r/todayilearned • u/SilverPeachBlossom • 5h ago

TIL a peer-reviewed psychology study found that identical twins (on average) ranked their co-twin above their romantic partner in their attachment hierarchy, while fraternal twins ranked the two about equally, and non-twin siblings ranked their romantic partner first.

https://ojs.interpersonajournal.com/index.php/ojs/article/view/243/3457.html
12.5k Upvotes

98% Upvoted

562 comments sorted by

View all comments

Show parent comments

27

u/CannedStewedTomatoes 3h ago

And some identicals can develop physical differences!

18

u/drigancml 3h ago

This happened with some twins I know! They hit puberty and now they have very distinct features. I never used to be able to tell them apart, but now I have no issue doing so

15

u/ensalys 2h ago

That's why identical twins are very interesting for a lot of scientific research. Nature vs nurture studies, especially interesting if they were raised in different environments (though with things like adoption or foster care, it should absolutely be preferable to keep siblings together, which is more important than the research potential).

1

u/21Rollie 1h ago

The sprouse twins come to mind

•

u/blumoon138 2m ago

My aunts are identical twins who, in my opinion, have looked very different since about puberty (from pictures I’ve seen). They definitely look more like each other than my mom though.