Very nice!
So I should note that all of the same caveats about young examinees are still applicable on this WISC (even though the scores are a bit higher): he's still very young, with the possibility of score instability because of natural variations in testability that affect how applicable the norms are to any individual student. In this case, that translates to the possibility of some regression to the mean in the future. But generally, it does appear that he was more engaged for this administration, and certainly one would hope for increased testability with increasing maturity!
The increase in the PSI especially may reflect differences in attention and even in fine-motor development between the two dates. It's also a different kind of task from a fine-motor standpoint. Typically, I would expect young children to do better on the WPPSi task (stamps) than the WISC tasks (pencil marks), but then again, that's going to be the case across the board (with most kids), so if he has good pencil skills, the WISC comparing him to a range of just-six-year-olds who include kiddos with limited pencil skill advantages him.
He did have a fair amount of intra-Index diversity last time too, so if he simply was more consistently close to the higher of each of his previous scores in each index, the global scores would be expected to go up.
One way or the other, you now have DYS qualifying scores for him!
