We consider the notions of static and dynamic reasonableness of requests by an authority in a trust game experiment. The authority, modeled as the experimenter, systematically varies the experimental norm of what is expected from trustees to return to trustors, both in terms of the level of each request and in terms of the sequence of the requests. Static reasonableness matters in a self-biased way, in the sense that low requests justify returning less, but high requests tend to be ignored. (...) Dynamic reasonableness also matters, in the sense that, if requests keep increasing, trustees return less compared to the same requests presented in random or decreasing order. Requests never systematically increase trustworthiness but may decrease it. (shrink)

A person is said to be ‘trust responsive’ if she fulfils trust because she believes the truster trusts her. The experiment we report was designed to test for trust responsiveness and its robustness across payoff structures, and to discriminate it from other possible factors making for trustworthiness, including perceived kindness, perceived need and inequality aversion. We elicit the truster’s confidence that the trustee will fulfil, and the trustee’s belief about the truster’s confidence after the trustee receives evidence relevant to this. (...) We find evidence of strong trust responsiveness. We also find that perceptions of kindness and of need increase trust responsiveness, and that they do so only in conjunction with trust responsiveness. (shrink)