Re: WPPSI, there was a 1 SD difference b/t my dd12 on WPPSI at 6 and WISC at 10, and WISC was more accurate. (this was likely due to perfectionism on WPPSI IMO). She presents very differently than how you describe your daughter. My dd6, though sounds a lot like your dd, and of course I love her but it can be exasperating. We did WPPSI when she was 4 b/c I wanted to try to understand her, and I don't believe it was accurate, due to immaturity (duh!) and lack of full cooperation. We are saving up for testing with WISC to try to figure this kid out. So, no help, but I can understand why you might want to test further. Further testing with my oldest gave us the confidence to skip her which was the right choice and now she is thriving. I totally get a kid who is a mystery. Good luck sorting it out!
