6w7 it is. I spent two hours talking with my mum, who by my reckoning is 6w7, and this is her self-typing too. In as much as I can actually feel any sense of certainty, and as oxymoronic as this is, I'm sure I'm a 6 now.
Things we have in common (cliff's notes):
"Existential anxiety"--the dizziness of freedom*.
*see quote at bottom of post.
Sense of perfectionism. (I'm more aggressive about being the Logic Police than my mum, but our internal perfectionistic streak is definitely there.)
Very profound sense of moral/ethical integrity/commitment. If something is wrong, we say so. If something we believe is later proven wrong, you have to admit it's wrong and rethink things.
Constant vague wariness over everything. I suppose this is the notion of Sixey vigilance.
Instantaneous "sixth sense" (hurr hurr) for red flags that things are not as they appear, especially when people are hiding things.
Constant planning and anticipation. Also ties in the with "dizziness of freedom".
Sense of an inner void. Hence the planning and worrying, because it seems like there is no standard by which one can act or decide.
Strong sense of what "feels right". Loyalty to people close to us comes primarily from a sense of it being comfortable and "right". You feel good and nice when you're supportive of family and close friends.
Extreme paranoia over giving yourself over to ANYTHING that has not passed internal testing. Both Mum and I resist faith, but I've gone the route of eclecticism and picking and choosing philosophies that give me useful guiding principals. I'm not sure what Mum does.
"Anxiety, however, is a truly existential emotion and in order to better understand it, it is perhaps helpful to turn to the existential philosophers who made a point of studying anxiety in all its forms and all its manifestations. Kierkegaard defines anxiety as the "dizziness of freedom" and describes it as the underlying, all pervasive, universal condition of human existence. Anxiety is then, not fear of any one thing, but of the very condition of being conscious and of having to make choices in a world which does not make its meaning or goals transparent to us and which frequently enough seems inimicable to human aspirations and to human existence. It is this more fundamental emotion which most directly characterizes the core emotional state of type Six, not any of the more immediate fears, which often enough are simply place holders in the consciousness of the type Six personality. It is as though the Six feels their anxiety bubbling up to the center of consciousness and then scans the environment for something external to fear; this feared, but potentially manageable thing, can then occupy the Six's attention and avert it from that nameless horror that they sense might exist at the very heart of human existence."