This volume is the eighth in the Intelligent Agents series associated with the ATAL workshops. These workshops on "Agent Theories, Architectures, and L- guages" have established themselves as a tradition, and play the role of small but internationally well-known conferences on the subject, where besides theory per se also integration of theory and practice is in focus. Speci?cally, ATAL - dresses issues of theories of agency, software architectures for intelligent agents, methodologies and programming languages for realizing agents, and software tools for applying and evaluating agent-based...