An institution is a humanly devised structure of rules and norms that shape and constrain social behavior. This definition appears in the work of Alexander, Titus (2025) published in Frontiers in Political Science on the 1st of May 2025. The text notes that all definitions generally entail persistence and continuity. Laws, rules, social conventions, and norms are examples of these structures. Institutions embody knowledge about how to do things in society. They function as the social science equivalent of theories in natural sciences. Wolfgang Streeck and Kathleen Thelen describe institutions as building blocks of social order. They represent socially sanctioned expectations with respect to specific categories of actors. These expectations involve mutually related rights and obligations for those involved. Sociologists and anthropologists often use expansive definitions including informal institutions. Political scientists sometimes define them more formally where third parties enforce rules reliably. Jack Knight defines institutions as a set of rules structuring social interactions. He states that knowledge of these rules must be shared by community members. Douglass North argues they are constraints shaping interaction. His work emphasizes small historical features changing institutional nature.
Theoretical Frameworks
Economics uses game theory to study how institutions survive and evolve. Paul A. David wrote an article called Clio and the Economics of QWERTY in 1985 describing technological lock-in. This process occurs when a specific technology dominates the market despite inefficiency. W. Brian Arthur applied David's theories to institutions themselves. He noted that laws or policies can become locked into society regardless of efficiency. Randall Calvert defined institution as an equilibrium of behavior in an underlying game. He stated it must be rational for nearly every individual to adhere to behavioral prescriptions. Robert Keohane defined institutions as persistent connected sets of rules prescribing roles. Samuel P. Huntington described them as stable valued recurring patterns of behavior. Avner Greif and David Laitin defined institutions as nonphysical elements influencing regularities. They specified organizations influence beliefs and norms self-enforcing in transactions. John Meyer and Brian Rowan introduced institutional theory inspecting organizational shapes. Paul DiMaggio and Walter Powell proposed institutional isomorphism shortly after. Coercive processes occur where organizations adopt changes due to external pressures. Mimetic processes happen when groups resolve internal uncertainty by copying others. Normative pressure arises from professional environments like corporate changes.