Thank you so much aeh!

I did suspect that DS's previous FSIQ on the WPPSI of 129 was an underestimate because it was noted that he was bored and slightly distracted in a couple of the subtests.

We just did the WISC-V 9 months later and it came back at 145! Shockingly his processing speed index went up very significantly. We asked the psychologist to triple check that no mistakes were made and it's true.

How is this possible and should we treat the WISC as a better indicator than the WPPSI?