This is something I have been curious about...this and whether we have different types that we implement - e.g. how many adopt an 'outside voice' - face to the world that is totally different than their real type?
Under stress you start using your ill-practiced inferior and tertiary functions because your dominant and auxiliary aren't cut it for the job.
That's the theory, but I've found no support of this from looking at people's behaviour.
Instead it seems to me like the "6th" function what's suppose to be the (witch) shadow auxiliary, seems to misbehave under stress.
ISTJ => Si Te Fi Ne Se Ti Fe Ni
6th would be Ti.
Tendency to be stubborn, rigid in defining the system. Paralysis in analysis. Hesitancy in moving forward. (Si Ti)
Truth or BS in your opinion?
Hmm... what you say is interesting. When I'm under stress I find I usually bring out my values, what's ultimately important to me, and what motivates me, thus my Fi. I think my Fi is very strong under stress. I usually push through and work harder to overcome the stress. I can't think of any other process that's as high as my Fi under stress.
If you are an ESTP, you are....your opposite would be...
Se <> Si
Ti <> Te
Fe <> Fi
Ni <> Ne ...The ISTJ
For the ENFP,
Ne <> Ni
Fi <> Fe
Te <> Ti
Si <> Se....The INFJ. I have experienced this several times myself. My shadow figure becoming dominant, that is. It happens when in horrible stress, maybe if your house burns down or you lose a loved one. This is the ONLY time I have EVER behaved like a J, and my Ni was like electricity. So for me, the theory stood strong.
An inscription above the gate to Hell:
"Eternal Love also created me"
That means that when I'm under stress I act like an ESTJ? Probably. It would be that I was grasping at straws and desperate to simulate the horrific external control of my SJ grandfather which symbolized security most to me in childhood. People who know me well could probably actually verify that I get "weird" like that in especially bad situations.
"Sentiment without action is the ruin of the soul." - Edward Abbey
Under stress, we'd probably reach into our tertiary, and maybe our inferior, when our normal course of action doesn't work. At least, I know I get all Te when I get stressed and frustrated; writing lists, organizing my time, and cutting through the crap when I deal with other people.
Reversing all four letters reverses your function order. So I guess that's plausible for an "opposite."