Because the models only disagree about the introverted types. All the extraverted types are described similarly, and they are attributed the same functions (even though the functions are defined slightly differently) in the ego block. So, there is no problem with the extraverted types. They are clearly talking about the same groups of people there.Originally Posted by Ezra
That the extraverted types are identical becomes even more obvious if you look at how David Keirsey describes the 16 types in the light of his four temperament groups (SP Artisans, SJ Guardians, NF Idealists, and NT Rationals). The SLEs are clearly Artisans in Keirsey's sense, LSEs are clearly Guardians, and LIEs are clearly Rationals. And that is no coincident.