I chickened out of asking the psychologist in college. He probably preferred Dr. because I don't even remember a first name. My previous T never really told me her preference. So, I pretty much never really used her name. I find that I don't tend to use a name when speaking with only one other person. My new T told me to call her by her first name. I think of the previous T and new T by first name. However, I really haven't ever used it. I'd probably feel a little funny using it. Well, I did write her name on a drawing that I drew to share with her and it was her first name. So, I guess I have used her first name once.