what do the low scores for WMI and PSI mean for us?
They might not mean anything, or they might mean there is something that will show up as a challenge for your ds in some way at some point. If you haven't had any concerns at this point in time, I wouldn't give any thought to it - they are both good scores and many of the kids here have lower PSI and WM scores than their VIQ/PRI. OTOH, if your ds starts having trouble with any kind of school work (timed activities, writing, etc) I'd consider investigating the reason behind the difference in scores, because even though it's most likely not, it *can* be an indication of a learning disability.
Best wishes,
polarbear
