I keep loosing this. I thought I had made reference to it in other articles, but evidently not. I don't know why or who dot the Dreyfus model wrong in terms of the names of the stages, but whatever the reason, here is the real study. And despite all the sites that want to sell you the article, they are archives of public domain. This study was government sponsored, and if you read the notes, this is public domain.
If you like to learn, or ever wanted to be really great at something, are a fan of the scientific method, or a militant atheist, you will LOVE this read. This is likely the best short read ever for me.