High trusters differ from low trusters mainly in risk-taking for cooperation

Evidence

One might also say I have a disposition to trust, as though to say I have a disposition to know certain kinds of things and, perhaps, not others. That is a more complex claim that might make psychological sense, but it is not evidently a major claim in the trust literature. What is claimed seems more nearly to be that some people, commonly labeled (misleadingly) high trusters, are more likely to take risks of cooperating than are certain other people, commonly labeled low trusters. — Russell Hardin, Trust and Trustworthiness, 209