One of the natural questions that arises out of the study of personality types is:
Are certain types naturally compatible with each other?
Unfortunately, this question doesn't have a simple answer.
First, we see a large range of behaviour throughout the Levels of Development. Very high functioning (in the healthy Levels) people
can create and maintain strong relationships with anyone. On the other hand, in the
low-average or unhealthy Levels all the types exhibit very
objectionable behaviour that precludes healthy, fair relationships. In general,
the healthier one is in the Levels of Development, the healthier one's
relationships.
Second, sometimes two types seen to have a strong relationship, but it
may not have a healthy foundation. For example, consider a type 6-8
couple. Sixes want to have a stong authority figure to make them feel
more secure and confident. Eights want to be in control of those around
them. In their relationship, each person may appear to be giving to the
other what s/he wants. However, this arrangement reinforces and
perpetuates their personality's habits. The Six will become dependent
on the strength of the Eight and will have a hard time becoming more
independent. The Eight will resist any increased autonomy of the Six to
maintain the role of the Leader. Ultimately, the partners are not able
to grow out of their mutual roles. Of course, not all 6-8 couples will have this issue.