An oft-cited statistic is that 70% of development actions should come from experience, 20% from relationships/feedback and 10% from education/training. The source is often listed as CCL and Lombardo and Eichinger. It has been cited so often that is has become gospel. But recently, there has been a spate of articles raising an issue of whether this statistic may be receiving more weight than is justified by the research behind it.

Here’s the research, according to TDMagazine.  It comes from 191 executives looking back on their careers and listing what things made the difference in how they now manage.  The lessons learned followed this 70:20:10 breakdown. (more…)