Working toward such a definition, reputation can be viewed as a socially transmitted meta-belief (i.e., belief about belief) that is a property of an agent, that results from the attitudes other actors have about some socially desirable behaviour, be it cooperation, reciprocity, or norm-compliance. Reputation plays a crucial role in the evolution of these behaviours: reputation transmission allows socially desirable behaviour to spread. Rather than concentrating on the property only, the cognitive model of reputation accounts not only for reputation-formation but also for the propagation of reputation.