....so to simplify MBTI INFP is Socionics IEI or INFp for example.
Introversion/Extroversion is the same in both theories, sensing/intuitive is the same, ethical/logical is the same.
The one difference which most people don't seem to know or notice, which leads me to believe they don't read socionics theory or their understanding of it is lacking (possible trolling included) is that socionics too has the J and P dichotomy...more specifically the following:
Rationality and irrationality (also: Judging / Perceiving or Shizotyme / Cyclotyme ) is one of the 4 Jungian dichotomies, and one of the 15 Reinin dichotomies.
Rational types are: ESE, LII, EIE, LSI, LIE, ESI, LSE, and EII. <=== MBTI Js
Irrational types are: ILE, SEI, SLE, IEI, SEE, ILI, IEE, and SLI. <=== MBTI Ps
(Also called shizotymes in early socionics literature)
Tend to plan ahead, make decisions early.
Are more often rigid and stubborn.
Do not like to change their decisions.
Tend to finish what they started.
Usually have stiff movements.
Usually more 'authoritarian' leadership style.
Low stress tolerance.
(Also called cyclotymes in early socionics literature)
Tend to wait and see, more spontaneous.
Are more often flexible and tolerant.
Change their decisions frequently.
Tend to start new things without finishing them.
Usually have gentle movements.
Usually more 'democratic' leadership style.
High stress tolerance.
This leads me to believe that if the types differ in the two systems, then the person who has been typed as such...is mistyped either in one or both systems due to certain variables that obscure and make the typing process difficult.
I'm still skeptical about functions as they can't be measured against anything and typing by function preference is one hell of an illogical guessing game imo. You can measure how far along both extremes of a dichotomy a person is and you can contrast too see objectively...something that can't be done with functions imo and I find that typing directly by deciding on function preference is a critical mistake when looked at logically from afar. One can assume function order based on type once it is established as an explanation for how the information processing leads to the 4 dichotomies.
It is still lacking in comparison to the BIG5 as that considers level of mental health in the form of neurotic tendencies or lack of these as a 5-th element to the equation.
For example a neurotic INFP can still be considered imo xNFP as the level of health and specific problems that manifest could be distorting the type. This would be the case of a social anxiety sufferer, who is in reality extroverted and will be once the problems are fixed.