Participating in electronic markets and conducting business online inadvertedly involves the decision to trust other participants. In this paper we consider trust as a concept that self-interested agents populating an electronic marketplace can use to take decisions on who they are going to transact with. We are interested in looking at the effects that trust and its attributes as well as trust dispositions have on individual agents and the electronic market as a whole. A market scenario is presented which was used to build a simulation program and then run a series of experiments.