As to the OP's topic... this sort of reminds me of a conversation I had with DS's school SLP. She met with me one day to review his progress and referred to a reading comprehension exercise he had done. She said "Some of his answers are quite odd." You could clearly see a change... from compliance at the beginning to gradual boredom resulting in more and more out of the box answers that were "technically" correct but very divergent from what would be expected. I wish I could remember an example. I feigned concern for the SLP's benefit but secretly I was really proud...
