Verona, I'm not sure what you mean by "roadblock", but the WMI and PSI are significantly lower than his VCI and PRI (which is quite common in ADHD
Sorry, I think I wrote that post too quickly! I really just meant that although his WMI and PSI are "relative weaknesses" for him, in the absolute sense his results are still higher than more than 80% of children his age. I didn't mean to imply that "relative weaknesses" couldn't cause difficulties and frustrations at school.
My DS has an even bigger spread (similar to Nik's DD). We recently had a full neuropsych. assessment done (WISC redone, WIAT, executive function, memory, attention) and will have more information to go forward with soon.