My boyfriend (of 6 years now!) has tested as an ISTJ on a couple of tests.. He has a lot of very typical ISTJ traits. He is quite stubborn, but very polite, conformist, a good citizen, usually very peaceful, everybody likes him, he works hard, is very clean and orderly, etc. He is also very self-assured and decisive, and either chose "very accurate" or "very inaccurate" on the MBTI test questions (unlike me, i'm quite indecisive)
However, he is not as boring&dull as ISTJs are supposed to be according to the description.. First of all he is highly intelligent, is very interested in politics, he studied psychology in college before becomining a graphics designer. He likes theory and explaining things with theory/graphs etc. Although he is a tradional/conservative conformist when it comes to his own behavior, he is very pragmatic and liberal when discussing things. He will never say "thiefs are bad people" but will say that we shouldn't judge them because they might have good reasons to do what they do, and that things are complex etc. etc. He is also somewhat interested in philosophy (but doesn't think there is any reason to think too much about those things).
Although he came from a religious family he is not religious at all, rather an atheist. But he doesn't talk about that/bother others about it. And would never confront his family about it (they're very nice, and wouldn't ask him about his beliefs, but if they would he would change the subject and if they kept pushing he would say he doesn't believe).
He is really interested in improving and learning more when it comes to graphics design and computers. Often trying new operating systems, programs etc. And he is very much into the latest news, especially when it comes to technology, world news, politics etc.
He also gets very enthusiastic sometimes, when talking about his job, new technology (say, the new iOS5 that was introduced a while ago), when talking about a dragon he killed in World of Warcraft etc. He almost jumps up and down with a huge smile - like a little boy! Not very typical of an ISTJ, is it?
He also has a very good sense of humor, and we understand each other and have jokes that nobody else understands, but if any of us makes a reference, we start giggle :P And he smiles a lot.
He can be very serious though, and is very practical and down-to-earth. He thinks I'm "stupid" sometimes, and can be very harsh and direct. He is very annoyed with my mess, even though I try to be better and clean more, it's never good enough for him. He is very clean and there is no mess anywhere (all my friends are jealous I have a boyfriend like that ;)
Another reason I'm wondering if he is ISTJ or INTJ is that a relationship between ENFP and ISTJ is supposed to be really bad. And ours isn't. I guess that's because he's patient, finds me very "cute" and loves me very much, and I'm usually quite easy-going (i'll go to the same restaurant every single time because that's one of the few places he'll go, even though I would like to go different places), and I'll do pretty much anything if I can do it with him ^^
He's not interested in traveling at all, nor in exploring/seeing new places. He is kind of picky when it comes to food, told me he wouldn't mind eating the same food every day, didn't like vegetables but has improved a lot during the years with me..
He is VERY independent and needs a lot of space. He has a good self-asteem and doesn't need nor like compliments nor positive affirmation. He gets what he needs socially at work and with me, and doesn't like to attend parties etc. He is "friends" with everyone at his job, but keeps them at a distance and doesn't really tell them anything. I'm the only one he is open to, but he doesn't want to tell me everything either.. If he attends a party it is because he feels he "has to", and he wants me to come with him. However, when at a party, he is fun, smiling, joking and talks to everyone. He tells me that is just a mask though and that it wears him out. He doesn't feel like he can be himself.
When there is stress at his work he gets in a very bad mood and can't stop thinking about it when home. He also doesn't sleep well and he seems to be quite depressed when it's like that. When he is in a bad mood (because of work usually) there's NOTHING I can do about it, and if I try to give him advice he gets annoyed.
In his free time he works, tries to increase his competence and learn new things, reads blogs, forums, twitter, things that have to do with his work or interests. He also plays World of Warcraft a couple of hours every day.
He is NEVER addicted to anything though, neither World of Warcraft nor coffee. He usually drinks quite a lot of coffee but has no problem going days without coffee. He also stopped smoking the day we started going out (I told him I didn't like smoking), and I really admire that!
Does this sound like an ISTJ or an INTJ? I think he sounds mostly like an ISTJ, however his idealistic enthusiasm and need for improvement/increase his competence sounds like an INTJ to me. He does not like doing repetative things with a lot of detail for a long time, and he needs to see that he is going somewhere when it comes to his career. He gets annoyed with people at his work who just do what they have to do and nothing else. He feels everyone should work hard and do their best. Always try to improve.
Also the fact that he is very interesting and funny, likes World of Warcraft, LOTR, sitcoms, South Park etc. And when into something he forgets about the time. Like, he will plan to go to bed, but find a really interesting article and he forgets all about going to bed! Not very istj? He is not happy with himself when he sleeps long (he wants to get up early every morning)and has quite high standards for himself though.. My two ISTJ (female) friends are much more happy where they are and they are more "boring", and wouldn't mind staying in their current jobs for the rest of their lives..
ISTJ or INTJ?
edit: I guess I should add that English is not my native language, so please excuse grammar/spelling mistakes and odd choice of words! Thanks! :)