With ds4 we went with doing puzzles, seeing what you know, and a brain check up. The check up was like going to the doctor without the shots! They all seemed to satisfy him, and he seemed somewhat interested in doing it again, which is good because the WPPSI was for our info, in February he has to take a different one for the gifted programs! I also wanted to avoid the fail aspect which seems implicit in testing. I was more worried about the leaving him with the tester part, but he did okay with it. He was tougher than mom!!