Institutional theory
According to Kraft's Public Policy (2007): Institutional Theory is "Policy-making that emphasizes the formal and legal aspects of government structures."
Institutional theory is "A widely accepted theoretical posture that emphasizes rational myths, isomorphism, and legitimacy." Institutional theory focuses on the deeper and more resilient aspects of social structure. It considers the processes by which structures, including schemes, rules, norms, and routines, become established as authoritative guidelines for social behavior (Scott, 2004). Different components of institutional theory explain how these elements are created, diffused, adopted, and adapted over space and time; and how they fall into decline and disuse.