This questions asks the child to count the number of stacked blocks. Most people will answer this question without hesitation, getting the officially correct answer. However, an alert person, or a dyslexic child whose geometric perception is very different from most people, may immediately wonder about the blocks that are hidden behind the visible blocks. The correct answer is that there is no way of knowing how many blocks there are because some of them may not be visible and the officially correct answer is wrong.