The aim of this paper is to provide an analysis of institutional actions from the standpoint of cognitive science. The notion of constitutive rules have been proposed to describe the conceptual nature of institutions. In this paper it is extended to cover specific processes of \u27recognition\u27 that provide the agents with additional artificial powers. The power of doing an institutional action is considered as a special kind of artificial power. It is argued that institutional actions achieve their effects thanks to a cognitive and behavioral mediation of a collective of agents. Individual actions are seen and treated as (count as) institutional actions by the involved participants even if, in fact, institutional actions are collective a...