We tested DD with WWPSI for CTY at 6 and then she did the WISC for gifted program at 8. It was about the same and about the same as tests done earlier. She hasn't had much variance since preschool. All tests were done for school or program admittance. I was curious to see what happens at 21, after final brain development. She is really pushing herself now at school and I notice her strategic abilities are getting stronger, her risk taking, going around obstacles. But that would be just for curiousity. And she is only 15 now. Based on where she was at 8, going through difficult life changing events, I am thinking it would go up through this period.