I've been trying to figure out my roommate for a while now... and I think I've finally come to the conclusion that he is stuck in a Ti/Si loop. (For an explanation on dom-ter loops refer to: Dominant/Tertiary Loops and Common Personality Disorders)
I'm curious what some of the behaviors of one stuck in this particular way-too-introverted world would look like.
Description of my roommate: He displays a good bit of Ti. However, I never really picked up on any Se or Ne. He definitely didn't strike me as an INTJ. We clash quite a bit with our different modes of thinking. He definitely lacked Fi, and has very inferior Fe. However, he is controlling in a way that might distinguish one to be more of a J type, rather than a P. But he's careless and irresponsible when it comes to a lot of the things he needs to do. For example, he'll complain to me about not taking out the trash, and then will continue to talk down to me in a very negative fashion. Or constantly rearranges my belongings, or belongings of guest who come to visit me (he never has guests). But he can't seem to get our water bill paid on time. He's often paranoid. Very into conspiracy theories. He's accused me of things I've never done, such as snooping through his room. He deems me to be reckless and irresponsible though I've never not paid him money for any of the bills and always clean up after myself, and often after him, too. He micromanages me when I cook or clean. And his words are always loaded. His method for asking me to do something is always indirect. Ex. "You know to wipe down the surface of the washer when you spill detergent on it, right?" He sorta/kinda drives me completely insane. His emotions always seemed a bit forced and fake. His laugh is forced and always loud. He talks to himself and hums a lot. I mention the humming, because he often seems to be faking a level of comfort and happiness. He really seems to stick to things that he already knows and is comfortable with. He's not very adventurous when it comes to food or anything really. If he's found a method for doing something, he sticks with it. He often appears OCD due to his rigidness. Like according to him, my keys MUST go on a very specific nail of the keyholder by the door. And my jacket must go on a very specific side of the jacket holder. And the one couch is off limits to me, because that's where he sits. Etc. This had lead me to think he uses more Si. Perhaps my thinking is incorrect?
Those caught in a Si/Ti and Ti/Si loop are prone to the schizotypal personality disorder, according to my source. But I don't know that I fully understand it. How similar is it to schizophrenia?
Edit: I forgot the second part of my questioning.
How WOULD one develop their less used Ne? I'm not sure how Ne truly works and wouldn't know how an INTP should exercise that side of their self.