The VMI is a fine motor task, probably given to investigate whether the low PSI was more a function of motor coordination or speed of information processing.The results support personal weaknesses in fine motor skills, at the low end of Average, and are probably sufficient to explain the PSI score (though they don't rule out other motor-free speed issues).
The achievement test sounds like it was not the WIAT-III, since no paper was allowed. Perhaps it was the WJIV. The WJ does have a high ceiling, which is good for this case.
