Well, if it's anything like the WPPSI, it could be that HG+ kids are misinterpreting the questions. My DS answered "I don't know" to a question about what a certain food item is made from. The tester didn't encourage him to explain, but after the test I asked him about it. He said that she hadn't specified which variety of this item she was asking about and anyway he couldn't remember all the ingredients of the different kinds. I'm sure the answer they were looking for was a single main ingredient.
