I think this is a very interesting study mostly because it is something we deal with at the place where I work.  We have students like this all the time and often they are reinforced by the parents that raise them.  It is a hard thing to face, but the best choice we have in dealing with it is to stick to our guns as teachers.  It means we ask students why they answered as they did, teach them to think critically and converse about their work instead of just assigning it, going over answers and moving on.  The more discussion there is about the learning that occurs, starting in kindergarten, the less this becomes a factor because they know we’re not giving answers, we’re building pathways of learning.