Quote Originally Posted by Jonathan View Post
Seen that way, MBTT reflects simply a hypothesis that an emphasis on static IM elements would tend to cause one to be less inclined towards schedules and externally-directed order, whereas dynamic rational IM elements would cause one to be more inclined towards schedules and externally-directed order.
This is exactly how I would like to see it treated. There are two hypotheses here. One has static/dynamic tendencies as the direct cause of J/P behavior, the other has rational/irrational as the direct cause of J/P behavior. However there's a variety of traditional J/P behaviors, some of which might apply to static/dynamic whereas others indicate rational/irrational.

What would be helpful is a list of behaviors that do indicate static/dynamic, but not rational/irrational. This would also be useful in telling introverts apart from extroverts in borderline cases, such as you mentioned earlier. It would also be an empirical vindication of the claims regarding the structural aspects of type. However, it would only be useful to the degree that the behaviors were exclusive enough to eliminate confirmation bias. Something that I have a hard time picturing doing completely. You'd almost have to put the subject in stressful situations and see how they react.