Sounds mad but it’s true, honest! If you have 3 kids…

[Nunaluna]

Same dad, no miscarriages to ‘break the chain’, if the first 2 are opposite sex, the third will be whatever number 2 was - so BGG, or GBB. Not BGB, or GBG.

It sounds crazy but it’s something I noticed ages ago - every time somebody announces they’re having a third, and they have one of each, I know it will be the same as the second child.

Prove me wrong, Mumsnetters!

GGB here (me and my siblings)

my sister and I both have 1 and they are boys.

my SIL I pg. We await what it’ll be!

I have GBG
My son has GBG

Yes I can definitely think of more families with this pattern!

Sorry, you’re wrong, there’s no set birth sex chain. I had four children…two girls, then two boys. It’s down to the dad anyway 👶🏻👶🏻👶🏻👶🏻

How ridiculous- bbgggb here

You need to look up “anecdotal fallacy”.

In fact (large family) we have

GGGGGBB

of those we have

BBBG
GGB
GG
GGBG
BG
GB

No one further down has more than 2 children except a cousin who’s on his 2nd marriage and has GGG.

the next generation actually only has 2 families where there is 2 children of opposite sex.

Everyone else has 1 child or 2 of the same sex!

I'd say you don't know enough people to prove yourself right.

Yep, same in my family

Your theory works with my family.

I have GBB
my sister has BGG
my other sister also has BGG

Nope - boy, girl, boy then girl

Not true- I had boy girl boy!

Not true , my mum had GGB

My Dad and his siblings are GBGBGGBB

I have 5, all the same dad, GGBBG

I have girl boy girl :)

It’s 50/50 every time 😂

Nope. I have 4 kids to same dad. No miscarriages etc too and had GBGB 😊

Wrong. Three friends have gbg

Not true. Same Dad - no miscarriages. I have BGB.

Not always true. My friends with 3 DCs have:

GGB
BBG
BGG
GGB
GBG

BBG here

I have GBG so it doesn’t work out for me

I have gbb, my mum had bgg and my mil had bbg so works for us haha

But there is evidence that the sex of births is not independent of previous births, as has been shown in a paper linked twice in this thread. It is worrying that our society and education systems produce individuals like you who are completely devoid of any empirical curiosity or statistical intuition. And you come here throwing messages like "Even someone who has not had any formal exposure to the field of Probability should have the sense to realise ..." like you are on some sort of higher intellectual pedestal, which obviously rubs people the wrong way because you are displaying traits of both arrogance and ignorance.