Managers don't seem so big on self-improvement

Let's start by taking a look at this graph; I got it from here:

This is from Joseph Folkman, who's a pretty big deal in the whole "leadership development" space. It's based on 360 assessments with 50,000 leaders; they were asked to rank 16 different business competencies, then those competencies were grouped by level.

Start by looking at "manager," which …