This is an excellent post from Inge Ignatia de Waard on the impact of mobile access on learner interactions in a MOOC as part of her progress towards a PhD. I’ve added her slide deck below for you as this has some excellent findings and figures.
I am also (still) reading Inge’s book ‘MOOC Yourself‘ and hope to have a report/review of it posted up soon, but the short bio can be read here.