I started learning Japanese after age 30 (currently around CEFR B1; JLPT N2), but I did it by moving to Japan. I don't know if the "language study", per se, provided the benefit, but the act of moving there so radically transformed my daily life that it was like being 20 years younger.
David Sedaris did a long interview on learning French (he also became proficient late in life) where he said something like: when you first start learning a language, everything is new and interesting. Eventually you become fluent, you get into a pattern, and 'living in a foreign country' is just 'living'. (heavily paraphrased -- I'll try to find the original).
Anyway, my point is that I think "learning a language" is probably as good as anything else when it comes to "brain stimulation", but in my opinion, the real value comes from being completely immersed in a new culture and kicked forcefully out of any sense of routine.
I've lived in Japan for a while and got N1 a decade ago
and I still love using it every day and don't take it for granted. It's kind of like flying on a plane. It always seems amazing to me, that I am doing this. I started as 28 and always thought it would be impossible.
It is funny that at the start literally everyone is interesting, even the most boring conversations. I was more of a blank slate and more likeable too. That's gone away, but the things I enjoy are more enjoyable in a deeper way, and the scope of things I can do is larger. Goes both ways imo.
> It is funny that at the start literally everyone is interesting, even the most boring conversations. I was more of a blank slate and more likeable too.
Yes! I've found the same thing.
> That's gone away
Also noticing this -- I knew that it would happen, but was surprised that it didn't take very much fluency before the natural human tendency to judge people re-appeared.
> ...but the things I enjoy are more enjoyable in a deeper way, and the scope of things I can do is larger. Goes both ways imo.
That's good to hear. I'm about to come back for another extended round, so I worry about the other stuff fading over time.
David Sedaris did a long interview on learning French (he also became proficient late in life) where he said something like: when you first start learning a language, everything is new and interesting. Eventually you become fluent, you get into a pattern, and 'living in a foreign country' is just 'living'. (heavily paraphrased -- I'll try to find the original).
Anyway, my point is that I think "learning a language" is probably as good as anything else when it comes to "brain stimulation", but in my opinion, the real value comes from being completely immersed in a new culture and kicked forcefully out of any sense of routine.
Edit: interview is here - https://www.thisamericanlife.org/165/transcript
Relevant bit:
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Someday, David says, he'll be more comfortable in French. His accent will improve and that daily anxiety will be removed from his life.
David Sedaris: But when it is removed from me, then I probably won't be interested in living here anymore. I'll probably leave.
Ira Glass: Because it'll be just like living back home.
David Sedaris: Plus the more you learn, the more disappointed you wind up being. It's easy to like somebody when you don't know what they're saying.