That was an interesting article. Thanks
I love my ebook reader and I carry some ebooks on My Samsung Galaxy as well for reading in those moments in my day where I am waiting or just have time out.
What I had noticed, and thought it was peculiar to me, is that I do not retain information as easily from my reader of PC screen. I find it far easier from an actual book and consequently not longer by text books for my reader. If I need references from the book I can scan the relevant pages, PDF it, or convert to reader format.
It appears that it is a common problem and at some point some one will do a study on it I hope. Meanwhile these two referrals.
http://www.ebookenvy.com/what-was-that-ebook-again/
http://www.useit.com/alertbox/ipad-kindle-reading.html