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The Claire Byrne Show

What to do if sibling rivalry is affecting your house?

12 May 2026

Transcription

Chapter 1: What makes sibling relationships so tricky?

1.887 - 29.093 Claire Byrne

The Clare Byrne Show on Newstalk with Aviva Insurance. You don't fight, do you, with anyone quite like how you fight with your siblings? It can go from zero to 100 in an instant and back down then as quickly again. So what is it that makes these relationships so tricky and how do we navigate it? Well, psychotherapist Michelle Flynn is with me here in the studio now. Hello, Michelle.

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29.242 - 33.467 Claire Byrne

Morning, Clare. Do you agree with that, that we don't fight with anybody else like we do with our siblings?

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34.128 - 45.402 Michelle Flynn

Yeah, definitely not. Actually, I said to my six-year-old son this morning, you know, what's the good thing about having a brother and a sister? And he said, well, the good thing is about we have loads of fun together. The worst thing is they're just so annoying.

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Chapter 2: How do birth order and family roles affect sibling dynamics?

45.802 - 61.567 Michelle Flynn

It's like we know this kind of even from when we're little. Sibling relationships are tricky. And I think what's really interesting is that they don't get much attention, sibling relationships, kind of even in like in psychology or in psychotherapy. It's not something that gets a lot of attention.

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62.067 - 73.727 Michelle Flynn

But actually, like these relationships are uniquely powerful and they're the blueprint, I think, Clare, for how we experience ourself and how we experience other relationships later in life.

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73.707 - 86.316 Claire Byrne

And there's all sorts of things to consider your place in the family, you know, whether you're the youngest or the oldest or in the middle, that sort of dictates how you will interact with your siblings, doesn't it? And how you'll interact with other people then when you get outside the family unit.

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86.633 - 101.698 Michelle Flynn

Yeah, absolutely. I think, and there definitely is something about the order that you're born. So like, you know, firstborn are generally the ones who take on more responsibility. They're the kind of people that I might see in my practice with perfectionist tendencies. I'm talking about myself here.

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Chapter 3: What roles do siblings typically take on in a family?

102.32 - 123.818 Michelle Flynn

But, you know, so there is those kinds of roles. But then there's also the, you know, families organise themselves differently. And to sort of survive emotionally. So that might be that somebody takes on the role, for example, of being the caretaker. Somebody else might be the clown. Someone else is the rebel. And these are all roles that kind of happen in order to make the system function.

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123.858 - 130.287 Michelle Flynn

And they're very unconscious. And like these roles can work when we're little and they can get us really far.

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130.827 - 149.57 Michelle Flynn

But often what happens and this is what I see in my practice is then as adults, these roles don't serve you anymore, particularly the roles that force you into position of doing too much, overachieving, being the one to always support the other siblings, show up for parents and, you know, do the really hard stuff.

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149.59 - 164.599 Claire Byrne

Mm hmm. So when it comes to conflict in a family then, is it just anecdotal or is it based in fact that the siblings who are born closest together, so if you have, you know, one, two, three, that one and two will argue more than one and three will argue?

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165.237 - 184.25 Michelle Flynn

Well, I don't know. I mean, I think that's probably anecdotal. Again, you see, like what's really interesting is that, you know, we might be raised in the same house as such, but we're not raised in the same family because by the time another sibling comes along, the situation in the family system is going to have changed. There might be more financial pressure.

184.31 - 207.073 Michelle Flynn

There might be one parent is working more now. There might be grief in the family system. So it really depends on what is happening in the family system. So, you know, when I meet with people in my therapy room, they'll often have a very clear narrative around their family situation and what it was like growing up. And that might sound completely different to their sibling's narrative.

207.094 - 228.218 Michelle Flynn

So, for example, one child might experience the parent as being loving and attentive available all of those things home from school maybe when they got in all of that and then for example something happens in the family system there's a divorce there's a grandparent that passes away and then suddenly that parent is less attentive maybe more anxious maybe

228.198 - 242.853 Michelle Flynn

doesn't maybe have the emotional resources and then the system has to adapt again. So, you know, the narratives or how we experience our childhoods are often very different. And I think that that depends less on where you come in the family and more about what's happening in the family.

243.113 - 252.223 Claire Byrne

Well, let's come back then to the siblings who are rivals or who fight. How do you deal with that as a parent when you see, say, in young children?

Chapter 4: How can parents manage sibling rivalry effectively?

252.283 - 256.467 Claire Byrne

Do you get involved? Do you let them fight it out? How do you how do you treat it?

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256.447 - 269.863 Michelle Flynn

Yeah, I mean, again, and I think it's age dependent, right? This can look different for somebody who has teenage kids to small kids. I'm a big advocate, Clare. I have three small kids of my own. I had, you know, three under three. So they're really close together and the fights are really intense.

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270.204 - 289.679 Michelle Flynn

But I think it's really important for them to have an experience of learning how to navigate this themselves. Because if you remember, like this is your first experience of how you navigate friendships, how you navigate rivalry, right? belonging, fairness, what loyalty means, you know, all of these things you're learning in those early relationships.

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289.699 - 308.076 Michelle Flynn

So obviously being there to support is important from a parent's point of view, but I think as much as you can allowing the kids to to navigate that for themselves is really important. And this is also done by modelling, right? So, like, how are you modelling this with your partner? How are you navigating relationships? Or with your own siblings?

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308.477 - 315.208 Michelle Flynn

Like, what do your kids see you doing with your own family? Do you know? That's how kids learn.

315.969 - 319.094 Claire Byrne

So, let them fight it out then, really, is what you're saying.

319.114 - 322.62 Michelle Flynn

Like, I suppose within reason. Do you know, we're not going to let them kill each other.

Chapter 5: What should parents consider when siblings fight?

322.8 - 340.4 Michelle Flynn

Right. But I do think that it's really important for them to learn the tools about how to resolve these issues, because this is how they're going to be able to do this again when they're older. Like I think of it as like these early relationships that we have, you know, when the brain is malleable, when the brain is learning and developing.

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340.78 - 354.578 Michelle Flynn

This is what shapes how we feel about ourselves and how we feel about relationships later on in life. Do you know? Because I can even see it now at home. Like one of my sons is the... the clown and he makes jokes and he gets the feedback from the other two.

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354.618 - 369.04 Michelle Flynn

Oh, he's so funny, you know, and that's where we start to internalize a kind of image of who we are is from the feedback that we get from our siblings and from those early relationships. So giving them the tools, modeling the tools, I think is the best.

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369.02 - 388.277 Claire Byrne

Some questions coming in. Let's go to this one. My older teenage son despises his younger teenage brother. They absolutely kill each other. It's so difficult. They lost their dad suddenly recently enough and it's really hard to solo parent. Have you any ideas how to manage? So there's a lot going on in that family, isn't there?

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388.257 - 406.418 Michelle Flynn

Oh my gosh, Clare. Yeah, that really is heartbreaking. And I suppose the first thing I would say is to normalise it. Do you know, they've been through a trauma, they're in crisis at the moment, like this is a family in survival mode. So it makes sense. I mean, we take out our big emotions on the people that we feel closest to.

406.478 - 421.638 Michelle Flynn

So it's normal that there's going to be conflict and upheaval in this family at the moment. I mean, I think for your listener, I think something that's really important is Like, how is she minding herself in this? How is she resourcing herself to be able then to show up for those two boys?

421.678 - 443.07 Michelle Flynn

And again, I think it is about, you know, trusting that they will be able to navigate this loss and this grief and being able to tolerate some of those difficult emotions rather than trying to fix it for them. Because I think as parents, we often jump in and try and fix the problem or take away the pain, but actually sometimes just allowing the process to unfold and

443.05 - 446.239 Michelle Flynn

like within reason, I think is really important. Another one.

446.661 - 455.085 Claire Byrne

The teenage cousins kill each other when they get together. And this is the critical bit. But I can't control my siblings' children, can I?

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