It might change a little depending on the situation, but was there one out of the four that, when you read it, seemed to be more typical of you if you are not changing to fit a situation? If you could play ANY of the four roles, which would be the most comfortable for you?
("Behind the Scenes" was definitely correct for me.)
Actually the more I read about interaction styles, and after having read the Fe/Fi thread, I'm seriously questioning my own type.
[I don't think it helps that I've always been one for self-growth, and not staying 'stagnant', so it's probable I've explored all 8 functions somewhat decently, which is why I'm having issues with my 'real' type.]
Honestly?? Behind-the-scenes struck a chord w/ me, and I actually do think this is more how I am in my personal, private life. I'd much rather not play an active role, and I'm much more go-with-the-flow in terms of conversation (and my life in general). I don't try to steer conversations in one direction or another. I see where the conversations go. BUT if I'm anxious about a social interaction, and this is more of the introvert thing, I'll definitely 'plan' out what I want to talk about, or general conversation/interaction topics.
In general, I can actually be rather apathetic about how the interactions play out, when it boils down to it.

I want to see what happens naturally. I don't have any 'purpose/goal/course' in mind when I'm interacting with people and getting to know them.
But if there is a decision that needs to be reached, or in a work setting where a 'deliverable' needs to occur, then that's where I'll become much more Chart-the-Course. When I find myself in a work setting, I really can't stand meetings where people aren't capturing the main points and are going off on tangents, so I'll come to the forefront and be more directing in meetings, because I'm all about *clarity* and making sure people don't get offtrack. So I find myself in certain situations where people need more of a leader, that I become the leader and I become the person people 'look at' for an answer. So it's quite...confusing. I don't really choose this role, it just falls on me because I get annoyed with people missing important points, big picture, etc, and I somehow become the person people turn to for clarity and for a decisive answer. So at work, I'm *definitely* Chart-the-Course, because I definitely kick things up a notch at work and can't NOT get things moving. Edit: I'm not THE leader who sets the course of the meeting and decides the agenda, and I would never want to be that person - BUT I think I'm more of a ?driver? to keep things on track and focused. I'll often be quiet for 10 minutes or so, and then hop in with something, and then I find people tend to look at me during discussion topics, as if they WANT me to provide my input... (but I suppose this is getting off-topic for interaction styles)
Outside of Interaction Styles, and regarding J/P (?): And I guess I don't find myself terribly goal-oriented as far as my life goes....one person commented to me once that I just kinda float along and 'wait' for things to happen...although if I realize I'm wafting around too much I'll eventually take charge and kick myself in the ass to DO something.

So I go in phases of doing nothing for a while (i.e. no tangible goals), realizing I'm doing nothing, getting ancy to enact some change and not become 'stagnant', and then making a goal so I actually do something and grow.
Fi/Fe....honestly I think my Fi is off the charts, and if I'm honest with myself, I wonder whether I've 'trained' myself to be more Fe. It's a tough call, but I DO know that I relate to nearly everything under Fi when I read about it. When I read how others experience Fe...I'm just not sure if that's how I am. I know that that's how I choose to interact with everyone around me, and I'm very attune to other peoples' needs and am sensitive to their emotional states....but I'm just not sure, I almost think my Fi trumps my Fe....