I have referred to just 7 articles behind paywalls in my blog posts over the past week, and only one of these has a price over $15.00:
|2010.06.22||"An early Australopithecus afarensis postcranium from Woranso-Mille, Ethiopia," Proceedings of the National Academy of Sciences||PNAS||$10.00|
|"The Prickly Side of Oxytocin," Science||AAAS||$15.00|
|"The Neuropeptide Oxytocin Regulates Parochial Altruism in Intergroup Conflict," Science||AAAS||$15.00|
|"Different amygdala subregions mediate valence-related and attentional effects of oxytocins in humans," Proceedings of the National Academy of Sciences||PNAS||$10.00|
|2010.06.24||"A bag of notes approach to writer identification in old handwritten musical scores," Proceedings of the 8th IAPR International Workshop on Document Analysis Systems||ACM||$15.00|
|"The minor third communicates sadness in speech, mirroring its use in music," Emotion||APA PsycNET||$11.95|
|2010.06.27||"An fMRI study of self-reflection about body image: Sex differences," Personality and Individual Differences||ScienceDirect||$31.50|
The mean price for articles this week is
The cumulative cost of the 37 "Closed Access" articles referred to in this blog since it began is $917.38.
Using R's "summary()" function on this data, we get:
10.00 15.00 29.95 24.79 31.50 83.68
I am happy to report that there have been a number of fine research articles this week that were freely available.