I took a Socionics test which gave me two results: ISTp and ISTj (I'm an ISTP in MBTI). Then, I was still looking around and found this:
This is one one of the best and closest description I've ever read for me, but I don't understand if describes MBTI's ISTP or Socionics's ISTp (SLI)/ISTj (LSI)
I'll really appreciate the precisation.