In my case I had to take two questionnaires (one was 100+ questions for general mental disorder evaluation), a subset of an IQ test, and a computer test. The computer test was interesting... it was along the lines of left click when you see the number 2, right click when you hear a sound. No other distractions trying to trick you into clicking, but it is a 15 minute test. Excruciatingly boring, but even trying as hard as I could, the psychiatrist wondered if I had cheated/fudged the test because my results were so far out of whack compared to the IQ test.