Until there is no objectively proved typing methods with ~100% accuracy the types are assumed only, not known. If you are not experienced typer it's good chance you may do not notice the mistake.
Socionics and MBTI use Jung's types. Preferences of MBTI are named as dichotomies in Socionics. The problem is that MBTI typing methods are not perfect and the type mb other than you think.
Do videointerview. Socionics is more advanced not in theory only, but also uses intuitive typing methods based on nonverbal.
http://www.the16types.info/vbulletin...=1#post1096450
Also the problem with questionnaires is that when people know types theory and have opinion about own type or wish more to get some types - they may intentionally or not to filter the answers what rises the chance of mistake.