Dynamic
Clashing Rule Sets
Step-parent and stepchild have different expectations for structure and rules. The child has internalized rules from another home.
In a blended family, two different rule sets often meet under one roof. The stepchild comes with habits and frames learned in another home; the step-parent has their own expectations. When they collide, it looks like a battle over rules – but underneath, it's more often about something else: who has the right to decide, and where the child's loyalty lies.
What it looks like
It rarely shows up as a conversation about rules. More often as a collision where both feel within their rights.
- "I don't usually" or "you don't get to decide that" come up when the step-parent sets a boundary.
- The child points to how things are done in the other home.
- The biological parent is pulled in to settle what applies.
- The step-parent is unsure how much they're even allowed to decide.
Way out
A general way out
The collision isn't solved by winning the rule, but by building the relationship before the authority – and letting the biological parent carry the boundaries at first.
- 01
Let the biological parent be the one who sets and enforces the rules at the start – the step-parent uses the time to build the relationship first.
- 02
Agree as adults on the few most important house rules, so the child isn't caught between two different answers.
- 03
Acknowledge that the child's "that's not how we do it at my place" is rarely defiance – it's two rule sets colliding, and a loyalty that needs room.
From an example report
How a report describes a pattern
The example report for Anne, Martin, Emma & Lucas shows a different pattern of the same kind – the card below is taken directly from it. The family is fictional, the report was generated by SAMRUM. Your own report shows the patterns that arise between you.
Family overview
Anne, Martin, Emma & Lucas
Conflict patterns
The Score That Never Balances
When both partners notice fairness closely and one is carrying more of the structural load, an internal ledger can form on both sides. Anne often notices whether tasks are distributed fairly at home, and Martin is very aware of whether things are fair in the family – two genuine fairness lenses pointed at the same household.
Anne ↔ Martin
Trigger
A long day where Anne has handled most of the planning – meals, homework, the kids' logistics – while Martin has been more in observer mode. Or a moment where Martin feels a decision was made without him, even though he wasn't pushing for input.
Escalation
Anne raises the imbalance, sometimes sharply because she is noticeably affected when things get stressful at home. Martin hears it as criticism and points out fairness from his side – what he did do, or what he wasn't asked about. The conversation drifts from the original issue into a tally, and both feel less seen.
Repair
Anne can name the depletion earlier, before it sharpens into a list. Martin can take more initiative on visible structural tasks without being asked, so Anne isn't always the one starting them. Both of you can use your existing repair pattern – you find your way back to each other – and step out of the tally faster by naming what you each actually want, not what the other didn't do.
Trigger
A long day where Anne has handled most of the planning – meals, homework, the kids' logistics – while Martin has been more in observer mode. Or a moment where Martin feels a decision was made without him, even though he wasn't pushing for input.
Escalation
Anne raises the imbalance, sometimes sharply because she is noticeably affected when things get stressful at home. Martin hears it as criticism and points out fairness from his side – what he did do, or what he wasn't asked about. The conversation drifts from the original issue into a tally, and both feel less seen.
Repair
Anne can name the depletion earlier, before it sharpens into a list. Martin can take more initiative on visible structural tasks without being asked, so Anne isn't always the one starting them. Both of you can use your existing repair pattern – you find your way back to each other – and step out of the tally faster by naming what you each actually want, not what the other didn't do.
Research grounding
Professional term: Authority/loyalty conflict (stepfamily rules)
When rules collide in a blended family, it's rarely about the rules themselves, but about authority and loyalty. When a step-parent enforces rules before the relationship is built, the child can experience it as a stranger deciding – and that triggers a loyalty conflict. The relationship has to hold before it can carry authority.
Based on Papernow's and Ganong & Coleman's research on stepfamilies.
Sources
- Papernow (2013)
- Ganong & Coleman (2017)
This is a short, research-based frame – not the full machinery. We use the complete mechanics internally when we read your own data in a report.
Research groundingProfessional term: Authority/loyalty conflict (stepfamily rules)Show research grounding
When rules collide in a blended family, it's rarely about the rules themselves, but about authority and loyalty. When a step-parent enforces rules before the relationship is built, the child can experience it as a stranger deciding – and that triggers a loyalty conflict. The relationship has to hold before it can carry authority.
Based on Papernow's and Ganong & Coleman's research on stepfamilies.
Sources
- Papernow (2013)
- Ganong & Coleman (2017)
This is a short, research-based frame – not the full machinery. We use the complete mechanics internally when we read your own data in a report.
Frequently asked questions
Is the step-parent not allowed to set any boundaries at all?
They are – but it's often more durable to wait with the big boundaries until the relationship is built. When a step-parent enforces rules before there's a relationship, the child easily experiences it as a stranger deciding, and a loyalty conflict is activated. At the start it usually works best for the biological parent to carry the boundaries, while the step-parent builds the relationship. Once the relationship holds, authority can follow.
Why does the child keep saying 'that's not how we do it at my place'?
Because the child actually has two homes with two rule sets – and because that sentence is often about more than rules. It's a way of holding on to the other home and the other parent. It's rarely defiance, but a loyalty that needs room. When you acknowledge that it's hard to have two sets of rules, rather than making it a power struggle, the resistance usually eases.
When will we feel like one family with shared rules?
It takes longer than most expect – often several years. Shared rules can't be decided into place; they grow as the relationships are built, and the child experiences the step-parent as someone it has a relationship with, not just someone who decides. What helps is to give the relationship time and keep the shared house rules few and clear in the meantime. You're not behind – that's how a blended family typically finds its shape.
Written by Thomas Silkjær, founder of SAMRUMLast updated
Is this your pattern?
You can recognize the collision here. But where your rule sets differ – and how you build the relationship before the authority – depends on your own answers. It starts with the free test.