This doesn't always work. A lot of the time kids know exactly why their actions are wrong, and yet they still do them anyway. The knowledge that something is wrong doesn't necessarily stop them from committing that wrong. They are a lot like adults that way. When you become a parent (or ever decide to work with children) you'll discover that you can talk until you're blue in the face to your five-year-old about why they shouldn't hit their sibling but unless you follow it up with some serious consequence then they are simply not going to take you seriously.
Yes, I agree.
Anyway - more on topic.
I remember looking at a common core math problem given as an example online. I did the problem how most people would do the problem, and I showed my work. I then redid the problem, writing down each equation I did in my head. For example, if I added 27 and 34, I would write 7 + 4 separately, then I would write 2 + 3 separately (and add the 1 from the prior equation), etc.. This way, I could look at all the equations going on inside the brain - whether most people are conscious of it or not.
I then used the common core method and did the same. Not only did you have to show more work, but the amount of extra equations the child had to do to solve the same problem was insane! I wish I still had the paper I did all this on so I could post exactly what I'm talking about.