A call for papers on: The Use of Logic in Agent-Based Social Simulation to be published as a special issue of JASSS - the Journal of Artificial Societies and Social Simulation Deadline for submission: October 31st 2003 Co-edited by Frank Dignum, Bruce Edmonds and Liz Sonenberg Agent-Based Social Simulation (ABSS) stands at the cross-roads between complex social systems and computer science. On one hand, social simulation is an exciting application area for people doing research in agent technology. On the other, agent technology provides interesting new tools for performing social simulations. Modal logic seems to provide a consistent base for single agent behavior there is little or no practical theory on agent interactions. The logics that are used to describe social relations and interactions mainly stem from philosophical logic (e.g. deontic logic for the description of norms), and even these either treat society as a whole or represent only a single individual’s perspective. The question arises whether such abstract logic is of any use in the area of ABSS and, if so, how such formal systems can be usefully applied in ABSS. In this special issue we invite contributions that contribute to our understanding of how logic can be useful in ABSS, or to further analyse the weaknesses of logic for the purposes of ABSS. We also invite contributions that try to bridge the gap between abstract logical formalisms and applications that go beyond toy examples. We would particularly like to receive contributions that demonstrate how a logic or logical formalisation can be useful in realist applications or working simulations. For more details, including submission see: http://cfpm.org/logic-in-abss