Why do some international organizations (IO) accrete delegated authority over time while in others delegation is static or declines? We hypothesize that the dynamics of delegation are shaped by an IO's founding contract. IOs rooted in an open-ended contract have the capacity to discover...

This paper takes up the familiar question of how one can explain support for European integration. One line of explanation builds on trade theory to theorize a calculus of economic costs and benefits. A second explanation draws on cognitive and social psychology to assess how individuals use...