The second MOOC European Stakeholders Summit recently published a 293-page collection of articles on MOOC research and pedagogy. Paper topics include scaffolding self-learning in MOOCs, understanding persistence in MOOCs, and encouraging forum participation with collectivist, individualist, and neutral motivational framings.
http://www.emoocs2014.eu/sites/default/files/Proceedings-Moocs-Summit-2014.pdf