this post was submitted on 13 Aug 2023
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Yes. We have plenty of studies indicating that IQ deviation (for lack of a better measurement) is heritable.
This is even observable casually - plenty of people gossip about $LOCAL_FAMILY having a history of Darwin award attempts, or how $OTHER_FAMILY is stuffed with straight-A engineering students.
However, it's only a component, not the whole story. Intelligence can be built up like muscle - Joe Average who trains will beat out Sally Smartypants who doesn't.
It's also going to be very dependant on upbringing which usually would go hand in hand, if someone grows up rich going to all the best schools and getting all the opportunities, not having to work when young etc they're probably going to end up more academically intelligent than someone who grew up in a family just barely getting by