibling conflicts, children with brothers and sisters must learn to navigate disagreements and develop mutual respect.

Instead of forcing closeness, emphasize the importance of mutual respect. Over time, a stronger bond may naturally develop.

6. Give Each Child Individual Attention

Sibling rivalry often stems from feeling overlooked. Make sure each child gets one-on-one time with you, so they don’t feel the need to compete for your attention.

For example, as a mother, setting aside special moments with each child can help them feel valued and reduce jealousy between siblings.

7. Teach Emotional Regulation

Help your kids recognize and manage their emotions in healthy ways. Encourage them to express feelings through words rather than outbursts and guide them in calming techniques like deep breathing or taking a break.

For example, if your child is upset because their younger brother is playing with their favorite toy, teach them to use “I feel” statements, such as “I feel sad when my toy is taken without asking.” This helps children express their emotions without blaming others and promotes better communication between siblings.

8. Model Healthy Conflict Resolution

Kids learn by watching you.

  • Show them how to handle disagreements calmly and respectfully, whether it’s with your partner, a friend, or even them.
  • Model how to resolve conflict by discussing problems openly and working together to find solutions.
  • You can also use role-playing conflicts as a way to help children practice resolution skills and understand different perspectives.

By applying these sibling conflict resolution strategies, you can reduce sibling rivalry, create a more peaceful home, and help your kids develop lifelong conflict-resolution skills.

Adult Sibling rivalry: Brother and sister sitting back-to-back, both looking upset

For many siblings, rivalry softens with time, giving way to mutual respect and understanding. But for others, old wounds don’t simply fade—they linger, growing more complex with age.

Unresolved childhood tensions can quietly follow them into adulthood, shaping interactions, straining bonds, and, if left unchecked, creating lasting stress in their relationships.

Adult siblings rivalry: An adult brother grabs his sister's hair and shouts at her while she looks distressed and angry
  • Unresolved Childhood Issues: Grown-up sibling rivalry is often a continuation of unresolved issues from one’s early years or the emergence of new challenges that arise in adulthood.

Old grudges, past hurts, or lingering family roles can resurface over time, leading to tension and emotional distress.

These unresolved emotions may make it difficult for siblings to move forward and build healthier relationships.

  • Family Roles: Roles established during one’s formative years—such as being labelled as “the smart one” or “the troublemaker”—often persist, influencing how siblings interact and perceive each other as grown-ups.
  • Firstborn children, in particular, may continue to grapple with expectations of responsibility and leadership within the family dynamic.
  • Financial Disputes: Disputes over inheritance or financial support can create lasting rifts among adult siblings.
  • Lifestyle Differences: Differences in lifestyles and values, such as divergent career paths or parenting styles, can lead to conflicts.
  • Parental Influence: Parental influence remains a significant factor; ongoing favouritism or interference from parents can keep old conflicts alive and well.
Rebuilding sibling relationships: A brother and sister sit back-to-back, smiling as a sign of reconciliation and renewed bond

Rebuilding sibling relationships takes effort, patience, and the right approach.To foster reconciliation, mature siblings can heal their relationships with conflict resolution skills:

  • Engage in Open Communication: Engage in open and honest communication to address unresolved issues.
  • Communicate with Empathy: Listen to understand each other’s perspectives rather than respond.
  • Set Healthy Boundaries: Establish personal limits to maintain respect and avoid unnecessary conflicts.
  • Seek Professional Help: Seek professional help, if necessary, such as counselling services, to provide a safe space for working through issues.
  • Organize Family Meetings: Meetings can provide a structured environment for addressing conflicts, allowing everyone to express their thoughts and collaboratively find solutions.

By taking these steps, siblings can move past rivalry and reconnect, transforming their relationships into sources of support and friendship.

Sometimes, even the best efforts don’t work. When is the time to get outside help?

The straightforward answer: when you can’t handle it on your own.

If sibling rivalry is causing serious emotional distress, impacting mental health, or leading to long-term relationship damage, it may be time to seek professional help. Signs to watch for include:

  • Constant Fighting or Aggression: When conflicts turn violent or become emotionally abusive.
  • Signs of Anxiety or Depression: If one or more siblings show signs of mental health struggles related to the rivalry.
  • Complete Breakdown of Communication: When siblings refuse to talk or interact with each other at all.

In these cases, seeking help from a family therapist or counsellor can be the best step forward.

Text Avocado Health for real-time, expert-backed parent coaching that stops fights, reduces jealousy, and brings peace back home.

Sibling rivalry is normal growing up, but it mustn’t be destructive. By creating opportunities for the whole family to bond and have fun together, and by understanding why it happens and taking steps to reduce jealousy and competition, parents can help their kids build strong, loving bonds.

How does sibling rivalry affect adulthood?

Sibling rivalry can have lasting effects that extend well into adulthood. Many adults carry unresolved issues from their childhood sibling relationships, which can influence their interactions and emotional well-being. These lingering conflicts may manifest as ongoing resentment, competition, or strained communication between adult siblings.

How does sibling rivalry affect mental health?

Harmful sibling interactions and their consequences during adolescence may continue into adulthood. Adults who have experienced such dynamics often report issues such as depression, anxiety, low self-esteem, eating disorders, post-traumatic stress disorder, and challenges in developing close and trusting relationships with others.

What does a healthy sibling relationship look like?

Sibling relationships thrive when every family member values both their shared traits and their unique differences. When conflicts arise, they are addressed and healed rather than allowed to fester and become lasting wounds within the family.

Sources:

  1. Sibling rivalry
  2. Relationships between parenting style and sibling conflicts
  3. How are habits formed: Modelling habit formation in the real world
  4. Siblings Are Special: Initial test of a New Approach for Preventing Youth Behavior Problems
  5. Reducing Sibling Conflict in Maltreated Children Placed in Foster Homes
  6. Enhancing Sibling Relationships to Prevent Adolescent Problem Behaviors: Theory, Design and Feasibility of Siblings Are Special
Hans Kullberg

Father of Five. CEO & Co-Founder of Avocado Health. 2x Exited Startup Founder. Passionate about empowering families. Motivated to help humans unlock their fullest potential.

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