Sounds interesting. I would love to hear more about the impulsive vs compulsive stuff as it relates to ADHD. I am like you quizzical. I spend hours going over and over things in my brain, but rarely get to the action stage. Though I can certainly be very impulsive too – mostly verbally, and money spending 
One online test I did said I did not have ADHD because I lacked enough hyperactivity symptoms (the only test I have taken that said I am unlikely to have ADHD!!), but I wonder about hyperactivity of the mind. I do fidget and fuss when I have to sit still, but not drastically, and I have never been one for bouncing off the walls, but my brain is in constant overdrive. And my thoughts tend to perseverate. I find it hard to progress beyond a certain point before I go back to the beginning and start the same thought process again. Very irritating!! And plenty distracting!
Back to my point….I would love an answer to quizzical’s questions too.
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