Understanding the difference between positivism and negativism helped me to determine my own type, because for the longest time it was between IEE and ILE (although deep down I knew I was a feeler). But nowadays I don't really need Reinin to type, because I know quite well what the types look like -- I can spot a Beta ST from a mile away (unfortunately those seem to be the predominant STs where I'm at). The difference between logic and ethics is usually obvious, as is the difference between sensing and intuition.
By the way, I don't think you're EII. You're ILI. Here's a video of your dual:



