Institutions are social structures that have attained a high degree of resilience. [They] are composed of cultural-cognitive, normative, and regulative elements that, together with associated activities and resources, provide stability and meaning to social life. Institutions are transmitted by various types of carriers, including symbolic systems, relational systems, routines, and artifacts. Institutions operate at different levels of jurisdiction, from the world system to localized interpersonal relationships. Institutions by definition connote stability but are subject to change processes, both incremental and discontinuous. Moving further away from realist models, we come to some core ideas of modern sociological institutionalism (see DiMaggio & Powell, 1983; Powell & DiMaggio, 1991; Scott, 2001; Jepperson, 2002; Hasse & Kruecken, 2005). Here, actors are substantially empowered and controlled by institutional contexts, and these contexts go far beyond a few norms or network structures. Further, these contexts are by no means simply constructions built up by the contemporary actors themselves, but rather are likely to have prior and exogenous historical origins.