Twin study suggests rationality and intelligence share the same genetic roots - the study suggests that being irrational, or making illogical choices, might simply be another way of measuring lower intelligence.

[u/mvea]

https://www.psypost.org/twin-study-suggests-rationality-and-intelligence-share-the-same-genetic-roots/

[u/LordFondleJoy]

So instead of saying "He's an idiot" you could say "He's irrational" and it would basically indicate the same issue? Good to know.

[u/Limemill → u/[deleted]]

How? I thought it actually draws parallels between IQ and rationality, whereas in your case someone who clearly has a high IQ acts irrationally, so it seems to contradict this study. But also, having lived in a well-known university town, I also had plenty of similar experiences: I’ve seen lots of PhDs and postdocs who were absolutely lost in life outside of academia. Making strange choices, etc. I suspect neurodivergence plays a big part in it

[u/LeMooseChocolat → u/Limemill]

Well it depends what your goal is, rationality is not a fixed outcome, you can be rational in different ways in the same situation with different goals or info.