The purpose of this experiment was to test the impact of Determination, Ambition, Professionalism and Workrate on CA growth. In the early years of the experiment, most of the CA growth would be due to "natural progression" and training, as players would get precious little first-team football. What inspired me to do this experiment are the experiments of others, and the conflicting conclusions particularly about the Determination and Workrate attributes and their impact on player growth. I re