The encapsulated-interest account of trust holds that the trusted encapsulates the interest of the truster and therefore has incentive to be trustworthy in fulfilling the truster's trust. The encapsulation happens through causal interactions in the iterated one-way trust game, iterated exchange (or prisoner's dilemma), and thick relationships. None of these, however, is itself definitive of the trust relation. They are all merely ways to give the trusted incentive to take the interests of the truster into account.

Russell Hardin, Trust and Trustworthiness, loc. 151