From the abstract, it looks like an interesting paper to read
but unfortunately, it's stuck behind a paywall and my searches
have been unable to find a freely available copy.
The price of information http://www.economist.com/node/21545974
http://psychology.ucdavis.edu/Labs/Ghetti/PWT/index.cfm?Sect...
http://www.ncbi.nlm.nih.gov/pubmed/24910347
NIH-funded researchers are required to deposit pre-proof manuscripts (text and images without final journal formatting) in the PubMed repository within 12 months. Often, this is facilitated by journals themselves as a checkbox in the submission system. (They provide this service in large part so that they can wait as long as possible to submit to PubMed)
http://www.theguardian.com/science/blog/2013/jan/17/open-acc...