If Aspie development (or maturity) is about 2/3rd's chronological age, I'm 25 emotionally, and by the IQ formula, I might be 43, while I'm 38 chronologically.
I also doubt the IQ formula is applicable for adults, since mental development slows down gradually with age, and reaching its high point, begins to decline.
I might be 25 emotionally, but how about the age one wishes to live at? I would choose a kid's age, I think.
And, it is true, that perceived age depends on the situation, the mood, how drained I am at the moment, how my mind is set to take in information. For example, if I read a lot, listen to music for hours, do solitary activities, the resulting mind setting temporary might render me less able to interact the world around me, so that I can do only on a fairly basic level for some time.
When I'm with a group of people who are a little younger in mind just like me, I can be more myself, and feel younger too. For example, on a friendly bicycle tour that I participate in every summer.
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Another non-English speaking - DX'd at age 38
"Aut viam inveniam aut faciam." (Hannibal) - Latin for "I'll either find a way or make one."