In ways large and small, personality types that rely on Perspective One are principled reformers. They notice where people and institutions are not living up to standard and try to rectify the situation. Moreover, they notice where family or societal norms lack justification and try to change them.
It appears that the acquisition of Perspective One begins with the young person’s decision to somehow embrace a principle, quality, or worldview that is not well-represented in their family. In the first place, they experience firsthand the family’s deficiency, for example, a lack of education. Then, probably without going through any formal or even conscious deliberation, they begin to identify with a principle that, if realized, would fill the lack. So one child determines to become the first person in the family to finish college. Another leaves the city and buys a farm.
Since Perspective One is rooted in a sort of judgment on the family’s lack, it becomes a way of distinguishing yourself from your family, a way of individuating.
At the same time, Perspective One involves heeding a call emanating from the world beyond the family. Maturing means being pulled away from parents by the larger reality and interacting with it in a meaningful way.
Again, a major premise of Structural Enneagram is that all normally functioning people use all six perspectives. We all use Perspective One. We are all principled. Yet some personalities rely more heavily on Perspective One than do others.