Thanks for reposting this. I saw something I didn't catch on the first reading:
Quote
The harder it is to remember something, the harder it is to later forget. This effect, which researchers call �desirable difficulty,� is evident in daily life...The more mental sweat it takes to dig it out, the more securely it will be subsequently anchored.

This is another reason why we need to challenge our kids instead of being satisfied with material that doesn't give them "desirable difficulty." The part about testing struck a chord with me since I was a master of study for the test and then brain dump. This was good for my grades but not so good for long term retention. Any advice on applying this part of the research?