KJV?

Has self-directed CBT actually been studied?

Yes, most of the books start off listing the studies and the results. I seem to remember the best seller one, Feeling Good, actually goes into the history and discovery, including the actual tests and results incrementally, although I don't have my copy immediately available. When I say scientifically proven, I mean it. If it doesn't work, the researchers would honestly like to learn about your situation and why it didn't work.

You didn't answer the question. Were these studies done on people who were self directed? "here's the book, have fun, we'll follow up in a year."

As far as I understand most people receiving CBT who have been studied have received it in a professional setting with weekly meetings.

Yes, I did. CBT is done self directed. In a professional setting with somebody is possible, but it is more like giving you homework. I have never been to a group or "professional" In the studies (I believe to be in Feeling Good but it could have been in a dozen other books I read) they split up groups an gave CBT training to one and the other one was a control. However, getting to that study there were a series of other studies of ideas (which had to be changed because of the results) that lead up to CBT. I seem to remember the author talking about going to conferences and how they changed their ideas as they broke down what the models.

Then yes, there was actually a study of the book Feeling Good (kind of meta), and told to read it with a checkup every 6 weeks just like you guessed it in the quote. There are other CBT books that are smaller and to the point, more tactical approach to learning the methods (I think one is called Learning CBT) of Feeling Good. The second half of Feeling Good goes into drugs, which at the time was written no long term studies had been done or possible. From my personal research, these drugs do not work and cause more damage then good. I have found that through suffering and depression, and then working my way out of it, I believe I am better off then just taking a drug. I feel they are supressing some kind of natural force that is needed to build character, but for some people they are needed as a "backstop" to get out of a hole. On another note, depression has grown several folds since the introduction of antidepressants. I do not even consider that there is actually a thing as a drug that can do what they claim, but that's my personal belief.

King James Version.