The psychs who gave DD the WJ and the WISC didn't see ADHD either (2 different psychs). I'm sure it would have been more obvious if she had gone into testing completely unmedicated, but even the "professionals" do not always see it, esp. if it's just an hour or two in an unnatural situation where a kid is with a strange adult and trying really hard to do what's asked of them. My DD CAN focus, she just has to put an inordinate amount of effort into it. It wasn't obvious to her teachers in kindergarten and first grade, either, but I think she is fairly severe, and it is the combined type. My DS just finished first grade and his teacher had a Master's in Special Ed. Four months went by and she didn't seem to notice anything amiss with DS, then finally after watching him for something else, she noticed that he's a space cadet in class and has focus issues. We did a trial of meds just for a few days and she noticed a dramatic difference, so in the fall we will have to look at the issue again.