This book constitutes the thoroughly refereed post-proceedings of the International Workshop on Coordination, Organization, Institutions and Norms in Agent Systems, COIN 2006, held as two events at AAMAS 2006, the 5th International Joint Conference on Autonomous Agents and Multiagent Systems in Hakodate, Japan, and ECAI 2006, the 17th European Conference on Artificial Intelligence in Riva del Garda, Italy.

MODELLING AND ANALYZING ORGANIZATIONS.- Structural Aspects of the Evaluation of Agent Organizations.- Integrating Trust in Virtual Organisations.- Coordinating Tasks in Agent Organizations.- Redesign of Organizations as a Basis for Organizational Change.- MODELLING AND ANALYZING INSTITUTIONS.- Specifying and Reasoning About Multiple Institutions.- Controlling an Interactive Game with a Multi-agent Based Normative Organisational Model.- Ubi Lex, Ibi Poena: Designing Norm Enforcement in E-Institutions.- Specification and Verification of Institutions Through Status Functions.- NORMATIVE MODELS AND ISSUES.- Spatially Distributed Normative Objects.- Informing Regulatory Dynamics in Open MASs.- Operationalisation of Norms for Electronic Institutions.- Norm-Oriented Programming of Electronic Institutions: A Rule-Based Approach.- An Agent-Based Model for Hierarchical Organizations.- Ballroom etiquette: A Case Study for Norm-Governed Multi-Agent Systems.- NORM EVOLUTION AND DYNAMICS.- Towards Self-configuration in Autonomic Electronic Institutions.- Norm Conflicts and Inconsistencies in Virtual Organisations.- Using Dynamic Electronic Institutions to Enable Digital Business Ecosystems.- A Peer-to-Peer Normative System to Achieve Social Order.- AUTONOMY, COORDINATION AND SOCIAL ORDER.- What Is Commitment? Physical, Organizational, and Social (Revised).- Modelling and Monitoring Social Expectations in Multi-agent Systems.- Influence-Based Autonomy Levels in Agent Decision-Making.- Centralized Regulation of Social Exchanges Between Personality-Based Agents.- Cooperative Interactions: An Exchange Values Model.