Proceedings of the Annual Meeting of the Cognitive Science Society

Our beliefs change with learning, and much of what we learncomes from the testimony of other people. How much our be-liefs change may depend on how many people are the sourcesof a given piece of information, and how reliable their expertisemakes them. It is not clear, however, what exactly the effectsof reliability or number of speakers will be when the testimonyhas the form of an indicative conditional. Here, we test the hy-pothesis that learning a conditional amounts to increasing thedegree to which the antecedent of that conditional is relevantfor its consequent. Furthermore, we investigate whether this isaffected by number of speakers and by their expertise.