Boards of directors face the twin task of disciplining and screening executives. To perform these tasks directors do not have detailed information about executives' behaviour, and only infrequently have information about the success or failure of initiated strategies, reorganizations, mergers...

Evolutionary arguments and incentive theory point to the importance of variety and rotation of editorial board members to stimulate innovative research. Using a unique dataset covering more than 100 economics journals over the period 1990-2011, we document trends in the incidence of multiple...