I just went through this a week ago. I found the shrink scarey and really disinterested in what he was doing. Some people have lots of tests done.
He will have you probably count backwards from 100 by sevens. If you can do this rapidly...then don't on the exam. He will test your ability to concentrate and rememeber things like numbers in a sequence. Ask if you are depressed. Ask about meds and how they make you feel. My shrink asked if I had been abused as a child......
Mine was in Michigan and only took about 1/2 hr. Just sit there and answer the questions politely. Make sure when you talk about your problems...you give the worst case scenario.