This paper explores methods to study trust. In a variety of settings, answers to survey questions and choices in a trust game are obtained from student sample pools. Some subjects are approached by mail and execute their task at home whereas others participate in classroom experiments. No differences between the results obtained by these methods are observed. Furthermore, one additional group plays the trust game with purely hypothetical payments, and another receives random lottery payments. This changes trust behavior dramatically, whereas trustworthiness is unaffected. Subjects without any financial incentives exhibit less trust and their trust choices are significantly correlated with survey trust answers. There is no such correlation for the corresponding choices with real payments. © 2007 Elsevier B.V. All rights reserved.