Although members of a small community might never develop a sense of reciprocal trust such as that in the encapsulated-interest account, they could all or almost all develop trustworthy behavior. These members would then be somewhat like the infant whose parents are supportive and whose experiences are benign, so that the child develops optimistic expectations of the trustworthiness of people and is therefore relatively ready to take the risks associated with cooperating with people. When a member of such a community enters a broader society without the protection of the sanctions of the communal norm of cooperativeness, this optimism should lead to attempts to cooperate with others and therefore mastery of assessing trustworthiness.

Russell Hardin, Trust and Trustworthiness, loc. 825