To MBTI

Jung typology does NOT have a 4 letter code, so, for instance, there is no INFP in Jung typology, what there is is a Fi type with auxiliary intuition (Fi-n) (and as I said on the last note, INFP can be both a Ni-f or a Fi-n; And Fi-n can be either INFP or INFJ). On MBTI, you evaluate personality in 4 separate dimensions: E vs I, N vs S, F vs T, P vs J. There is no notion of a dominant function on MBTI, the MBTI is indifferent to which dominant function you have.

However, one might think: But the equivalent of a Fi-n on MBTI should be simply INFx, right? Well, first, MBTI INFx is not sensible to a dominant function, for a Fi-n type, F>N is a must, while for a INF can be F>N or N>F. Second thing, even if we were to short this conversion to Fi and say “would not Fi and IXFX (supposing the preference for Feeling is higher than the N/S one) equivalent?” My answer is yes and no.

Yes because IXFX and Fi type both means a cross between feeling and introversion. However, the E/I concepts of MBTI are very social focused: So a IXFX type might be, in a very superficial-quick description for the sake of the example explaining the concept, would be a shy person that has values, while the Fi type means a person who is very guarded and cautioned about their feelings, which the feelings are intense. So the no answer comes because there is this difference on the descriptions, that happens because Jung E/I is not social focused and instead is very wide, while the MBTI facets are mostly focused on how social someone is or not. For example, Jung presents things like external/internal orientation (which on MBTI seems to almost disappears because there is a N/S relationship with this), notions such as being cautioned (on the I side) versus being reckless (on the E side) and goes on. Jung E/I, at least in my own opinion, is deeper and wider than the E/I from MBTI even if it have its statistical flaws and some stuff needs to be moved, however this overly focus on MBTI E/I into just being social or not social, basically making E/I only people focused, really takes some depth out. Here it is a converter and acronyms for each of the 31 types I had drawn earlier – remember that, if somebody has undifferentiated functions or undifferentiated attitude type (E/I), then the person will very likely get different MBTI test results.