1) What is your type (6w5 or 6w7) and instinctual variant, and how positive are you that your variant is accurate?
I'm pretty sure that I'm 6w5, though I have also read 6w7 descriptions I really identify with. Perhaps I have reasonably balanced wings...? I think I'm sp/sx. However, I've also scored sp/so and even so/sp, so I'm kind of confused about that. I have identified the most with sp/sx descriptions, on the whole.
2) How would you describe your overall focus when alone versus in social situations?
Not really sure how to answer this. I think it's very important for me to find a balance with being alone and spending time with others. I am a classic INFJ in many ways and sometimes, especially after a busy day, I just can't wait to be alone and have a cup of tea, go online, read some poetry, whatever it may be. It really balances me out if I've been socializing a lot or just around people a lot. However - if I am alone too much, and especially if I have been dealing with anything painful in my life, I can get stuck in obsessive and painful thoughts that really cause me a lot of damage. So, being alone after a lot of people-time can balance me out; having people around when I've been alone a lot can also balance me out.
I like to help other people - though I'm getting warier of "lame ducks" than I used to be - and I think it's partly altruistic, partly selfish. The altruism is that I really believe that helping others is the right thing to do. The selfishness is that helping other people, and trying to work in their problems instead of my own for a while, takes me out of what can be a pretty dark place inside my head.
3) How would you describe your interaction style when in a group?
It very much depends on the size of the group and who is in it. If there are just one or two people who I already know and feel comfortable with, I can be very confident in a group situation. I have an instinctive understanding of how to include other people in group conversations, especially if they look a bit awkward or shy. Partly body language, opening up the circle to let them in, turning toward them briefly to include them in my comments, perhaps asking their opinion to draw them in, etc.
However - if it is a group where I don't know anyone and perhaps am not sure how much they want me there - I can feel so awkward and self-conscious myself. Worrying that I look foolish and awkward, wanting to participate but not sure how to get started, etc.
4) How would you describe your interaction style in one-on-one situations?
I try to be warm and friendly and draw people out. I'm quite diplomatic so I won't push if it's something they don't want to open up about. I will sometimes feel exposed if the other person asks me too many questions and will try to turn the convo back to them. If it's someone I get along well with, I love to have conversations even for hours on end. If it's someone I don't have much to talk about with or don't like that much, it can feel so awkward and strained and I desperately want to get away, though I'm also desperately trying not to show it.
5) How well does this description of your variant fit you?
"Self-pres/sexual
This type shares with the self-pres/social stacking the need to keep their environment in order. They also can appear One-like in that way. The differences revolve around the fact that they find their security more in their ability to attract a mate. They are concerned about how they are seen sexually. Their alliances to groups and authority can be quite conflicting. With the social instinct last in their stacking, this subtype can have a natural distrust of the social dynamic, especially when they fear it threatens their self-preservational concerns. The stance with regards to political or social concerns can vary wildly within this subtype. The self-pres is looking for safety and alliances with others, usually in a "going towards" fashion, but at the same time, the more assertive energy of the sexual instinct can manifest in a more counterphobic stance.
Their intimates are very important. Their issues with security are focused on their loved ones; their anxiety is closely tied to the pulse and feedback of the people closest to them. They are less outwardly fearful than the self-pres/social. While mainly phobic, their counterphobic nature shows in their sense of fun. They are drawn to intensity, and are likely to overcome fear in order to engage in adventures.(This is especially true with the Seven wing.)"
Mostly this is very accurate and it was one description which made me think I am sp/sx. The first bit, about keeping my environment in order, is less accurate.

But I relate to most of the rest of it. I worry about how I'm perceived sexually, and I worry about security a lot, but mainly in terms of people/people situations which make me feel secure or threatened. I do generally tend to have an eye for things that can go wrong, in physical terms too (ie. "this seatbelt is broken! oh no!") but that's not such a priority.
I relate EXTREMELY to the bits about looking for safety and alliances in a "going toward" fashion. It dovetails very well with the type of INFJ I am. I don't generally look outwardly fearful, so that's also accurate - my anxiety and obsessiveness come out more with those I'm close to and the subjects I tend to harp on with them. Generally I look really calm and have wondered if I'm a 9 (though I think so less and less.) It is also true that I have a strong sense of fun and love having adventures - but with an underlying current of security (whether that's having a place to stay for the next few nights while I travel; or being with someone I feel safe with; etc.)
I think a lot of the issues I experience in friendships and relationships have to do with security or the lack thereof. And also, handing over authority to others, without them even knowing about it. It's something I have to watch out for. If I am very attracted to someone I tend to focus on the fact that I feel "safe" with them (which is partly why I'm drawn to the perhaps somewhat sexist idea of a strong man who would be protective - though still leaving me my independence - and be something of an authority figure for me.) Then, when things don't work out the way I wanted, I feel so "unsafe" - suddenly exposed and alone. It also has to do with my hatred of inconsistency and my mistrust of people who say one thing and do another. So if I feel that someone has led me on or been dishonest about their feelings toward me, or cultivated my feelings mainly for purposes of their own, I can be harsh and rejecting and experience a disproportionate anger.
6) How did you decide on your variant? Was there anything that gave it away, or else made you change your mind from what you previously thought it was?
I read descriptions such as the above. But I am still not 100% certain. I don't identify so much with the sp-first descriptions of a 6 which talk about obsession with physical safety, constantly checking that I have enough food and supplies, etc...I can sometimes be quite the opposite. But I do view my home as a safe haven. I REALLY have identified with sp-first 6 descriptions which talk about the 6 "protecting" themselves by going toward others in a friendly fashion and thus "defusing" possible "danger." That is very, very much me.