I agree on the Ne dom part also, and can be somewhat arrogant when it comes to trusting my perceptions (it's our strong point, so we have to get some right to). Sometimes it does feel like I see their thinking styles and get their underlying traits better than them. But I also miss a lot of what the person is. I've tried filling out a test for someone else before and it isn't that easy. There are very few people we know well enough to see all their motivations and dreams. People are always evolving and changing, and they don't let it all out. I think the best method I've found is cooperatively taking the test, so you can clarify points and make sure the questions are interpreted correctly. It's how I originally confirmed my type. I could bounce any parts I thought were ambiguous off the other person (who happened to be INFJ, so complemented my weak points in judgement nicely).