When I was evaluated it was during my intake for seeing the psychologist for my depression. It was just a conversation with the psychologist. You talk about stuff, and they ask questions. Sometimes they have specific things they want to know. For instance, they almost always want to know how your life up to now has been: how was your childhood, what have you done so far, do you go to school/university stuff like that. Then I had a psychological evaluation/test thingy after the intake was done, and that consisted of loads of questionnaires, and tasks that had to be completed within a certain timeframe. Hope it goes well! :D
I am not sure, honestly. The main reason I was referred to my psychologist was to treat my depression. The autism thing was something I mentioned on my own. I got an intake that was focused on everything because that way she had an understanding of me for the therapy that was to follow. Someone who was only referred for an evaluation might be able to help with that better. In any case, I don't think that an evaluation of just an hour would be enough, so you might want to prepare for the fact that there might be more meetings (and if there aren't any more, than that's just a bonus).
When I got referred for an evaluation, they organised both a meeting with me (to see what I was like now) and a meeting with my parents (to see what I was like as a kid). If you don't have the latter scheduled, presumably you'll have the same experience as Emma in getting asked a lot about your childhood. In my evaluation they did several tests on me as well as asking some questions. The tests were along the lines of: recognising emotions in eyes, recognising emotions and social occurrences in pictures, giving me certain toys and asking me to tell a story with them, and so on. They also asked me my thoughts on social phenomena, on whether I would like to have a relationship and what I felt like about people and relating to them, and so on. They'd also occasionally kind of test my social reactions, for example by saying that they really liked knitting, and noting down that I had not asked them to expand on why they liked knitting. (I was sitting there wondering why they were suddenly talking about knitting in a psych eval. -shrugs-)
