My son's IQ test at 4 was in a closed room. The psychologist was with him for 45 minutes and there was an assistant present (either for taking notes or because it is their protocol to leave a small child alone with 2 adults than with one for the child's safety, I don't know). We told him that he was going to do some fun puzzles and answer quizzes (both of which he loves and he treated it like a playdate). The psychologist was also very nice, but she came out and told us that DS talked a lot about his favorite superheroes during the test.