I've never said anything about a good session. I have said that I think I'm doing a lot better and T has agreed with me said "yes you are. you're doing very well". I think that was pretty sincere.

I general I think it depends on what it is you're asking. There's no rule that they aren't allowed to agree or disagree with you, but if they don't they may use language so you don't feel bad. It was my pdoc who I told I was doing much better. If he didn't see it that way, he might have said something more like, "Really? That's good. How so?"