Continuously Improving Your Lean-Agile Coaching, Luca Minudel with Carlo Beschi article on InfoQ
Self-assessment radars and sponsor-sponsored relationships for continuous development are practices extensively used in ThoughtWorks, where I’ve learned and experimented with them.
Skills in the radars are based on the agile-coach competency framework in “Developing Great Agile Coaches” by Michael K. Spayd and Lyssa Adkins.
Spayd and Adkins cover the arc of mentoring conversation and powerful questions in their Coaching Agile Teams workshop.
The lists of personal traits in the radars come from this blog post by Esther Derby.