There are numerous country studies of EPI ‘in action’. Implicitly or explicitly, they view EPI as a process that is anchored in a political system. In this view, EPI needs to be decided by political majorities; must be organized and managed; and finally should be maintained (either through enforcement or through persuasion). The structure of the prevailing political system (institutions), the political context (politics) and the social, legal and administrative tradition of a polity (cognitive predisposition) ‘in concert’ may help to recognize the relevant dynamics for (effective) EPI. The remainder of this section looks at each one in turn.