Redbird (
redbird) wrote2025-07-12 05:49 pm
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Family resemblances are complicated
via
oursin, something I found interesting: We still don't understand family resemblance, and some of what we thought we knew is mistaken, or might be.
This article describes research that used data from almost a million people: every Norwegian student who took a standardized test from 2007-2019.
Quoting the article: "The resemblance of twins cannot be reconciled with any model....The resemblance of adoptees cannot be reconciled with any model."
Adjusting a model to account better for twins makes it a poorer match of adoptive relationships, and vice versa. Any attempt to account for one of these moves the model away adopted siblings makes it fit twins less well, and vice versa.
( cut for length )
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png)
This article describes research that used data from almost a million people: every Norwegian student who took a standardized test from 2007-2019.
Quoting the article: "The resemblance of twins cannot be reconciled with any model....The resemblance of adoptees cannot be reconciled with any model."
Adjusting a model to account better for twins makes it a poorer match of adoptive relationships, and vice versa. Any attempt to account for one of these moves the model away adopted siblings makes it fit twins less well, and vice versa.
( cut for length )