Really, type identification to me becomes a function of how
I act around
them, since I tend to act differently around different people, whether or not I realize it. How I perceive them perceiving me, or how they act toward me, or how they act in general, also, of course, plays into it.
Time for a disclaimer. I'm just gonna lay my thoughts out there, from my perspective, as far as how certain traits tend to come across to me most of the time. No hard feelings intended. Most of these only apply to
strong types, anyway, and these are by and large from a
first impression of others. I know that traits that I hold will come across negatively to other types, and that doesn't bother me too much, because I can bend to accommodate them pretty easily if I need to

Also, keep in mind that I don't use these tendencies to judge other peoples' characters.. I can get along with all types and recognize the benefit of each trait.
If I find myself acquiescing to their arguments or saying, "well.. that
could be true,"
struggling to find middle ground between us 
steam

, or perceiving them as admirably decisive, somewhat closed-minded, or too structured and rigid?
J.
If they understand me "naturally," without me consciously or subconsciously feeling the need to tailor my speech into some sort of sequence when I talk to them?
N, or
xNxP if this holds
very true.
If we can muse about ideas and just jump from topic to topic without getting bored?
xNxP, likely
xNTP or
ENxP. An
ENTP and I can keep this up
forever.
If I find that I end up having to console them in the short term but realize that they'll likely get over their issues the next day once they've had time to cool down or analyze their situation?
F.
If I find that I can just shove my extroversion onto them without worrying about it?
ExxP.
If I learn more about them through indirect rather than direct communication?
I.
If they're a girl and they're all giggly and shy when I probe them with questions?
INxP.
If they won't stop apologizing to me for things that I don't see as a big deal?
INFP, possibly any other
NF, too.
If they come across to me,
from my initial perspective, as though they
could be perceived as abrasive, direct, blunt, or insensitive by other people?
T.
Thank you, and goodnight.