When I act in a way that seems to fit my interests, I might nevertheless assert that I am acting out of moral commitment, character, or something else. Moreover, I may be extremely good at acting in my interests and still be genuinely committed to the claim that my motivation is not that of self-interest. Given that more than one of these motivations—interests, morality, norms, identity—might govern my behavior, trustworthiness, and therefore trust, can be overdetermined.

DEFINE: Introduces 'overdetermination' as a concept applying to trust: more than one motivation (interests, morality, norms, identity) can jointly ground trust.

Russell Hardin, Trust and Trustworthiness, loc. 411