Subtypes are an attempt to explain differences between people of the same type (example;
gulenko's theory.
What I'm saying is that it could explain how some people in a "perceiving" type could be more judging and less perceiving than the stereotypical person in their type.
Let's take an SLI for example. And let's also make two assumptions; judging functions are left-hemisphered and perceiving functions are right, and irrational types are inheritally more right-brained, with rational types more left-brained. This would mean that the typical SLI would be right-brain dominant. It would also mean that he could spend most of his time in
![Introverted Sensing](images/smilies/Si.gif)
mode. Good! Then guess what happens when he switches over to left brained mode, hey, he can use
![Extroverted Logic](images/smilies/Te.gif)
! Brillant. But that is only ideal. Let's take a "less ideal" SLI example. He is also right-brained dominant. BUT, for some reason or another, both judging and perceiving functions developed in his right brain. What is this guy now? Sure we can say he spends a lot of time in
![Introverted Sensing](images/smilies/Si.gif)
mode, but what about those logical processes that are in the right brain now? Maybe it's
![Introverted Logic](images/smilies/Ti.gif)
? Maybe this perticular SLI relies much more on
![Introverted Logic](images/smilies/Ti.gif)
than the average or "ideal" SLI. Thus, we could call this a subtype.