Sibling Rivalry in Children: Why It Happens and How to Manage It

Sibling Rivalry in Children: Why It Happens and How to Manage It

Sibling rivalry is among the concerns parents raise most often and discuss least. Families usually read it as their own failure: "We don't treat them differently, so why does this happen?"

Yet sibling rivalry is a developmentally expected phenomenon that can arise independently of how parents behave. For a child, a sibling is both a loved companion and a competitor for a limited resource — parental attention. That duality produces conflict.

This article covers what level of rivalry is considered normal, which parental attitudes unknowingly feed it, and the concrete strategies that can be applied at home.

Key Points

• A degree of sibling rivalry is developmental; eliminating it entirely is not the goal.
• Rivalry is a natural arena in which children develop sharing, turn-taking and conflict-resolution skills.
• A family's language of comparison and constant arbitration reinforce conflict rather than reduce it.
• Treating children equally and treating them fairly are not the same; needs differ by age.
• Persistent physical aggression, one child systematically withdrawing, or developmental regression warrant specialist assessment.

What Is Sibling Rivalry and Why Is It Normal?

Sibling rivalry is a natural response to having to share parental attention, approval and resources with another person. For a young child, parental attention is not only an emotional need but the foundation of their sense of security. Its division is experienced as more threatening than adults assume.

Research shows that conflict between siblings can occur several times an hour during the preschool years. Families find this frequency extraordinary, yet it falls within the expected range for that age group.

Developmentally Expected Competition

The sibling relationship is the first arena in which a child negotiates with an equal, defends a boundary and attempts compromise. That experience later transfers to peer relationships. A sibling relationship with no conflict at all is not the ideal it is assumed to be; it often means one child has given up voicing their own needs.

When Does It Exceed the Normal Range?

The picture has moved beyond developmental rivalry in the following situations:

• Conflict occupies most of the day and the household is permanently tense
• Physical aggression reaches a level that risks injury
• One child systematically avoids the other or withdraws to their room
• One child shows marked deterioration in sleep, appetite or school performance
• Rivalry turns into self-harm or statements such as "I wish they had never been born"

Sibling Rivalry by Age

Ages 0-2

At this stage a young child cannot articulate jealousy conceptually; the response is bodily and behavioural. Excessive clinging to the mother, crying when the sibling is picked up, and disrupted sleep are common.

Ages 2-5

This is when rivalry is most intense. The child now understands the situation but cannot regulate the feeling. Signs of regression are typical: a toilet-trained child wetting themselves again, reverting to baby talk, or asking for a bottle. These are not defiance but a search for security.

Ages 6-11

During the school years, rivalry is organised around the concept of fairness. Statements such as "you gave them more" or "you never tell them off" come to the fore. At this age children compare parental responses meticulously and experience small differences as major injustice.

Adolescence

In adolescence conflict may decrease but its nature changes. Invasion of privacy, sharing possessions and parents applying different rules become the main issues. The adolescent compares the flexibility granted to a younger sibling with their own experience.

Parental Attitudes That Unknowingly Feed Rivalry

The Language of Comparison

Sentences such as "your sister tidied her own room at your age" are intended to motivate but achieve the opposite. Comparison tells the child that parental love depends on performance and places the sibling directly in the position of rival.

Favourable comparison has the same effect. "You are so much easier than them" places on the praised child the burden of maintaining that position.

Constant Arbitration

When a parent intervenes in every disagreement to decide who is right, children move away from producing solutions. Over time they focus on persuading the parent rather than reaching agreement with each other, because that is how one wins.

It also leaves a lasting sense of injustice in the child judged to be in the wrong.

Fixed Roles

Fixed roles assigned within the family — "the calm one", "the difficult one", "the hardworking one" — lead children to sustain them. A child defined as difficult learns that positive behaviour will go unnoticed and continues to obtain attention the way they know: through conflict.

Maturity Expected of the Older Child

The "you are older, be understanding" approach is common but frequently unfair. A two-year age gap does not make the older child an adult. Resentment accumulating in a child from whom sacrifice is constantly expected is directed straight at the sibling.

The Obsession with Treating Children Equally

The most common solution families reach for is to equalise everything: buying two of the same toy, matching pocket money to the last coin, spending identical amounts of time.

This is reassuring in the short term but in the long run places children in the position of constant auditors. The child focuses not on their own need but on what their sibling received. The moment equality breaks down, the sense of injustice emerges more strongly.

Differences Between Parents

In households where one parent sets a limit and the other relaxes it, sibling conflict is more frequent and longer-lasting. Children quickly learn which parent to approach, and the disagreement stops being a matter between siblings and becomes a negotiation between parents.

It is also normal for each parent to find one child easier to get along with; the problem arises when children read that closeness as taking sides.

Warning Signs: When to Be Concerned

Signs of Regression

Loss of acquired skills is common, particularly after the arrival of a new sibling, and is usually temporary. If it lasts more than a few months or impairs the child's daily functioning, assessment is warranted.

Physical Aggression

Pushing and shoving between siblings is normal; aggression that causes injury, recurs and is unaccompanied by remorse is a different picture. In such cases an underlying impulse control problem, attention deficit or conduct disorder should be investigated.

Silent Withdrawal

This is what families overlook most. A child who stays entirely away from conflict, withdraws to their room and avoids settings where the sibling is present goes unnoticed because they "cause no trouble". Yet this withdrawal may signal depressive symptoms or a persistent sense of defeat.

Physical Complaints

Abdominal pain, headache and difficulty falling asleep are the most frequent expressions of emotional strain, particularly in younger children.

What to Do: Strategies That Work at Home

One-to-One Time with Each Child

The strongest antidote to rivalry is undivided attention. Fifteen minutes a day, without the sibling present, with the phone away, belonging entirely to that child, is enough. The period looks short but its effect is marked when applied consistently.

It is important that this time be unconditional: it must not become a reward granted or withdrawn according to behaviour.

The Rule for Intervening in Conflict

Provided the safety boundary is maintained, do not intervene in every disagreement. Stop physical aggression immediately and without discussion. In verbal disagreements, manage the process rather than arbitrating: "You are both angry. Calm down first, then we will find a solution together."

Investigating who started it is generally fruitless and pushes children into a contest of blame.

Naming and Accepting the Feeling

Forbidding jealousy does not remove it, only conceals it. Rather than "you shouldn't be jealous of your sibling", saying "when your mother is with them you feel left out, and that is a very hard feeling" helps the child name their emotion.

Accepting a feeling is not approving a behaviour. The feeling is accepted and a limit is set on the behaviour: "It is normal to feel that way, but no hitting."

Need Rather Than Equality

Treating children identically is neither possible nor necessary. The aim is for each child to receive what meets their own need. Saying this openly helps: "I don't love you equally — I love each of you separately and completely. Because your needs differ, some things will differ."

Reinforce Cooperation

Parental attention naturally drifts towards conflict, while moments of getting along go unremarked. Naming the times siblings play together or help one another — "the two of you built that game together beautifully" — reinforces the desired behaviour.

How Sibling Conflict Shows at School

Tension accumulated at home often becomes visible at school. A child unable to express anger towards a sibling may direct it at peers, or conversely behave with excessive compliance at school and release it at home.

Among referrals from school counselling services in Ankara, cases in which a classroom behaviour problem has its roots in the sibling dynamic at home are not uncommon. Assessment therefore examines not only school observations but the pattern of relationships at home.

Particular Situations

The Arrival of a New Sibling

Preparation should begin during pregnancy but should not be overstated. Unrealistic promises such as "a playmate is coming for you" create disappointment when the baby arrives. Saying from the outset that the baby will not be able to play for a long time is healthier.

After the birth, preserving the older child's routine as far as possible, keeping school and sleep patterns unchanged, reduces anxiety.

The Effect of the Age Gap

Where the gap is under two years, rivalry is more intense but shared interests are greater. With gaps of more than four years, direct competition decreases; the risk then becomes the older child being pushed into a caregiving role.

When One Sibling Has a Diagnosis

Where ADHD, an autism spectrum condition or a chronic illness is involved, the family's time and attention inevitably shift towards that child. The other sibling often settles into the role of "the child who causes no trouble" and stops voicing their own needs.

These children also need regular one-to-one attention and a space in which they can express their feelings safely. Explaining the diagnosed sibling's situation in age-appropriate terms reduces the anxiety that uncertainty creates.

Step-Families and Blended Households

In families reformed after divorce, the sibling relationship carries an additional layer. Children must share not only parental attention but also their place and sense of belonging within the family.

Not rushing is decisive in these families. Expecting children to behave "like siblings" straight away usually backfires. Establishing shared routines gradually, protecting each child's one-to-one time with their own biological parent, and having discipline applied initially by the biological parent are all recommended.

Expert Opinion

According to Assoc. Prof. Mehtap Eroglu, the most frequent pattern in sibling rivalry referrals is that families define the problem as one child's behavioural difficulty. Yet sibling conflict is relational; when it is approached through a single child, that child's perception of being "the problem" is reinforced.

Clinical experience from consultations in Ankara shows that outcomes improve markedly when the focus of intervention shifts from the child to the pattern of family interaction. Parents abandoning the language of comparison and sustaining one-to-one time consistently makes a meaningful difference on its own in most cases.

A further important point is that families aim to end rivalry altogether. The realistic goal is to reduce conflict to a manageable level and to give children the skill of resolving disagreements.

Assoc. Prof. Mehtap Eroglu also emphasises that sibling conflict may be a marker of another strain within the family. During periods of parental burnout, tension between partners, a house move or a bereavement, conflict between children increases noticeably. Assessment therefore also considers the period the family is going through.

When Should You Seek Specialist Support?

Sibling conflict can be managed without professional support in most families. Referral to a child and adolescent psychiatrist is recommended in the following situations:

• Conflict markedly restricts daily life and the household is permanently tense
• Physical aggression causes injury or is escalating
• One child shows deterioration in sleep, appetite, school performance or friendships
• Signs of regression persist beyond a few months
• One child withdraws continually or expresses feeling worthless
• Rivalry turns into thoughts of self-harm or serious statements about harming the sibling
• Parents feel exhausted and the methods they have tried are not working

Seeking assessment does not mean the family has failed. Sibling dynamics form a relational pattern, and a small adjustment noticed by an outside observer can change an arrangement the family has been unable to shift for months.

Assessment and Appointment Process in Ankara

A considerable proportion of referrals for sibling conflict in Ankara come after families have spent months trying to resolve matters with their own methods. In these referrals, assessment addresses not only the children in conflict but the pattern of interaction at home.

At Assoc. Prof. Mehtap Eroglu's practice in Ankara, the first appointment is conducted with the parents. It is important for both parents in Ankara to attend together so that differences in approach can be addressed directly. The interview covers in detail when and in what circumstances conflict intensifies, and which methods the family has tried so far. Where required, the children are assessed individually and it is investigated whether one of them has attention deficit, an anxiety disorder or a conduct problem. In these assessments conducted by Assoc. Prof. Mehtap Eroglu, the aim is not to declare one child responsible but to make the pattern feeding the conflict visible.

Keeping a simple record of conflicts over one week before the first appointment — when, how long, how it ended — speeds up the process considerably. This record may reveal a pattern different from the family's recollection; noticing that most conflicts cluster at the tired hour after school or as screen time ends clarifies the target of intervention.

Sessions in Ankara are generally spaced two to four weeks apart. This interval is the time needed to observe the result of changes applied at home. Follow-up appointments review which strategies are working and the plan is updated accordingly.

If you are looking for structured support with sibling conflict in your family in Ankara, you can review our parent counselling service and request an appointment.

In Summary

Sibling rivalry is not a sign that the family has done something wrong but a natural part of a child's development. A degree of competition is a learning arena in which children develop social skills.

The family's role is not to eliminate conflict but to maintain the safety boundary, remove the language of comparison from the household, spend regular one-to-one time with each child and leave children room to resolve their own disagreements.

Where conflict becomes constant, turns into physical violence, or where regression, withdrawal or physical complaints appear in one of the children, consulting a child and adolescent psychiatrist is the most appropriate step.

For detailed information on how family relationship problems affect a child's emotional development, see our guide to family relationship difficulties.