(wrote that with "?" in mind, but it's universal anyway)
but IF your are LSI in socioncs, then you are dichotomy tested ISTJ in mbti,
because mbti is NOT based on the theories of functions, but on the dichotomies which are the same as the socionic ones.
OR you are originally a dichotomy tested ISTP in which case you are SLI
mbti throws functions into the game as extra bonus after the typing procedure. they are meaningless to the mbti dichotomy test.
and these bonus function explanations for each type are not even coherent in them selves.
but once people have read them and identified with one of their liking, they will fake their test replies to get the result they want. so if you like Ti you will suddenly test as ISTP, when you have tested as ISTJ before. (and if not, you are a random exception)
so i used to test as INFJ (my very first result ever was INFP but after reading only one profile, i changed my mind for two years of being an mbti fan).
i have breathed in the mbti and took everything out of it and learned to understand all the functions i my mbti time. but i did not compare types. only when i compared all types, it became apparent, that i can not be the INFJ, because i am not like the Fi people, but the Fi people are like the ISTJ Directors, so Fi must be J, so i figured socionics is right.
but the dichotomies of the mbti are right on and identical to socionics and the systems are behaving compatible with those testees who have never heard about functions.
and so the function theory of the American mbti influenced sites is just plain nonsense.
at the beginning of a text about an introverted types functions, they word functions to sound as if they were talking about the same that socioncs talks about. and they have to do that, because whatever they say about these functions must appear as if it is compatible with the extroverted types who have the same functions.
but then after one or two paragraphs about the function of introverted types, the mbti texts make a funny logical switch, to make it look, as if (for example) this so-far correct wording of introverted thinking could possibly explain the behavior of this individualistic introverted perceiver, who drives motorcycle like snake blisskin and tests as ISTP
when in reality, this introverted thinking CAN ONLY BE the explanation for the authoritarian strength of the director archetype who will allays test as ISTJ or INTJ in the mbti. because its the only thing, that can explain the director.
if you would actually understand Ti, if you could evoke it as theory of mind, then you would see how it becomes the dominant director. and observing people will proof the theory of mind correct. more than that, you will see how this Ti of the ISTJ director lives inside of the ESTP creating a subset of his features. again, observations proves theory of mind to be correct.
anyone who believes that Ti could possibly explain the individualistic doer (istp) has only copied the definitions, but failed to evoke (understand) them and compare this evoked understanding with ALL types who have Ti and so on.