Maybe that someone is you.

Constructive developmental theory appears to be fairly reproducible in that inter-rater reliability is extremely high if that's what you mean.

Constructive development level is known to correlate with leadership skill. This is kind of cherry-picking, though, because no one other than management consultants has seemed to even try to apply constructive developmental theory in the real world (or if they have it failed and they didn't tell anyone).

The same management consultants have made a business of helping people reaching level 4, because they are dramatically more effective leaders than folks who primarily think at level 3 or, worse yet, level 2. Level 2 thinking is basically what gets you the typical Pointed Haired Boss of Dilbert fame. Level 3 gets you "leaders" who people like but who actually tend to have a hard time leading because they have difficulty making decisions without over-consulting others.