Maybe, just maybe, these kids really ARE the smartest kids in the class, and maybe, just maybe, they really DO understand the value of making a considered choice. For example, time and again it is shown that more academically skilled students, high iq kids, etc....take more time reading a question than answering a question. Maybe they've read the question long enough to come up with the right answer. I could be wrong though. I did my undergrad at a state U.