When siblings fight all the time, it rarely hinges on the toy, the back seat or who asked first. Sibling rivalry runs on a deeper dynamic: different temperaments, a constant negotiation of fairness, and each child finding their place in the family. SAMRUM shows you which patterns keep running between them – and where you can step in.
Everything must be equal. Portions, bedtimes, screen time. If one gets slightly more, the other explodes. It's not about the food – it's about being seen.
One child yells and demands. The other withdraws and says nothing. You only hear the loud one – but the quiet one carries just as much.
They interrupt each other. They one-up each other. They both want to tell about their day – but neither wants to listen to the other's. It's about space, not ego.
What you get
Both children take an age-adapted test. The report describes where they are alike, where they clash – and what you as an adult can do without becoming the judge.
Sibling report
Emma & Lucas
Fairness Battle. Because both Emma and Lucas are very aware of whether things are fair, almost any uneven moment can set off a back-and-forth where each defends what they noticed. The argument isn't really about the cake or the screen time – it's about being seen and counted equally.
Trigger
Anything that involves dividing or taking turns: the last snack, who picks the show, screen time minutes, who got more help with homework, who was greeted first when a parent came home.
Escalation
One of them names the unfairness ('that's not fair, he got more'). The other answers back with their own version of who got what last time. Because both react quickly and intensely to what happens around them, the volume rises within seconds. Emma may withdraw to her room when it gets too loud; Lucas may keep pressing because he experiences the withdrawal as being shut out. The original small unevenness is now a much bigger fight about whose version is right.
Repair
An adult can step in early with a simple, neutral rule for the recurring situations (a screen-time chart, taking turns choosing the movie, a snack-splitting rule). Emma can practice naming what she needs in the moment – 'I need ten minutes, then I'll come back' – instead of only withdrawing. Lucas, with adult support, can practice noticing when a 'not fair' feeling is really a 'I want my turn too' feeling, and saying that instead. The fairness signal stays; the explosion shrinks.
Trigger
Anything that involves dividing or taking turns: the last snack, who picks the show, screen time minutes, who got more help with homework, who was greeted first when a parent came home.
Escalation
One of them names the unfairness ('that's not fair, he got more'). The other answers back with their own version of who got what last time. Because both react quickly and intensely to what happens around them, the volume rises within seconds. Emma may withdraw to her room when it gets too loud; Lucas may keep pressing because he experiences the withdrawal as being shut out. The original small unevenness is now a much bigger fight about whose version is right.
Repair
An adult can step in early with a simple, neutral rule for the recurring situations (a screen-time chart, taking turns choosing the movie, a snack-splitting rule). Emma can practice naming what she needs in the moment – 'I need ten minutes, then I'll come back' – instead of only withdrawing. Lucas, with adult support, can practice noticing when a 'not fair' feeling is really a 'I want my turn too' feeling, and saying that instead. The fairness signal stays; the explosion shrinks.
Patterns
The two patterns that most often appear in sibling reports. More are added as they pass professional review.
Siblings with a high fairness filter often notice whether things feel 'fair'.
Research term: Sibling rivalry / fairness
When one sibling escalates, the other answers back, and the conflict gains speed. Small disagreements quickly turn into a mutual escalation that is hard to stop once it is underway.
Research term: Coercion cycle (Patterson)
The report describes the bond between siblings, where rivalry typically emerges (and what it's really about), family roles you've taken on, friction patterns, and how you can support each other better. Both siblings get their own radar profile, and the report has a 5-6 minute audio summary.
Siblings fight because they share resources, parents and time with the only other person in the house also competing for them. It isn't a sign of poor parenting – it's how children practise negotiation, boundaries and fairness. Most researchers classify it as developmentally normal.
Dunn and Munn's classic observational study found that siblings aged 2–4 averaged one conflict every ten minutes of their shared waking time at home.
Yes, almost always. Frequency alone tells you little about severity. What matters isn't how often they fight, but how it plays out: whether there's repair afterwards, whether one consistently loses, and whether you're seeing signs of withdrawal, somatic symptoms or fear in one of the children.
The most effective step is changing the language you use as the adult mid-conflict. Instead of finding the culprit – which reinforces the rivalry – describe what you see and let the children find the solution. It breaks the judge role that tends to escalate things.
How SAMRUM connects patterns to concrete moves →
If they hit or push, break contact before talking. Name the situation without judgement: “No hitting. You both take five minutes in separate rooms.” Talk only when both nervous systems have come down. If it's frequent, or one child is consistently the one getting hurt, it's time for a professional.
Separate acknowledgement works better than neutrality in the middle of a fight. Mid-conflict, description is enough (“you're both angry right now”). Afterwards – one-on-one – each child can have your undivided attention: “How did you experience that?” It isn't taking sides; it's seeing each as an individual.
SAMRUM has an age-adapted test version for children from around age 6. A 7-year-old and a 14-year-old each get their own version – different questions, different length, different language. Scores are interpreted within age-adapted versions, so the report can compare patterns cautiously across ages – without treating children and teens as identical. Children's answers always stay private; reports only show patterns between you.
Sibling conflicts alone rarely require therapy. But if one child is systematically excluded, if physical violence recurs, if the youngest becomes afraid at home, or if the conflict affects sleep, school or eating for several weeks – it's time to talk to a professional, not just as a family.
Counselling and family therapy bring a professional into the room. SAMRUM is a tool you read yourselves at home, based on your own tests. The report doesn't single out one child and doesn't diagnose – it describes dynamics between you and suggests concrete steps. Many families use SAMRUM first and move on to a professional if needed.
The report describes personality patterns without using diagnoses or overlaying them. A child with ADHD still has a profile (structure, energy, reactivity) that can be read – and a sibling report can help you understand why the meeting between a diagnosis and another profile produces the pattern you know. SAMRUM replaces no professional assessment or intervention.
How it works
Create an account and take your own test. Then you know the system before the children answer.
Children from about age 6 get a short test written for children; teenagers from 13 get their own account. Nobody can see each other's answers.
Once both children have answered, you can buy the sibling report. If both are teenagers, the report is theirs – they can choose to share it with you.
The report requires two children in the family. If you have more, you can buy one report per sibling pair.
Honestly
Siblings argue – it is normal and often healthy, and SAMRUM helps you see the patterns in it. But if one child is systematically afraid of or cowed by the other, that is not rivalry. Then you need help from the school, a counsellor or a child psychologist.
The whole family
Sibling patterns are often tied to how each child gets along with you as parents. The parent–child reports and the family overview show that part.
There's no single trick, but the pattern can be broken. The most effective move is to shift from finding the culprit ("Who started it?") to describing what you see ("You're both frustrated") and letting the children find the solution – that dissolves the referee role that usually fuels the rivalry. SAMRUM shows you the underlying dynamic between the children, so you can meet it calmly instead of guessing.
No. All answers are private – including the children's. The report describes patterns between them but never shows what anyone answered individually. This applies regardless of age.
Yes. The test adapts to each age group automatically – a 7-year-old and a 14-year-old get completely different questions. Results are normalised so they can be meaningfully compared. The report accounts for the age difference when describing the dynamic.
Yes. SAMRUM doesn't distinguish between siblings, half-siblings, and step-siblings. The report shows the dynamics between children who live together and interact daily – regardless of biological relation. The roles between them are often more important than kinship.
A sibling report requires both to have answered. If one child doesn't want to, you can start with a parent-child report for the child who participates – and add the sibling report later when both are ready.
SAMRUM can show underlying patterns behind conflicts – like rivalry, role conflicts, or different needs for structure. But with persistent physical aggression, we always recommend contacting a professional. The report doesn't replace professional assessment.
You can add all children and purchase reports for the relationships you want to understand. With three children, you could get a report for each sibling pair or an overall family overview showing patterns across the group.
Read on
Parent-child · Siblings
When children say 'that's not fair,' it's not drama. It's a deep need to be treated as equal. And it starts earlier than you think.
3 min readParent-child · Siblings
One child explodes. The other withdraws. Same parents, same situation – completely different reactions. It's not random.
3 min readThe children are added afterwards – each with their own age-adapted test.