Some interesting questions arise here …
… firstly – does it matter?
On the assumption that it does; why?
I certainly don’t see any problems with students discussing what they’re learning with each other; whether it’s via Facebook, MSN, over a cuppa, or whatever.
The second is something that I’d like to know more about; so, when students say they’re using Wikipedia, but citing from the items it references; are they doing something that I see as fine – using Wikipedia as a starting point, to then go and *read* the refs; or are they using Wikipedia & claiming they’ve read others?
To me, a lot of this returns to the question of assessment design; is the assessment ultimately to test whether or not facts are known, or is it how facts are used? If truly the latter; then, finding (and *verifying*) facts is only a starting point. And why not find them wherever is easy.
Oh, and have a look at ref. 1; in a bit more depth & some useful Presentations (inc. lots of refs)