This book constitutes the thoroughly refereed postproceedings of the 9th International Workshop
on Multi-Agent-based Simulation MABS 2008 held in Estoril Portugal in May 2008. The 16
revised full papers presented have gone through two rounds of reviewing selection and
improvement and were selected from 44 submissions they present state-of-the-art research
results in agent-based simulation and modeling. The papers are organized in topical sections on
simulation of economic behaviour modelling and simulation of social behaviou applications
techniques infrastructure and technologies as well as methods and methodologies.
