does this sound right to you guys:
the demonstrative function isn't a choice, you can't produce it "on demand" when subconsciously you don't sense a need for it. it's purely a reference for your creative function. when the creative function is doing OK, connecting the individual to the world, the demonstrative becomes relatively inert. however when there is a problem connecting with others via your creative function, the demonstrative involuntarily "leaks" information to the surrounding, and collects feedback of the same kind from others. and that gives the creative function more to go on.
in conjunction with this involuntary expression, the demonstrative is also largely non verbal. the only times it becomes verbal is when the POLR function is threatened. verbalization of the demonstrative is a response to psychic stress, it relieves pressure on the vulnerable POLR function. the more pressure there is on the POLR, the more exhibitionist becomes the demonstrative. on the contrary, a lack of expression of one's demonstrative is a good sign of psychic security. even more secure is when a person takes others' lead in their demonstrative, subordinating themselves.