On defining institutions: rulesversusequilibria

In their stimulating paper, Hindriks and Guala (2014) bridge the prominent alternative conceptions of institutions-as-rules and institutions-as-equilibria, by proposing a ‘rules in equilibrium’ interpretation. This comment argues that the task of defining institutions as a class of phenomena is different from the tasks of understanding or analysing them. Definitions are classification devices and are typically ill-based on behavioural outcomes such as equilibria. Accepting the useful insights of the Hindriks and Guala (2014) article, attention to the matter of definition reinstates a rules-based approach, notwithstanding the importance of understanding and analysing equilibria. The comment establishes a broad definition of institutions as systems of rules, which includes organizations. Finally this comment raised some of the problems involved in understanding the nature of institutional rules.