In the study, the relevance of several optimum-currency-area (OCA) criteria is formally worked out in a welfare approach. The optimum monetary-policy rules of the supranational central bank are derived within the Barro-Gordon framework, and consideration is given to how the welfare of the member...

After the collapse of Lehman Brothers, a rapid and far-reaching shrinkage of international banks' assets with a focus on foreign claims took place. For the largest 67 German banking groups, we find that both their characteristics and behavior in the pre-crisis episode had repercussions for the...