I think there is some back and forth in commentary on high iq/emotional or mental issues, as to the higher incidence. It is debatable.
I think when a very high potential/high iq person does have emotional issues, the feelings can be so intense, the thoughts of things that can go wrong can get so detailed/deep, issues can be magnified, and perhaps escalate sooner than would normally occur.
Social isolation, and feelings of 'why am I here?' are issues that gt people often have to contend with more often and sooner in life than most others. We are currently helping my ds9 deal with some of this. Yesterday he said, 'but I still don't know what is the point of life.' I have varying levels of complex conversations with him on this question, but at bedtime, I just said, well you'll have another 80 or so years to ponder it.
I have not experienced the multi-track thinking you mention, sounds interesting. The 'different' things I notice about my brain (approx "eg") - being able to hold in my head what someone is saying for at least 15-20 seconds without hearing them, while I complete my own thoughts, and then pause to sort of 'hear' them while they are awaiting a reply (someone comes to my desk while I'm working and just starts talking without waiting for me to look up or acknowledge them). Visual memory, if I need to find something I see pictures of where I last saw it, that sort of thing. Extremely high logical reasoning ability, when the right sort of problem is presented, for instance data analysis issues, visual/spatial problems. None of these are strictly 'gt' except maybe the last.
And my husband doesn't understand my brain either. But then again, I don't get his.
