Many thanks to Jim Getz for drawing attention to Project Information Literacy, and in particular a study they did on the way students use online sources of information. The report, available online as a pdf, is entitledย โTruth Be Told: How College Students Evaluate and Use Information in the Digital Age.โ
The site includes a number of videos.
http://www.youtube.com/watch?v=sdBFjh3xxGM?fs=1