I use a 1 to 5 scale and every time the respondent turns it into a 1 to 10. I always get 3.5 or 4.5. I dont get it, what is that 1 to 5 is not fine enough?
I don't know if there are inventories for depression, but every time someone tells me I'm a bit talkative I take the Young Mania Ratings Scale. It's a wonderful, wonderful tool: