DS, age 10, 5th grade is in a GT program and has been having a bad year. Teacher complains that he talks constantly, fidgets, doesn't pay attention, and that the quality of his writing is inconsistent. ADHD is certainly a possibility. But looking at his WISC-IV scores, I'm concerned that there might be other issues that need to be addressed (or that create behavioral issues that look like ADHD but aren't). Specifically, he has high verbal scores and low average scores on tests involving visual perception:

Verbal Subtests
Similarities 14 91st percentile
Vocabulary 16 98th percentile
Comprehension 15 95th percentile

Perceptual Reasoning Subtests
Block Design 12 75th percentile
Picture Concepts 8 25th percentile
Matrix Reasoning 10 50th percentile

Processing Speed Subtests
Symbol Search 8 25th percentile
Coding 9 39th percentile

VIQ is 130, but processing speed is 91.

The school psych threw out the FIQ as invalid because of subtest scatter (good, or DS wouldn't have qualified for the GT program), but doesn't see the processing speed as a problem (she didn't even address the visual processing question).

Do these scores suggest visual processing issues we should address?