Measuring Return on Investment in learning and development spend is a red herring that has been occupying far too much time for HR and too much attention for Executives.
Firstly, if the question is been asked, value is not been perceived, and no amount of data visualiztion or spreadsheet gymnastics will change that.
Secondly, to conduct a robust measurement study you would need a control group, a test group and control over all other variables. This is difficult under laboratory conditions, and next to impossible in the real-world.
So instead of wasting time, money and effort chasing the "holy grail", review the infographic below and see how you can change the conversation from measuring to managing and get more out of your learning and development budget.

