From what I understand, the reason to set 1 week as the time between two therapy sessions is for the clients to do homework, which can be: take notes on recursive thoughts and emotions, remember important information that lead to the belief, rewire the brain to build a new habit. (In case of threaten of suicide, it is allowed to have more than one session in one week.)
But from my experience, it takes up to 3 days or less to fully remember the necessary information and organize it in a clear, succinct manner. At then, the person basically satisfies with the answer, and only need to wait for feedback. We can say that the rest 4 days are for them to continue challenging their own view, but it seems that any new information that come up are just minor points, and don't really change the original outline of the answer.
Question: How long does it take to assimilate information, recall memory, verbalize tacit knowledge and organize them as a conceptual framework to justify the belief? Is the number 3 a typical number for most people, or is it just me?
I would exclude other non-cognitive factors, like having a day-job. The belief doesn't need to be true either.
A consequence is that the 1 week waiting between sessions could be different in cognitive therapy, since I think in a logical discussion, any emotions that are evoked will quickly be overcome, as long as the client concentrate on the logic.
