I think you can read some of these conclusions in George Siemens's 2004 "Connectivism: A Learning Theory for the Digital Age" – http://www.elearnspace.org/Articles/connectivism.htm – and in his 2006 "Knowing Knowledge" – http://www.elearnspace.org/KnowingKnowledge_LowRes.pdf. Just saying :-).
A study shows that memory is poorer when participants expect that information they learn will be stored on a computer for later use.