Functions, schmunctions. The notion that INFPs and ESTJs have the same functions (albeit in reverse order) is inconsistent with both Jung and Myers (as further explained here
) and has no respectable body of evidence behind it.
There are decades of MBTI data pools establishing the validity of the dichotomies by demonstrating statistically significant (and sometimes very dramatic) correlations between the dichotomies (and various dichotomy combinations) and lots of personality manifestations (internal and behavioral both).
And here's the main point, for purposes of this thread: Virtually every time the correlations put people with one or more MBTI preferences at one end of the relevant spectrum, you know who's at the other end? The people with the opposite preference or preferences.
As one close-to-home but dramatic example, the spoiler has June 2013 membership stats for PerC.
Who's at the top? The INs. And they're 60% of the PerC population, even though they're only around 12% of the general population (according to the official MBTI folks).
And who's at the bottom? The ESs — just as you should expect (since they're the dichotomous opposites of the INs). And they're only 4% of the PerC population (vs. 34% of the general population).
And if you analyze those same stats from a functions perspective? Well, the INs are obviously a dramatically tidy foursome from a dichotomy-centric perspective, but they supposedly have three different dominant functions (Ni, Ti and Fi). Good luck coming up with any function-based
set of influences on personality-forum membership that seems to account for much of the variation in those PerC stats.
But so what, you might say. Maybe personality-forum membership just happens to be one of those things that's dichotomy-related but not particularly function-related.
To which I'd reply: OK, but... if INFPs and ESTJs are both "Fi/Te" types and "Si/Ne" types, and if being an Fi/Te type or Si/Ne type corresponds to some significant real-world stuff, then there should be at least some
data pools where Fi/Te vs. Fe/Ti (and/or Si/Ne vs. Se/Ni) turn out to be the main influential factors, and the ESTJs and INFPs are together on one side of the spectrum and the INFJs and ESTPs are together on the other side.
And the thing is ... are y'all listening? (*drum roll*) ... there really aren't any
data pools like that.
And that's because the Harold Grant function model (where INFP=Fi-Ne-Si-Te) is bogus — as is any
model that would lead you to predict that, if you take Person A and flip two
of their MBTI preferences, the result will be someone who's more like Person A
(in some significant MBTI-related respects) than if you'd only flipped one
of those two preferences.
And again, that lack of data pools wouldn't have surprised either Jung or Myers, because that weird double-flip expectation isn't really consistent with either of their type models.
So, in conclusion...
What type is most different from INFP?