Giannini’s model differs importantly from Myers’ in that it does not restrict us to just one predominant function pair associated with one’s preferred perceiving and judging processes. His model provides a greater degree of flexibility in the developmental expression of type-related behaviors as well as enhanced adaptive power for engaging and responding to our various environments.
The type code had another unintended effect, which was to elevate the E-I and the J-P dichotomies to the same level as the functions. I had always thought of myself as an Introvert and nothing else. I had also been taught that I was a Judging type and I had been told that “J’s decide quickly,” but that was not true for me. So there were holes in my preference framework where my experience did not fit what I was taught.