this is in my opinion is the most obvious distinction.I was thinking I might be an E as well despite, a life time of being a loner.
I get confused at times as to how I behave with people I care about, and those I don't so much.
Anyway, my counselor asked me 2 questions that pretty much sealed the deal.
After telling him my life story he asked me.
"why do you never accept the invitations to go out after work with your workmates?"
My answer is because after 8 hours of wearing a mask, I just want to get away from people. At that point about the only person I can usually tolerate is my partner, and even then, at some point I will need some time alone.
He then asked me. "So on those rare occasions when you do go out with people, other than your partner or close friend,meaning multiple people, after the planned activity is complete. Do you crave more action? Like if you went to a concert, do you say "yes" if someone suggests coffee or a beer?
My answer; If someone I have the hots for, is going?, maybe. If I am also with my partner , or a best type of friend, and they find it important and would like me to accompany them, then most likely. However if no love interest is involved? 99% of the time, I go home. If I live with people? I walk. Just so I can collect my thoughts.
That is introversion.
When I am with people, I am often fully turned on and accessible, I just can't keep it up forever.Even if I love them.