Thanks, aeh!
It sounds like the nonverbal section is not really comparable to the VSI on WISC. Below is a quote from his ability profile:
"More than other students, these students profit from easy-to-read pictures, drawings, and graphic representations that compensate for their less developed spatial reasoning abilities. However, complex diagrams and three-dimensional drawings easily overwhelm them. When working with such students, the key is to provide spatial modes of representing problems. This will help the students create mental models of concepts that are more easily transferred and retained than are sequences of symbols or consecutively executed operations."
Do these suggestions really apply to DS with his spatial abilities?