Now that the subscale ball is rolling, we can go to the next step, which is like an extension of Step II ("Step 2A", perhaps?

): the
Type Differentiation Indicator, which adds the
Comfort-Discomfort scale that supposedly matches the missing FFM category of Neuroticism. Continuing from Step II, it also is broken down into subscales:
COMFORT.............DISCOMFORT
optimistic..........guarded
compliant...........defiant
carefree............worried
decisive............ambivalent
intrepid............inhibited
leader..............follower
proactive...........distractible