Here are the scaled subtest scores for my DS:

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VCI

Similarities 18
Vocabulary 16
Comprehension 12

PRI

Block design 16
Picture concepts 18
Matrix reasoning 16

WMI

Digit span 11
Letter-number sequencing 12

PSI

Coding 5
Symbol search 8
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A neighbor (who happens to be a teacher) also suggested that his relatively low coding score could be due to a vision problem - any other thoughts and/or suggestions?