How does the concept of "projection" (psychology) apply to astrology?

[Been There]

Projection is most likely to occur in the presence of two types of factors:

1. In a person's birthchart, if they have a Yod configuration (not a "boomerang yod", just a conventional yod), Huber called this the "projection triangle" and indicated that the person is likely to blame others (project onto others).

2. In a synastry comparison, if one person has a personal planet in square or opposition aspect to an outer planet ... and they get into a relationship with someone who has a personal planet conjunct the other person's personal planet ... then the energy of the first person's natal sq/opp will be projected onto the other person. In others words, rather than acknowledge the dynamics of their own sq/opp aspect, they project it onto the other person and see them as being that way instead. They fight it out with their partner instead of "owning" their own dynamics and handling it on an internal level.