Why don the Interaction Styles match the Myers-Briggs letters in some parallel fashion?
The relationships between the two models were revealed by a matching of patterns derived from the different models independently. Each lens or model allows looking at the whole in different ways yet ignores the differences that might relate to other models. You can see the underlying logic when you remember that the MBTI code does not stand for a collection of traits that go with the four separate indices. Jung’s original work was based on eight holistic types, each characterized by a difference mental process (see Appendix A). Fundamental to a holistic view is the understanding that trying to understand an organic whole by looking at the “parts” is an artificial distinction and the whole can never be fully understood through the parts.