Not exactly. It's possible, although probably less likely, that similar macro expressions of the brain, called behavior, could result from many different internal configurations within the brain. I guess this study is ruling out some level of variance in the internal structures.

I dont personally think so. It's non obvious to me at what level similar personalities should show physical similarities, and it's very interesting that, for example, gender doesn't result in as much similarity.

It's also interesting to consider the cases where looking at imagery didn't result in similar fmri scans despite similar personality.

With this sort of research they may be able to do brain scans and tell you about your own personality, and that's wild.

It's only tautological if you take "personality" to literally mean "pattern of neurological responses to similar sensory input".

This is a pretty non-standard way of defining "personality", and certainly not the way people learn the word...

So no it's not tautological.

No that's like saying listening to Bach IS such and such brain activity, if analized at right level. Even if everyone's brain responded identically to Bach, it tells us nothing about the meaning or actual experience aesthetically, emotionally, personally etc.

Reductionism is a menace.

How personalities are or are not shaped by the cultures that people are raised in is the takeaway, I think? Why are some people able to make the leap in perspective to understanding another culture? If it's just how you're raised, then why is this possible?

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no, because similar personalities do not have to mean the same brain activity patterns, but this study shows it likely do.

That’s what I gathered too. We just validated the study internet friend.