The Strategic Advisory Board for Intellectual Property Policy has released The Economics of Copyright and Digitisation: A Report on the Literature and the Need for Further Research.
Here's an excerpt:
The Strategic Advisory Board for Intellectual Property Policy (SABIP) has commissioned this report in order to inform its future research agenda. One task is to undertake a critical overview of the theoretical and empirical economic literature on copyright and unauthorised copying. On the basis of this literature, two further aims of this report are to: (1) identify the salient issues for copyright policy in the context of digitisation; and (2) formulate specific research questions that should be addressed in order to inform copyright policy.