We are getting ready to undergo another round of testing for my DS8. I was reviewing his WISC IV results from 2.5 years ago and his VCI stood out as needing further explanation from the knowledgable folks here.

VCI
Similarities 13
Vocabulary 15
Comprehension 11
Word Reasoning 19

To my layman eyes that looks like a significant intra index spread. Why comprehension so low? Why Word Reasoning so high? The tester didn't explain anything. IRL we see a highly verbal kid and a voracious reader who struggles with EF and has ADHD like qualities. WIAT III achievement reading scores were all 140+.

Because I didn't have confidence in the tester (long story) he took the DAS II 8 months later. His Verbal T scores seem to be the opposite?

DAS II

Verbal Comprehension 78
Naming Vocabulary 56

Any insights would be appreciated!

thank you.