Invited Paper -- How Formal Logic Can Fail to Be Useful for Modelling or Designing MAS -- Topic A: Social Theory for Agent Technology -- Communicational Patterns as Basis of Organizational Structures -- On How to Conduct Experimental Research with Self-Motivated Agents -- Cognitive Identity and Social Reflexivity of the Industrial District Firms. Going Beyond the “Complexity Effect” with Agent-Based Simulations -- The MAS-SOC Approach to Multi-agent Based Simulation -- Organisation Modelling for the Dynamics of Complex Biological Processes -- Communication without Agents? From Agent-Oriented to Communication-Oriented Modeling -- Modeling Product Awareness Rates and Market Shares -- Metanarratives and Believable Behavior of Autonomous Agents -- FORM – A Sociologically Founded Framework for Designing Self-Organization of Multiagent Systems -- Social Organization in a Software Agent Community with a Non-zero-Sum Game Interaction Model -- Emotion: Theoretical Investigations and Implications for Artificial Social Aggregates -- Topic B: Norms and Institutions in MAS -- What Is a Normative Goal? -- Searching for a Soulmate – Searching for Tag-Similar Partners Evolves and Supports Specialization in Groups -- Norms and Their Role in a Model of Electronic Institution -- A Model of Normative Multi-agent Systems and Dynamic Relationships -- Integration of Generic Motivations in Social Hybrid Agents.