Self-deception has become one of the most exciting puzzles in the philosophy of mind, and a number of paradoxes encountered by the theory of rational choice invo lve that very same notion. One of the objectives of this conference was to show that bridges can be thrown over the gap between the two traditions, but also that both of them make self-deception too intrapsychic and suffer from a serious individualistic bias. The conference was intended to explore the intersubjective and social dimensions of self-deception.