This should be a relatively long post.. I'm about to elaborately describe my personality to see if anyone can help me further determine my type.
Whenever I take a Myers-Briggs test (and even when I took the Keirsey Temperament Sorter) it comes out as an INTP (Rationale for the KTS). The profile descriptions fairly accurately describe me; mainly my love of planning things whilst nearly always failing to carry out the plan. I also have the tendency to copy others when talking to them. I'm constantly thinking about anything and everything, my thoughts so random I can't remember what I was thinking about a minute before for reference.
While I like logic, and debating (occasionally taking a position simply to argue it), I can be emotional. When I used to live with my mom and stepdad, my dad would always pick arguments with me about what I was doing wrong. He would tell me to go get my backpack so he could look through it (it was always very messy and unorganized, with many unfinished assignments), and I would have to reluctantly do so (because I knew what would follow for the next 2-3 hours). He would open it up, and I would sit there fearing what he would find out. He'd question this and that, and he would argue my answer. Soon enough I was in tears because he wouldn't listen to anything I was saying and would pick out every fallacy I had, not just relating to school. After an hour and a half, you can imagine I would be tired of this yelling and arguing over something I already criticized myself with. Basically, the constant and persistent pressure and importance he was putting into every point of my life was stressing me out. When he finally did let me go to bed, I would be in tears until I woke up the next morning in depression. The state would continue for 1-2 days until I would be back to my normal self (before it happened again).
After I didn't have to deal with this anymore, depression was rare, but did occasionally come about. Presently I come across moods of elation more often, and while listening to music, I'll often get a certain type of feeling. I can also get quite irritated by the smallest of things, while not so much by the larger (which ties in with my annoying tendency to often focus on small details and trivial things). Often, I'll point out someone's grammatical or spelling errors. Sometimes, when watching a movie such as Titanic, I can feel somewhat emotional at the end, and when trying hard enough (for the sake of experimenting) can produce one or two tears. If I'm ever emotional in relationships, it seems only to be copying what the other person is feeling.. which also ties in with my capability to look at things from another's perspective.
That would be the main reason I question my supposed INTP personality. The T percentage is usually quite high on the questionnaires, however taking into account all of the above I would seem to have quite a few F characteristics. I am quite blunt about things, but do sometimes worry about hurting the other person's feelings if I love or care about them. I'm also constantly criticizing anything and everything, putting extra importance on being unbiased but often questioning if I am biased. I'm also guilty when I don't use something someone really close to me, such as my mom, got for me. I do have a love of debating, and trust science/logical arguments much more than feeling, which I see clearly and solely as evolutionary and explained with psychology (explaining my tendency to distrust any emotions I do get, and/or religous experiences I might hear about). I feel it is very important to donate to charity and help others more unfortunate than us, however, knowing it's wrong, feel quite annoyed at others less intelligent than me. It would seem that my dominant logical tendencies, if any, are consciously applied.
I am constantly procrastinating and am very lazy, so I don't question my Perceiving vs. Judging. I do question my iNtuition vs. Sensing, due to my obsession with small details (as mentioned above). However, I am constantly thinking about the future and don't have a very firm grasp on reality. I'm quite the introvert, however can be quite open to conversation after knowing the person for a few days (depending on the person and how comfortable I feel with them). I also offer personal details openly without caring much. I'm constantly spending my time alone, but if out with a close friend could be having a great time (I just rarely make close relationships).
I apologize for the length, but perhaps another's insight into this could give me a clearer understanding of my supposed NT temperament (both of which, N and T, are questionable).