The cards. THE CARDS.
Apparently my half siblings from my dad's first marriage put baby guinea pigs in an unplugged toaster. Just thought I'd mention. (they were fine)
Now I'm gonna have to find the recording where I'm reading a John Cage essay while friends of mine are making strange noises...
DO IT.
Again, everything else, I'm sure this sort of behavioural quirk doesn't have to do with personality type directly, but the underlying causes in the brain that govern such behaviours, and personality, anyway.
For instance, I no doubt have ADHD; for me, life is like experiencing a Festival of Holy Sh*t, a cacophony of thoughts on an almost manic level, whether I'm awake or asleep. That's just how I'm wired, and it probably does contribute to my personality, and MBTI, in the first place.
I have some wildly extraverted feeling, that's for sure. But my touchy, high-strung nervous system demands that I introvert away from stimuli, so I'm stuck in my inner world for life. Still, that incredible pool of hyperactive mental energy
needs to be released, and since I have a social bent, that's where it tends to be directed. Thus, I am a nutcase. An INFruitcake.
Also, insecurity can never be overlooked. Never mind MBTI, many people are
very self conscious in public, whether or not they appear to be alone or not. Some people are just a lot more confident, and express it more where ever they are. It's quite the mixed bag.